ORCID Profile
0000-0002-4000-2751
Current Organisation
University of Queensland
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Research Topics
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Top 5 Research Topics
ANZSRC Field of Research (FoR)
Nanotechnology | Materials Engineering | Surfaces and Structural Properties of Condensed Matter | Nanomaterials | Materials Engineering Not Elsewhere Classified | Nanofabrication, Growth and Self Assembly | Colloid and Surface Chemistry | Condensed Matter Physics | Functional Materials | Nanoscale Characterisation | Interdisciplinary Engineering Not Elsewhere Classified | Macromolecular and Materials Chemistry | Sensor (Chemical And Bio-) Technology | Chemical Spectroscopy | Biomedical Engineering | Nanobiotechnology | Nanotechnology | Organic Chemical Synthesis | Nanochemistry and Supramolecular Chemistry | Biological Sciences Not Elsewhere Classified | Geology Not Elsewhere Classified | Biomaterials | Physical Chemistry (Incl. Structural) | Supramolecular Chemistry | Condensed Matter Modelling and Density Functional Theory | Chemical Engineering Design | Instrumental Methods (excl. Immunological and Bioassay Methods) | Colloid And Surface Chemistry | Sensor Technology (Chemical aspects) | Powder and Particle Technology | Electroanalytical Chemistry | Characterisation Of Macromolecules | Membrane and Separation Technologies | Materials Engineering not elsewhere classified | Biosensor Technologies | Membrane Biology | Polymers and Plastics | Composite and Hybrid Materials | Exploration Geochemistry | Nanophotonics | Nanomanufacturing | Energy Generation, Conversion and Storage Engineering | Other Biological Sciences | Environmental Nanotechnology | Nanoelectronics | Physical Chemistry of Materials | Geochemistry | Receptors and Membrane Biology | Gene Expression (incl. Microarray and other genome-wide approaches) | Interdisciplinary Engineering | Analytical Chemistry | Organic Chemistry | Separation Science | Crop and Pasture Production | Biotechnology Not Elsewhere Classified | Microbial Ecology | Carbon Sequestration Science | Crop and Pasture Biomass and Bioproducts | Diagnostic Applications | Condensed Matter Imaging | Condensed Matter Characterisation Technique Development
ANZSRC Socio-Economic Objective (SEO)
Expanding Knowledge in the Chemical Sciences | Expanding Knowledge in the Physical Sciences | Chemical sciences | Diagnostic methods | Expanding Knowledge in Technology | Scientific instrumentation | Solar-photoelectric | Expanding Knowledge in Engineering | Management of Greenhouse Gas Emissions from Manufacturing Activities | Integrated circuits and devices | Solar-Photovoltaic Energy | Biological sciences | Earth sciences | Energy Storage (excl. Hydrogen) | Medical instrumentation | Environmentally Sustainable Manufacturing not elsewhere classified | National Security | Mining and Extraction of Titanium Minerals, Zircon, and Rare Earth Metal Ores (e.g. Monazite) | Mining and Extraction of Precious (Noble) Metal Ores | Energy storage | Metals (composites, coatings, bonding, etc.) | Management of Solid Waste from Plant Production | Occupational training | Concentrating Processes of Base Metal Ores (excl. Aluminium and Iron Ores) | Communication equipment not elsewhere classified | Management of Greenhouse Gas Emissions from Energy Activities (excl. Electricity Generation) | Management of Greenhouse Gas Emissions from Electricity Generation | Physical sciences | Other | Other | Clinical health not specific to particular organs, diseases and conditions | Diagnostics | Manufactured products not elsewhere classified | Coated Metal and Metal-Coated Products | Plastics in primary forms | Land and water management | Expanding Knowledge in the Earth Sciences | Precious (Noble) Metal Ore Exploration | Expanding Knowledge in the Biological Sciences |
Related Links
Publications
RF plasma functionalized carbon surfaces for supporting sensor architectures
Publisher: Elsevier BV
Date: 05-2008
A review of metal nanoparticle‐based surface‐enhanced Raman scattering substrates for severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) detection
Publisher: Wiley
Date: 02-04-2023
DOI: 10.1002/AGT2.339
Abstract: Monitoring an infectious disease early using highly sensitive and non‐invasive techniques is critical for human health. Interestingly, the development of surface‐enhanced Raman scattering (SERS) for biological detection ideally fits these medical requirements and is rapidly growing as a powerful diagnostic tool. SERS can enhance the Raman signal of the target molecule by more than 10 6 after the adsorption of the molecule on the plasmonic nanostructured surface. This review provides an overview of the use of gold and silver nanoparticles in SERS substrate designs, followed by the development of these SERS substrates in severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) detection.
Determination of Deterrent Profiles in Nitrocellulose Propellant Grains Using Confocal Raman Microscopy
Publisher: Wiley
Date: 10-2011
Surface morphology of ex situ sulfur-passivated (1×1) and (2×1) InP(100) surfaces
Publisher: American Vacuum Society
Date: 1998
DOI: 10.1116/1.580953
Abstract: Ex situ aqueous (NH4)2S treated sulfur-passivated InP substrates have been studied using ultrahigh vacuum scanning tunnelling microscopy (STM) and low-energy electron diffraction (LEED). The morphology of the passivated surface was imaged after a mild s le annealing. The STM images of a surface exhibiting a good 1×1 LEED pattern show that the top layer of the sulfur-passivated surface is poorly ordered. A surface bilayer atomic step has been observed to be common on sulfur-passivated surfaces. The magnitude of the surface roughness for the passivated surfaces lies between 10 Å and 25 Å this is much smaller than the roughness of InP(100) substrates prepared using previously published methods. After annealing the s le at ∼420 °C, a (2×1) LEED pattern with split half-integer spots has been observed. The associated STM images show that these split half-integer diffraction beams correspond to regularly spaced domains with a width of ∼20–30 Å in the [011̄] direction. The surface roughness increases with annealing temperature the surface corresponding to the best 2×1 LEED symmetry (annealing at ∼420 °C) has a roughness double that of the 1×1 phase.
Protein Electrochemistry Using Aligned Carbon Nanotube Arrays
Publisher: American Chemical Society (ACS)
Date: 07-2003
DOI: 10.1021/JA035722F
Abstract: The remarkable electrocatalytic properties and small size of carbon nanotubes make them ideal for achieving direct electron transfer to proteins, important in understanding their redox properties and in the development of biosensors. Here, we report shortened SWNTs can be aligned normal to an electrode by self-assembly and act as molecular wires to allow electrical communication between the underlying electrode and redox proteins covalently attached to the ends of the SWNTs, in this case, microperoxidase MP-11. The efficiency of the electron transfer through the SWNTs is demonstrated by electrodes modified with tubes cut to different lengths having the same electron-transfer rate constant.
Electrocatalytic Activity of a 2D Phosphorene‐Based Heteroelectrocatalyst for Photoelectrochemical Cells
Publisher: Wiley
Date: 08-02-2018
Abstract: Research into efficient synthesis, fundamental properties, and potential applications of phosphorene is currently the subject of intense investigation. Herein, solution-processed phosphorene or few-layer black phosphorus (FL-BP) sheets are prepared using a microwave exfoliation method and used in photoelectrochemical cells. Based on experimental and theoretical (DFT) studies, the FL-BP sheets are found to act as catalytically active sites and show excellent electrocatalytic activity for triiodide reduction in dye-sensitized solar cells. Importantly, the device fabricated based on the newly designed cobalt sulfide (CoS
Preparation of Hybrid Molybdenum Disulfide/Single Wall Carbon Nanotube–n-Type Silicon Solar Cells
Publisher: MDPI AG
Date: 30-12-2019
DOI: 10.3390/APP10010287
Abstract: Carbon nanotube/silicon (CNT/Si) heterojunction solar cells represent one new architecture for photovoltaic devices. The addition of MoS2 to the devices is shown to increase the efficiency of the devices. Two structures are explored. In one case, the single wall carbon nanotubes (SWCNTs) and MoS2 flakes are mixed to make a hybrid, which is then used to make a film, while in the other case, a two layer system is used with the MoS2 deposited first followed by the SWCNTs. In all cases, the solar cell efficiency is improved largely due to significant increases in the fill factor. The rise in fill factor is due to the semiconducting nature of the MoS2, which helps with the separation of charge carriers.
Comparison of double-walled with single-walled carbon nanotube electrodes by electrochemistry
Publisher: Elsevier BV
Date: 07-2011
Aligned Carbon Nanotube Thin Films from Liquid Crystal Polyelectrolyte Inks
Publisher: American Chemical Society (ACS)
Date: 13-11-2015
Abstract: Single walled carbon nanotube thin films are fabricated by solution shearing from high concentration sodium nanotubide polyelectrolyte inks. The solutions are produced by simple stirring of the nanotubes with elemental sodium in dimethylacetamide, and the nanotubes are thus not subject to any sonication-induced damage. At such elevated concentrations (∼4 mg mL(-1)), the solutions exist in the liquid crystal phase and during deposition this order is transferred to the films, which are well aligned in the direction of shear with a 2D nematic order parameter of ∼0.7 determined by polarized absorption measurements. Compared to similarly formed films made from superacids, the polyelectrolyte films contain smaller bundles and a much narrower distribution of bundle diameters. After p-doping with an organic oxidizer, the films exhibit a very high DC electrical to optical conductivity ratio of σ(DC)/σ(OP) ∼ 35, corresponding to a calculated DC conductivity of over 7000 S cm(-1). When very thin (T550 ∼ 96%), smooth (RMS roughness, R(q) ∼ 2.2 nm), and highly aligned films made via this new route are used as the front electrodes of carbon nanotube-silicon solar cells, the power conversion efficiency is almost an order of magnitude greater than that obtained when using the much rougher (R(q) ∼ 20-30 nm) and less conductive (peak σ(DC)/σ(OP) ∼ 2.5) films formed by common vacuum filtration of the same starting material, and having the same transmittance.
Robust Forests of Vertically Aligned Carbon Nanotubes Chemically Assembled on Carbon Substrates
Publisher: American Chemical Society (ACS)
Date: 29-09-2009
DOI: 10.1021/LA902575W
Abstract: Forests of vertically aligned carbon nanotubes (VACNTs) have been chemically assembled on carbon surfaces. The structures show excellent stability over a wide potential range and are resistant to degradation from sonication in acid, base, and organic solvent. Acid-treated single-walled carbon nanotubes (SWCNTs) were assembled on amine-terminated tether layers covalently attached to pyrolyzed photoresist films. Tether layers were electrografted to the carbon substrate by reduction of the p-aminobenzenediazonium cation and oxidation of ethylenediamine. The amine-modified surfaces were incubated with cut SWCNTs in the presence of N,N'-dicyclohexylcarbodiimide (DCC), giving forests of vertically aligned carbon nanotubes (VACNTs). The SWCNT assemblies were characterized by scanning electron microscopy, atomic force microscopy, and electrochemistry. Under conditions where the tether layers slow electron transfer between solution-based redox probes and the underlying electrode, the assembly of VACNTs on the tether layer dramatically increases the electron-transfer rate at the surface. The grafting procedure, and hence the preparation of VACNTs, is applicable to a wide range of materials including metals and semiconductors.
Tin Oxide Light‐Scattering Layer for Titania Photoanodes in Dye‐Sensitized Solar Cells
Publisher: Wiley
Date: 21-03-2016
Solution processed graphene-silicon Schottky junction solar cells
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5RA03965G
Abstract: Surfactant-assisted exfoliated graphene (SAEG) has been implemented in transparent conducting graphene films which, for the first time, were used to make SAEG–silicon Schottky junctions for photovoltaics.
Optical properties of covalently anchored single-walled carbon nanotube arrays on silicon (100) surfaces
Publisher: SPIE
Date: 27-12-2006
DOI: 10.1117/12.695611
Impedance nanopore biosensor: influence of pore dimensions on biosensing performance
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3AN01933K
Light-conversion phosphor nanoarchitectonics for improved light harvesting in sensitized solar cells
Publisher: Elsevier BV
Date: 06-2021
Self-Assembly of High Density of Triangular Silver Nanoplate Films Promoted by 3-Aminopropyltrimethoxysilane
Publisher: MDPI AG
Date: 30-07-2015
DOI: 10.3390/APP5030209
Copper removal using bio-inspired polydopamine coated natural zeolites
Publisher: Elsevier BV
Date: 05-2014
DOI: 10.1016/J.JHAZMAT.2014.03.048
Abstract: Herein, for the first time, natural clinoptilolite-rich zeolite powders modified with a bio-inspired adhesive, polydopamine (PDA), have been systematically studied as an adsorbent for copper cations (Cu(II)) from aqueous solution. Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS) and thermogravimetric analysis (TGA) revealed successful grafting of PDA onto the zeolite surface. The effects of pH (2-5.5), PDA treatment time (3-24h), contact time (0 to 24h) and initial Cu(II) ion concentrations (1 to 500mgdm(-3)) on the adsorption of Cu(II) ions were studied using atomic absorption spectroscopy (AAS) and neutron activation analysis (NAA). The adsorption behavior was fitted to a Langmuir isotherm and shown to follow a pseudo-second-order reaction model. The maximum adsorption capacities of Cu(II) were shown to be 14.93mgg(-1) for pristine natural zeolite and 28.58mgg(-1) for PDA treated zeolite powders. This impressive 91.4% increase in Cu(II) ion adsorption capacity is attributed to the chelating ability of the PDA on the zeolite surface. Furthermore studies of recyclability using NAA showed that over 50% of the adsorbed copper could be removed in mild concentrations (0.01M or 0.1M) of either acid or base.
Ultrafine ferroferric oxide nanoparticles embedded into mesoporous carbon nanotubes for lithium ion batteries
Publisher: Springer Science and Business Media LLC
Date: 03-12-2015
DOI: 10.1038/SREP17553
Abstract: An effective one-pot hydrothermal method for in situ filling of multi-wall carbon nanotubes (CNT, diameter of 20–40 nm, length of 30–100 μm) with ultrafine ferroferric oxide (Fe 3 O 4 ) nanoparticles (8–10 nm) has been demonstrated. The synthesized Fe 3 O 4 @CNT exhibited a mesoporous texture with a specific surface area of 109.4 m 2 g −1 . The loading of CNT, in terms of the weight ratio of Fe 3 O 4 nanoparticles, can reach as high as 66.5 wt%. Compared to the conventional method of using a Al 2 O 3 membrane as template to fill CNT with iron oxides nanoparticles, our strategy is facile, effective, low cost and easy to scale up to large scale production (~1.42 g per one-pot). When evaluated for lithium storage at 1.0 C (1 C = 928 mA g −1 ), the mesoporous Fe 3 O 4 @CNT can retain at 358.9 mAh g −1 after 60 cycles. Even when cycled at high rate of 20 C, high capacity of 275.2 mAh g −1 could still be achieved. At high rate (10 C) and long life cycling (500 cycles), the cells still exhibit a good capacity of 137.5 mAhg −1 .
Characterization of impedance biosensing performance of single and nanopore arrays of anodic porous alumina fabricated by focused ion beam (FIB) milling
Publisher: Elsevier BV
Date: 09-2014
Carbon nanotubes initiate the explosion of porous silicon
Publisher: Elsevier BV
Date: 11-2010
Benzene carboxylic acid derivatized graphene oxide nanosheets on natural zeolites as effective adsorbents for cationic dye removal
Publisher: Elsevier BV
Date: 09-2013
DOI: 10.1016/J.JHAZMAT.2013.05.041
Abstract: Graphene oxide (GO) nanosheets were grafted to acid-treated natural clinoptilolite-rich zeolite powders followed by a coupling reaction with a diazonium salt (4-carboxybenzenediazoniumtetrafluoroborate) to the GO surface. Raman spectroscopy, Fourier transform infrared (FTIR) spectroscopy, and thermogravimetric analysis (TGA) revealed successful grafting of GO nanosheets onto the zeolite surface. The application of the adsorbents for the adsorption of rhodamine B from aqueous solutions was then demonstrated. After reaching adsorption equilibrium the maximum adsorption capacities were shown to be 50.25, 55.56 and 67.56 mg g(-1) for pristine natural zeolite, GO grafted zeolite (GO-zeolite) and benzene carboxylic acid derivatized GO-zeolite powders, respectively. The adsorption behavior was fitted to a Langmuir isotherm and shown to follow a pseudo-second-order reaction model. Further, a relationship between surface functional groups, pH and adsorption efficiency was established. Results indicate that benzene carboxylic acid derivatized GO-zeolite powders are environmentally favorable adsorbents for the removal of cationic dyes from aqueous solutions.
Impedance spectroscopy study of nanopore arrays for biosensing applications
Publisher: American Scientific Publishers
Date: 07-2014
Electron transfer through α-peptides attached to vertically aligned carbon nanotube arrays: a mechanistic transition
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2CC16665H
Abstract: The mechanism of electron transfer in α-aminoisobutyric (Aib) homoligomers is defined by the extent of secondary structure, rather than just chain length. Helical structures (Aib units ≥3) undergo an electron hopping mechanism, while shorter disordered sequences (Aib units <3) undergo an electron superexchange mechanism.
Synthesis, purification, properties and characterization of sorted single-walled carbon nanotubes.
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8NR07379A
Abstract: Single-walled carbon nanotubes (SWCNTs) have attracted significant attention due to their outstanding mechanical, chemical and optoelectronic properties, which makes them promising candidates for use in a wide range of applications. However, as-produced SWCNTs have a wide distribution of various chiral species with different properties (i.e. electronic structures). In order to take full advantage of SWCNT properties, highly purified and well-separated SWCNTs are of great importance. Recent advances have focused on developing new strategies to effectively separate nanotubes into single-chirality and/or semiconducting/metallic species and integrating them into different applications. This review highlights recent progress in this cutting-edge research area alongside the enormous development of their identification and structural characterization techniques. A comprehensive review of advances in both controlled synthesis and post-synthesis separation methods of SWCNTs are presented. The relationship between the unique structure of SWCNTs and their intrinsic properties is also discussed. Finally, important future directions for the development of sorting and purification protocols for SWCNTs are provided.
Chemically Grafted Carbon Nanotube Surface Coverage Gradients
Publisher: American Chemical Society (ACS)
Date: 26-10-2010
DOI: 10.1021/LA103497F
Abstract: Two approaches to producing gradients of vertically aligned single-walled carbon nanotubes (SWCNTs) on silicon surfaces by chemical grafting are presented here. The first approach involves the use of a porous silicon (pSi) substrate featuring a pore size gradient, which is functionalized with 3-aminopropyltriethoxysilane (APTES). Carboxylated SWCNTs are then immobilized on the topography gradient via carbodiimide coupling. Our results show that as the pSi pore size and porosity increase across the substrate the SWCNT coverage decreases concurrently. In contrast, the second gradient is an amine-functionality gradient produced by means of vapor-phase diffusion of APTES from a reservoir onto a silicon wafer where APTES attachment changes as a function of distance from the APTES reservoir. Carboxylated SWCNTs are then immobilized via carbodiimide coupling to the amine-terminated silicon gradient. Our observations confirm that with decreasing APTES density on the surface the coverage of the attached SWCNTs also decreases. These gradient platforms pave the way for the time-efficient optimization of SWCNT coverage for applications ranging from field emission to water filtration to drug delivery.
Human bone material characterization
Publisher: Springer Science and Business Media LLC
Date: 22-06-2012
DOI: 10.1007/S00198-011-1688-9
Abstract: The interrelation of calcium and phosphorus was evaluated as a function of bone material quality in femoral heads from male fragility fracture patients via surface analytical imaging as well as scanning microscopy techniques. A link between fragility fractures and increased calcium to phosphorus ratio was observed despite normal mineralization density distribution. Bone fragility in men has been recently recognized as a public health issue, but little attention has been devoted to bone material quality and the possible efficacy in fracture risk prevention. Clinical routine fracture risk estimations do not consider the quality of the mineralized matrix and the critical role played by the different chemical components that are present. This study uses a combination of different imaging and analytical techniques to gain insights into both the spatial distribution and the relationship of phosphorus and calcium in bone. X-ray photoelectron spectroscopy and time-of-flight secondary ion mass spectrometry imaging techniques were used to investigate the relationship between calcium and phosphorus in un-embedded human femoral head specimens from fragility fracture patients and non-fracture age-matched controls. The inclusion of the bone mineral density distribution via backscattered scanning electron microscopy provides information about the mineralization status between the groups. A link between fragility fracture and increased calcium and decreased phosphorus in the femoral head was observed despite normal mineralization density distribution. Results exhibited significantly increased calcium to phosphorus ratio in the fragility fracture group, whereas the non-fracture control group ratio was in agreement with the literature value of 1.66 M ratio in mature bone. Our results highlight the potential importance of the relationship between calcium and phosphorus, especially in areas of new bone formation, when estimating fracture risk of the femoral head. The determination of calcium and phosphorus fractions in bone mineral density measurements may hold the key to better fracture risk assessment as well as more targeted therapies.
A Predictive Model for Monolayer-Selective Metal-Mediated MoS2 Exfoliation Incorporating Electrostatics
Publisher: Wiley
Date: 30-10-2023
Superparamagnetic Fe3O4-PEG2K-FA@Ce6 Nanoprobes for in Vivo Dual-mode Imaging and Targeted Photodynamic Therapy
Publisher: Springer Science and Business Media LLC
Date: 08-11-2016
DOI: 10.1038/SREP36187
Abstract: The development of targeted nanoprobes is a promising approach to cancer diagnostics and therapy. In the present work, a novel multifunctional photo/magnet-diagnostic nanoprobe (MNPs-PEG 2K -FA@Ce6) has been developed. This nanoprobe is built using folic acid (FA), bifunctional polyethylene glycol (PEG 2K ) and photosensitizer chlorin e6 (Ce6). The MNPs-PEG 2K -FA@Ce6 nanoprobes are superparamagnetic, can be synthesized on a large scale by a one-pot hydrothermal process without further surface modification and are stable in an aqueous environment for eight months. Compared with free Ce6 nanoprobes in vitro studies, the MNPs-PEG 2K -FA@Ce6 nanoprobes significantly enhance cellular uptake efficiency and promote the effectiveness of photodynamic therapy (PDT) with the assistance of 633 nm laser irradiation. The unique nanoprobes show superior penetration and a retention time of more than six days with less accumulation in the liver allowing highly effective tumor recognition and monitoring. Additionally, there was little damage to healthy organs or tissues. These exciting new nanoprobes could be potential building blocks to develop new clinical therapies and translational medicine.
Improved Application of Carbon Nanotube Atomic Force Microscopy Probes Using PeakForce Tapping Mode
Publisher: MDPI AG
Date: 09-10-2018
DOI: 10.3390/NANO8100807
Abstract: In this work PeakForce tapping (PFT) imaging was demonstrated with carbon nanotube atomic force microscopy (CNT-AFM) probes this imaging mode shows great promise for providing simple, stable imaging with CNT-AFM probes, which can be difficult to apply. The PFT mode is used with CNT-AFM probes to demonstrate high resolution imaging on s les with features in the nanometre range, including a Nioprobe calibration s le and gold nanoparticles on silicon, in order to demonstrate the modes imaging effectiveness, and to also aid in determining the diameter of very thin CNT-AFM probes. In addition to stable operation, the PFT mode is shown to eliminate “ringing” artefacts that often affect CNT-AFM probes in tapping mode near steep vertical step edges. This will allow for the characterization of high aspect ratio structures using CNT-AFM probes, an exercise which has previously been challenging with the standard tapping mode.
Integrative Genome-Scale DNA Methylation Analysis of a Large and Unselected Cohort Reveals 5 Distinct Subtypes of Colorectal Adenocarcinomas
Publisher: Elsevier BV
Date: 2019
Efficient and Fast Synthesis of Few‐Layer Black Phosphorus via Microwave‐Assisted Liquid‐Phase Exfoliation
Publisher: Wiley
Date: 08-11-2017
Accurate thickness measurement of graphene
Publisher: IOP Publishing
Date: 19-02-2016
DOI: 10.1088/0957-4484/27/12/125704
Abstract: Graphene has emerged as a material with a vast variety of applications. The electronic, optical and mechanical properties of graphene are strongly influenced by the number of layers present in a s le. As a result, the dimensional characterization of graphene films is crucial, especially with the continued development of new synthesis methods and applications. A number of techniques exist to determine the thickness of graphene films including optical contrast, Raman scattering and scanning probe microscopy techniques. Atomic force microscopy (AFM), in particular, is used extensively since it provides three-dimensional images that enable the measurement of the lateral dimensions of graphene films as well as the thickness, and by extension the number of layers present. However, in the literature AFM has proven to be inaccurate with a wide range of measured values for single layer graphene thickness reported (between 0.4 and 1.7 nm). This discrepancy has been attributed to tip-surface interactions, image feedback settings and surface chemistry. In this work, we use standard and carbon nanotube modified AFM probes and a relatively new AFM imaging mode known as PeakForce tapping mode to establish a protocol that will allow users to accurately determine the thickness of graphene films. In particular, the error in measuring the first layer is reduced from 0.1-1.3 nm to 0.1-0.3 nm. Furthermore, in the process we establish that the graphene-substrate adsorbate layer and imaging force, in particular the pressure the tip exerts on the surface, are crucial components in the accurate measurement of graphene using AFM. These findings can be applied to other 2D materials.
Comparison of carbon nanotube modified electrodes for photovoltaic devices
Publisher: Elsevier BV
Date: 06-2012
Preparation and characterization of multiwalled carbon nanotube (MWCNT)/polymer nanostructured materials
Publisher: SPIE
Date: 26-12-2008
DOI: 10.1117/12.810958
Self-ordering electrochemistry: A simple approach for engineering nanopore and nanotube arrays for emerging applications
Publisher: CSIRO Publishing
Date: 2011
DOI: 10.1071/CH10398
Abstract: In this paper, we present recent work from our group focussed on the fabrication of nanopore and nanotube arrays using self-ordered electrochemistry, and their application in several key areas including template synthesis, molecular separation, optical sensing, and drug delivery. We have fabricated nanoporous anodic aluminium oxide (AAO) with controlled pore dimensions (20–200 nm) and shapes, and used them as templates for the preparation of gold nanorod/nanotube arrays and gold nanotube membranes with characteristic properties such as surface enhanced Raman scattering and selective molecular transport. The application of AAO nanopores as a sensing platform for reflective interferometric detection is demonstrated. Finally, a drug release study on fabricated titania nanotubes confirms their potential for implantable drug delivery applications.
In vivo high-efficiency targeted photodynamic therapy of ultra-small Fe3O4@polymer-NPO/PEG-Glc@Ce6 nanoprobes based on small size effect
Publisher: Springer Science and Business Media LLC
Date: 05-2017
DOI: 10.1038/AM.2017.68
A method for production of cheap, reliable Pt–Ir tips
Publisher: AIP Publishing
Date: 04-2000
DOI: 10.1063/1.1150523
Abstract: A new method of producing Pt–Ir tips for use in scanning tunneling microscopy is described. This reproducible method is simple, cheap, fast, and avoids the use of hazardous chemicals common in many other methods. Scanning electron microscopy, time of flight–secondary ion mass spectroscopy, and x-ray photoelectron spectroscopy have been applied to understand both the chemical and morphological changes that occur as a result of the etching. The method has been demonstrated on both stock Pt–Ir wire and commercial tips and has been found to dramatically enhance image quality. It is also reusable on the same tip extending the lifetime of a single tip indefinitely.
Highly adhesive and disposable inorganic barrier films: made from 2D silicate nanosheets and water
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D1TA08837H
Abstract: A gas barrier film with moderate permeance due to capillary flow and high adhesion was made from only water and layered aluminosilicates. Interestingly, gas permeability decreased with increasing humidity. This film preserved the freshness of apples.
Sulfur-Doped Graphene with Iron Pyrite (FeS2 ) as an Efficient and Stable Electrocatalyst for the Iodine Reduction Reaction in Dye-Sensitized Solar Cells
Publisher: Wiley
Date: 09-03-2017
Matrix metalloproteinase-2-targeted superparamagnetic Fe3O4-PEG-G5-MMP2@Ce6 nanoprobes for dual-mode imaging and photodynamic therapy
Publisher: No publisher found
Date: 2019
DOI: 10.1039/C9NR06774D
Abstract: This work explored the application of matrix metalloproteinase 2-targeted superparamagnetic nanoprobes for magnetic resonance imaging (MRI), near infrared (NIR) fluorescence imaging and photodynamic therapy of tumors. PEG, PAMAM (G5) and matrix metalloproteinase 2 (MMP2) were attached to the surface of carboxylated Fe3O4 nanoparticles (NPs) using a chemical coupling method and then finally loaded with the photosensitizer chlorin e6 (Ce6). In vitro and in vivo experiments demonstrated that the Fe3O4-PEG-G5-MMP2@Ce6 nanoprobes exhibited excellent stability, precise tumor targeting and biocompatibility. Furthermore, the fluorescence properties of Fe3O4-PEG-G5-MMP2@Ce6 nanoprobes were analogous to Ce6 and could be employed for fluorescence imaging. Meanwhile, the Fe3O4-PEG-G5-MMP2@Ce6 nanoprobes have also been shown to be effective as contrast agents for T2-weighted MRI. The target molecule MMP2 enhanced the tumor targeting ability of Fe3O4-PEG-G5-MMP2@Ce6 nanoprobes. Additionally, the Fe3O4-PEG-G5-MMP2@Ce6 nanoprobes significantly inhibited tumor growth compared with PBS and free Ce6. This work will inspire greater enthusiasm for the construction of multifunctional magnetic nanoplatforms for biomedical applications.
Microbial cell lysis and nucleic acid extraction via nanofluidic channel
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5RA01336D
Abstract: This paper presents a microfluidic device with a nano-channel prepared by focused ion beam (FIB) milling for microbial cell lysis and nucleic acid extraction.
Measurement of functionalised carbon nanotube carboxylic acid groups using a simple chemical process
Publisher: Elsevier BV
Date: 06-2006
Surfactant Concentration Dependent Spectral Effects of Oxygen and Depletion Interactions in Sodium Dodecyl Sulfate Dispersions of Carbon Nanotubes
Publisher: American Chemical Society (ACS)
Date: 02-06-2014
DOI: 10.1021/JP501230J
Abstract: Quenching of optical absorbance spectra for carbon nanotubes (CNTs) dispersed in sodium dodecyl sulfate (SDS) has been observed to be more pronounced at higher concentrations of the surfactant. The protonation-based quenching behavior displays wavelength dependence, affecting larger diameter nanotube species preferentially. Although absorbance may be recovered by hydroxide addition, pH measurements suggest that hydrolysis of SDS does not play a major role in the short term quenching behavior at high SDS concentrations. The degree of quenching is observed to correlate well with an increase in attractive depletion as SDS concentration is increased, while the extent of depletion is found to depend heavily on the concentration of preparation in comparison to the final SDS concentration. Attractive depletion in SDS is also found to be preferential for CNTs of larger diameter. It is proposed that depletion enhances the quenching effect due to close association of CNT-SDS complexes providing higher SDS densities on the CNT surface, leading to further oxidation. In addition, the quenching behavior in SDS is found to strongly suppress the optical and Raman signal from metallic nanotube species even at high pH. Displacement of SDS by sodium deoxycholate as a secondary surfactant is able to reverse the effects of protonation of metallic species, whereas hydroxide addition is only partially effective.
Micropatterned arrays of porous silicon: Toward sensory biointerfaces
Publisher: American Chemical Society (ACS)
Date: 23-06-2011
DOI: 10.1021/AM2003526
Cryogenic cleavage used in gold substrate production
Publisher: American Vacuum Society
Date: 11-2002
DOI: 10.1116/1.1518968
Abstract: An improved method for the production of ultralarge flat and patterned gold surfaces for use in scanning probe studies using a procedure based on epitaxial gold growth on mica is described. The approach is superior in terms of simplicity and reliability without any loss of substrate quality. The gold surface is glued onto an aluminum stub with two part ceramic or polyester glue. The mica is removed by immersing the s le in liquid nitrogen. The liquid nitrogen causes differential contraction of the mica and gold resulting in clean separation to leave large atomically flat planes or patterned features.
Raman studies of the phase transition in KClO3
Publisher: Elsevier BV
Date: 1989
Electrochemistry and Photocurrent Response from Vertically-Aligned Chemically-Functionalized Single-Walled Carbon Nanotube Arrays
Publisher: The Electrochemical Society
Date: 2011
DOI: 10.1149/1.3527057
Increased redox-active peptide loading on carbon nanotube electrodes
Publisher: Elsevier BV
Date: 02-2013
Discontinuous Dewetting, Template-Guided Self-Assembly, and Liquid Bridge-Transfer Printing of High-Resolution Single-Walled Carbon Nanotube Lines for Next-Generation Electrodes and Interconnects
Publisher: American Chemical Society (ACS)
Date: 13-07-2020
Electrochemically prepared nanoporous gold as a SERS substrate with high enhancement
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4RA01909A
Abstract: Gold films were electrochemically etched into nanoporous substrates with tuneable pore sizes down to approximately 2 nm. The SERS enhancement as a result of changes in valley and ligament widths of the nanoporous gold was investigated. Compared to the conventional de-alloyed nano-gold, the etched gold showed a lower limit of detection (2 × 10 −9 M vs. 1 × 10 −7 M Rhodamine 6G).
Ambient air synthesis of multi-layer CVD graphene films for low-cost, efficient counter electrode material in dye-sensitized solar cells
Publisher: Elsevier BV
Date: 03-2018
Electrochemical Detection of Copper Using a Gly-Gly-His Modified Carbon Nanotube Biosensor
Publisher: Springer Science and Business Media LLC
Date: 12-04-2011
Increased performance of single walled carbon nanotube photovoltaic cells through the addition of dibenzo[b,def]chrysene derivative
Publisher: Elsevier BV
Date: 05-2012
Scanning tunnelling microscopy imaging of [3 x 3] Mn nonanuclear grids
Publisher: Wiley
Date: 11-2003
Patterned attachment of carbon nanotubes to silane modified silicon
Publisher: Elsevier BV
Date: 11-2007
Poly(thiourea triethylene glycol) as a multifunctional binder for enhanced performance in lithium-sulfur batteries
Publisher: Elsevier BV
Date: 12-2022
Direct attachment of well-aligned single-walled carbon nanotube architectures to silicon (100) surfaces: a simple approach for device assembly
Publisher: Royal Society of Chemistry (RSC)
Date: 2007
DOI: 10.1039/B615096A
Abstract: A new approach for the attachment of vertically-aligned shortened carbon nanotube architectures to a silicon (100) substrate by chemical anchoring directly to the surface has been demonstrated for the first time. The ordered assembly of single-walled carbon nanotubes (SWCNTs) was accomplished by hydroxylating the silicon surface followed by a condensation reaction with carboxylic acid functionalised SWCNTs. This new nanostructure has been characterised by X-ray photoelectron, Raman and Fourier transform infrared (FTIR) spectroscopy as well as scanning electron and atomic force microscopy. The assembly behaviour of SWCNTs onto the silicon surface shows a fast initial step producing isolated functionalised carbon nanotubes or nanotube bundles anchored to the silicon surface followed by a slower step where the adsorbed nanotubes grow into larger aggregates via van der Waals interactions between adsorbed and solvated nanotubes. The electrochemical and optical properties of the SWCNTs directly attached to silicon have also been investigated. These new nanostructures are excellent electrochemical electrodes. They also fluoresce in the wavelength range 650-800 nm. The successful attachment of the SWCNTs directly to silicon provides a simple, new avenue for fabrication and development of silicon-based nanoelectronic, nano-optoelectronic and sensing devices. Compared to existing techniques, this new approach has several advantages including low operating temperature, low cost and the possibility of further modification.
Supramolecular construction of vesicles based on core-substituted naphthalene diimide appended with triethyleneglycol motifs
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C1CC11318F
Gold nanotube membranes have catalytic properties
Publisher: Elsevier BV
Date: 05-2012
Spatially isolated redox processes enabled by ambipolar charge transport in multi-walled carbon nanotube mats
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D0MH01967D
Abstract: Ambipolar MWCNTs are shown to transport charge from a spontaneous reaction to drive a spatially isolated redox reaction, maintaining charge neutrality without a salt bridge. This mechanism enables the study of spatially isolated redox couples.
Observation of the oxidation of galena using Raman spectroscopy
Publisher: Elsevier BV
Date: 12-2000
Preparation and characterisation of vertically aligned single-walled carbon nanotube arrays on porous silicon
Publisher: SPIE
Date: 26-12-2008
DOI: 10.1117/12.811472
Effect of Nanotube Film Thickness on the Performance of Nanotube-Silicon Hybrid Solar Cells
Publisher: MDPI AG
Date: 17-12-2013
DOI: 10.3390/NANO3040655
Carbon Nanotubes Anchored to Silicon for Device Fabrication
Publisher: Wiley
Date: 02-02-2010
Abstract: This report highlights recent progress in the fabrication of vertically aligned carbon nanotubes (VA-CNTs) on silicon-based materials. Research into these nanostructured composite materials is spurred by the importance of silicon as a basis for most current devices and the disruptive properties of CNTs. Various CNT attachments methods of covalent and adsorptive nature are critically compared. Selected ex les of device applications where the VA-CNT on silicon assemblies are showing particular promise are discussed. These applications include field emitters, filtration membranes, dry adhesives, sensors and scaffolds for biointerfaces.
Single-walled carbon nanotube/polyaniline/n-silicon solar cells: Fabrication, characterization, and performance measurements
Publisher: Wiley
Date: 15-01-2013
Abstract: Carbon nanotube-silicon solar cells are a recently investigated photovoltaic architecture with demonstrated high efficiencies. Silicon solar-cell devices fabricated with a thin film of conductive polymer (polyaniline) have been reported, but these devices can suffer from poor performance due to the limited lateral current-carrying capacity of thin polymer films. Herein, hybrid solar-cell devices of a thin film of polyaniline deposited on silicon and covered by a single-walled carbon nanotube film are fabricated and characterized. These hybrid devices combine the conformal coverage given by the polymer and the excellent electrical properties of single-walled carbon nanotube films and significantly outperform either of their component counterparts. Treatment of the silicon base and carbon nanotubes with hydrofluoric acid and a strong oxidizer (thionyl chloride) leads to a significant improvement in performance.
Ab initio study of benzene adsorption on the Cu(110) surface and simulation of STM images
Publisher: Elsevier BV
Date: 2004
Photocurrent response from vertically aligned single-walled carbon nanotube arrays
Publisher: IEEE
Date: 02-2010
A microarray platform for the creation of a matrix of site-specific transformed cells
Publisher: SPIE
Date: 11-2002
DOI: 10.1117/12.468658
Sulfur-Functionalized Titanium Carbide Ti3C2TX (MXene) Nanosheets Modified Light Absorbers for Ambient Fabrication of Sb2S3 Solar Cells
Publisher: American Chemical Society (ACS)
Date: 05-07-2022
Designing Functionalized Porphyrins Capable of Pseudo-2D Self-Assembly on Surfaces
Publisher: American Chemical Society (ACS)
Date: 17-06-2008
DOI: 10.1021/OL800895Q
Abstract: A crystallography-instructed strategy to highly ordered layering of porphyrins with different topologies on HOPG is developed based on meso-tetraarylporphyrins bearing 2-ethoxyethanol side chains as "sticky ends". These sticky ends are capable of displaying directive hydrogen bonding motifs with the inherent D4h symmetry of the porphyrins. Solvent effects are shown to have an important role in fabricating the adsorption. Metalation and subsequent axial ligation was a key controlling factor in the topology of the layer, leading to pseudo-2D structures on HOPG.
Black Phosphorus: Synthesis and Application for Solar Cells
Publisher: Wiley
Date: 11-10-2017
Dual silane surface functionalization for the selective attachment of human neuronal cells to porous silicon
Publisher: American Chemical Society (ACS)
Date: 07-2011
DOI: 10.1021/LA201760W
Carbon nanotube modified probes for stable and high sensitivity conductive atomic force microscopy
Publisher: IOP Publishing
Date: 26-10-2016
DOI: 10.1088/0957-4484/27/47/475708
Abstract: Conductive atomic force microscopy (C-AFM) is used to characterise the nanoscale electrical properties of many conducting and semiconducting materials. We investigate the effect of single walled carbon nanotube (SWCNT) modification of commercial Pt/Ir cantilevers on the sensitivity and image stability during C-AFM imaging. Pt/Ir cantilevers were modified with small bundles of SWCNTs via a manual attachment procedure and secured with a conductive platinum pad. AFM images of topography and current were collected from heterogeneous polymer and nanomaterial s les using both standard and SWCNT modified cantilevers. Typically, achieving a good current image comes at the cost of reduced feedback stability. In part, this is due to electrostatic interaction and increased tip wear upon applying a bias between the tip and the s le. The SWCNT modified tips displayed superior current sensitivity and feedback stability which, combined with superior wear resistance of SWCNTs, is a significant advancement for C-AFM.
Tensile behaviour of individual fibre bundles in the human lumbar anulus fibrosus
Publisher: Elsevier BV
Date: 2018
DOI: 10.1016/J.JBIOMECH.2017.11.016
Abstract: Disc degeneration is a common medical affliction whose origins are not fully understood. An improved understanding of its underlying mechanisms could lead to the development of more effective treatments. The aim of this paper was to investigate the effect of (1) degeneration, (2) circumferential region and (3) strain rate on the microscale mechanical properties (toe region modulus, linear modulus, extensibility, phase angle) of in idual fibre bundles in the anulus fibrosus lamellae of the human intervertebral disc. Healthy and degenerate fibre bundles excised from different circumferential regions in the outer anulus (posterolateral, lateral, anterolateral, anterior) were tensile tested at slow (0.1%/s), medium (1%/s) and fast (10%/s) strain rates using a micromechanical testing system. Our preliminary results showed that neither degeneration nor circumferential region significantly affected the fibre bundles' mechanical behaviour. However, when the fibre bundles were tested at higher strain rates, this resulted in significantly higher linear moduli and lower phase angles. These findings, compared with data from other studies investigating single and multiple lamellae sections, suggest that degeneration has minimal effect on outer anulus mechanics irrespective of structural level, and the inter- and intra-lamellar arrangement and continuity of the fibre bundles may influence the lamellae's regional behaviour and viscoelasticity.
Surface oxidized two-dimensional antimonene nanosheets for electrochemical ammonia synthesis under ambient conditions
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/C9TA13485A
Abstract: Few-layer antimonene nanosheets with surface oxidation have been used as an efficient nitrogen reduction reaction electrocatalyst for ammonia synthesis.
Ultraviolet photodissociation dynamics of carbon suboxide
Publisher: Elsevier BV
Date: 02-1989
Interaction of Silver Nanoparticles with Tethered Bilayer Lipid Membranes
Publisher: American Chemical Society (ACS)
Date: 19-05-2015
DOI: 10.1021/ACS.LANGMUIR.5B00586
Abstract: Silver nanoparticles are well-known for their antibacterial properties. However, the detailed mechanism describing the interaction between the nanoparticles and a cell membrane is not fully understood, which can impede the use of the particles in biomedical applications. Here, a tethered bilayer lipid membrane has been used as a model system to mimic a natural membrane and to study the effect of exposure to small silver nanoparticles with diameters of about 2 nm. The solid supported membrane architecture allowed for the application of surface analytical techniques such as electrochemical impedance spectroscopy and atomic force microscopy. Exposure of the membrane to solutions of the silver nanoparticles led to a small but completely reversible perturbation of the lipid bilayer.
Field emission from single-, double-, and multi-walled carbon nanotubes chemically attached to silicon
Publisher: AIP Publishing
Date: 15-02-2012
DOI: 10.1063/1.3687363
Abstract: The chemical attachment and field emission (FE) properties of single-walled carbon nanotubes (SWCNTs), double-walled carbon nanotubes (DWCNTs), and multi-walled carbon nanotubes (MWCNTs) chemically attached to a silicon substrate have been investigated. A high density of CNTs was revealed by atomic force microscopy imaging with orientation varying with CNT type. Raman spectroscopy was used to confirm the CNT type and diameter on the surfaces. The field emission properties of the surfaces were studied and both current-voltage and Fowler-Nordheim plots were obtained. The SWCNTs exhibited superior FE characteristics with a turn-on voltage (Eto) of 1.28 V μm−1 and electric field enhancement factor (β) of 5587. The DWCNT surface showed an Eto of 1.91 V μm−1 and a β of 4748, whereas the MWCNT surface exhibited an Eto of 2.79 V μm−1 and a β of 3069. The emission stability of each CNT type was investigated and it was found that SWCNTs produced the most stable emission. The differences between the FE characteristics and stability are explained in terms of the CNT diameter, vertical alignment, and crystallinity. The findings suggest that strength of substrate adhesion and CNT crystallinity play a major role in FE stability. Comparisons to other FE studies are made and the potential for device application is discussed.
Mixed assembly of ferrocene/porphyrin onto carbon nanotube arrays towards multibit information storage
Publisher: IEEE
Date: 02-2008
Characterisation of chlorpromazine binding to lipid bilayer membranes
Publisher: IEEE
Date: 2006
Implementation of antireflection layers for improved efficiency of carbon nanotube–silicon heterojunction solar cells
Publisher: Elsevier BV
Date: 08-2015
Single walled carbon nanotube network electrodes for dye solar cells
Publisher: Elsevier BV
Date: 10-2010
Silver nanostar films for surface-enhanced Raman spectroscopy (SERS) of the pesticide imidacloprid
Publisher: Elsevier BV
Date: 03-2023
Application of Polymer Interlayers in Silicon–Carbon Nanotube Heterojunction Solar Cells
Publisher: Wiley
Date: 27-02-2015
Concentration dependence in microcontact printing of self-assembled monolayers (SAMs) of alkanethiols
Publisher: Elsevier BV
Date: 12-2001
Solution Based Methods for the Fabrication of Carbon Nanotube Modified Atomic Force Microscopy Probes
Publisher: MDPI AG
Date: 25-10-2017
DOI: 10.3390/NANO7110346
Photodissociation of nitrogen dioxide adsorbed on lithium fluoride (001)
Publisher: American Chemical Society (ACS)
Date: 12-1992
DOI: 10.1021/J100205A070
High resolution chemical mapping of biomimetic membranes by force volume imaging
Publisher: IEEE
Date: 02-2008
Vortex Fluidics Improved Morphology of CH3NH3PbI3‐xClx Films for Perovskite Solar Cells
Publisher: Wiley
Date: 10-01-2017
Broadening of van hove singularities measured by photoemission spectroscopy of single- And mixed-chirality single-walled carbon nanotubes
Publisher: American Chemical Society (ACS)
Date: 02-10-2019
Adsorption and Desorption of Single-Stranded DNA from Single-Walled Carbon Nanotubes
Publisher: Wiley
Date: 12-05-2017
Abstract: The chemical affinity of single-stranded DNA (ssDNA) to adsorb to the surface of single-walled carbon nanotubes (SWCNTs) is used for SWCNT purification, separation and in bio-devices. Despite the popularity of research on SWCNT-ssDNA conjugates, very little work has studied the removal of adsorbed ssDNA on SWCNTs. This paper reports a comprehensive study of biological, physical and chemical treatments for the removal of ssDNA from SWCNT-ssDNA suspensions. These include enzymatic cleavage, heat treatment under vacuum up to 400 °C, chemical treatments with high or low pH, oxidizing conditions, and high-ionic-strength solvents. Complimentary characterization techniques including fluorescence from a DNA-intercalating dye (YO-PRO-1) and photoelectron spectroscopy are used to exhaustively study and compare the methods investigated. Enzyme treatment is found to remove the phosphate backbone only, leaving nucleosides adsorbed to SWCNTs. Heating in inert atmosphere is ineffective at removing ssDNA. Acid, base and oxidative treatment are found to be effective for the removal of ssDNA from SWCNTs. Where possible the mechanism of desorption is described and from the findings suggestions for "best practices" are provided.
Scanning probe microscopy characterization of immobilized enzyme molecules on a biosensor surface: Visualisation of individual molecules
Publisher: National Library of Serbia
Date: 2004
DOI: 10.2298/JSC0402093L
Abstract: Scanning probe microscopy techniques were used to study immobilized enzyme molecules of glucose oxidase (GOD) on a biosensor surface. The study was carried out in order to optimize atomic force microscopy (AFM) imaging and reveal themolecular resolution of in idual GOD molecules. Chemically modified AFM tips and the light tapping mode were found to be the optimal conditions for imaging soft biomolecules such as GOD. The information obtained from the AFM images included spatial distribution and organization of the enzyme molecules on the surface, surface coverage and shape, size and orientation of in idual molecules. Two typical shapes of GOD molecules were found, spherical and butterfly, which are in accordance with the shapes obtained from scanning tunnelling microscopy (STM) images. Using a model of the orientation of the GOD molecules on the surface, these shapes are assigned to the enzyme standing and lying on the surface. After AFM tip deconvolution, the size of the spherical shaped GOD molecules was found to be 12 ?2.1 nm in diameter, whereas the butterfly shapes were 16.5 ? 3.3 nm x10.2 ? 2.5 nm. Corresponding STM images showed smaller lateral dimensions of 10 _1nm_ 6 ?1nm and 6.5 ? 1 nm x5 ? 1 nm. The disagreement between these two techniques is attributed to the deformation of the GOD molecules caused by the tapping process.
Nanotube film metallicity and its effect on the performance of carbon nanotube–silicon solar cells
Publisher: Wiley
Date: 04-1973
Interaction of water with stepped Ni(760): associative versus dissociative adsorption and autocatalytic decomposition
Publisher: Elsevier BV
Date: 06-1996
The Role of Nanotubes in Carbon Nanotube–Silicon Solar Cells
Publisher: Wiley
Date: 25-04-2013
Solution processed graphene structures for perovskite solar cells
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5TA08996D
Abstract: Solution processed graphene electrodes are used as transparent electrodes in perovskite solar cells to test their feasibility. The efficiency obtained using the transparent graphene electrodes is further improved by employing graphene into both compact and mesoporous TiO 2 layers of the devices.
High-Resolution R2R-Compatible Printing of Carbon Nanotube Conductive Patterns Enabled by Cellulose Nanocrystals
Publisher: American Chemical Society (ACS)
Date: 07-01-2022
Efficiency Improvement Using Molybdenum Disulphide Interlayers in Single-Wall Carbon Nanotube/Silicon Solar Cells
Publisher: MDPI AG
Date: 21-04-2018
DOI: 10.3390/MA11040639
Integration of enzyme immobilised single-walled carbon nanotube arrays into microfluidic devices for glucose detection
Publisher: IEEE
Date: 02-2008
Pore spanning lipid bilayers on silanised nanoporous alumina membranes
Publisher: SPIE
Date: 26-12-2008
DOI: 10.1117/12.808769
Electroless plated gold as a support for carbon nanotube electrodes
Publisher: Elsevier BV
Date: 04-2009
Phosphorene and Phosphorene‐Based Materials – Prospects for Future Applications
Publisher: Wiley
Date: 20-07-2016
Abstract: Phosphorene, a single- or few-layered semiconductor material obtained from black phosphorus, has recently been introduced as a new member of the family of two-dimensional (2D) layered materials. Since its discovery, phosphorene has attracted significant attention, and due to its unique properties, is a promising material for many applications including transistors, batteries and photovoltaics (PV). However, based on the current progress in phosphorene production, it is clear that a lot remains to be explored before this material can be used for these applications. After providing a comprehensive overview of recent advancements in phosphorene synthesis, advantages and challenges of the currently available methods for phosphorene production are discussed. An overview of the research progress in the use of phosphorene for a wide range of applications is presented, with a focus on enabling important roles that phosphorene would play in next-generation PV cells. Roadmaps that have the potential to address some of the challenges in phosphorene research are examined because it is clear that the unprecedented chemical, physical and electronic properties of phosphorene and phosphorene-based materials are suitable for various applications, including photovoltaics.
The influence of promoter and of electrode material on the cyclic voltammetry of Pisum sativum plastocyanin
Publisher: Elsevier BV
Date: 12-2002
DOI: 10.1016/S1567-5394(02)00125-1
Abstract: The reversible cyclic voltammetry of pea plastocyanin (Pisum sativum) was studied with a wide range of electrodes: edge-oriented pyrolytic graphite (PGE), glassy carbon (GCE), gold (Au) and platinum (Pt) electrodes. Plastocyanin was coated onto the electrode surface by exploiting the electrostatic interaction between the negatively charged protein and a wide range of positively charged promoters. The effect of the redox response with an extended range of promoters, including poly-L-lysine, polymyxin B, neomycin, tobramycin, geneticin, spermine and spermidine, were included in this study. The resulting cyclic voltammograms reveal that the observed midpoint potential for plastocyanin can be shifted significantly depending on the choice of promoter. The stability of the negatively charged plastocyanin-promoter layer on an electrode was gauged by the rate of bulk diffusion of the protein from the immobilised film into the solution. Reversible cyclic voltammograms were obtained using edge-oriented pyrolytic graphite (PGE) and glassy carbon electrodes (GCE) with all promoters however, platinum and gold electrodes were unable to sustain a defined redox response. The combination of pyrolytic graphite electrode oly-L-lysine lastocyanin was found to be the most stable combination, with a redox response which remained well defined in solution for more than 1 h at pH 7.0. The midpoint potentials obtained in this manner differed between the two graphite electrodes PGE and GCE using poly-L-lysine as the promoter. This effect was in addition to the expected pH dependence of the midpoint potential for plastocyanin and the results indicated that the pK(a) for plastocyanin on PGE was 4.94 compared to that on GCE of 4.66. It is concluded that both the electrode material and the nature of the promoter can influence the position of the redox potentials for proteins measured in vitro. This study extends the range of biogenic promoters used in combination with electrode materials. Thus, we can begin to develop a more comprehensive understanding of electrode-protein interactions and draw conclusions as to metalloprotein function, in vivo. To support these studies, we have sought information as to the nature of the electrode romoter rotein interaction using scanning tunneling microscopy (STM) to study both the promoter and the plastocyanin protein on a gold surface.
Raman spectroscopy probing of self-assembled monolayers inside the pores of gold nanotube membranes
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C1CP21765H
Abstract: Electroless deposition was used to coat porous alumina membranes with gold. This process reduced the pore diameters and provided a platform suitable for surface modifications with self assembled monolayers (SAMs). The surface enhanced Raman scattering (SERS) effect was employed in order to confirm and characterise the formation of SAMs of 3-mercaptobenzoic acid (mMBA) inside the pores of gold nanotube membranes prepared using porous alumina (PA) templates. The investigation of the coverage and reproducibility of SAMs within porous matrices is of utmost importance in the design of filtration membranes and sensing platforms. Raman spectroscopy is capable of spatially resolved techniques such as mapping which was used to characterise the distribution of mMBA assembly within the pores. Due to the highly ordered structure of porous alumina and well controlled electroless gold deposition, these gold coated membranes have the potential to develop into SERS active substrates for ultrasensitive sensing technologies.
Grafting of Poly(ethylene glycol) on Click Chemistry Modified Si(100) Surfaces
Publisher: American Chemical Society (ACS)
Date: 21-06-2013
DOI: 10.1021/LA400721C
Abstract: Poly(ethylene glycol) (PEG) is one of the most extensively studied antifouling coatings due to its ability to reduce protein adsorption and improve biocompatibility. Although the use of PEG for antifouling coatings is well established, the stability and density of PEG layers are often inadequate to provide optimum antifouling properties. To improve on these shortcomings, we employed the stepwise construction of PEG layers onto a silicon surface. Acetylene-terminated alkyl monolayers were attached to nonoxidized crystalline silicon surfaces via a one-step hydrosilylation procedure with 1,8-nonadiyne. The acetylene-terminated surfaces were functionalized via a copper-catalyzed azide-alkyne cycloaddition (CuAAC) reaction of the surface-bound alkynes with an azide to produce an amine terminated layer. The amine terminated layer was then further conjugated with PEG to produce an antifouling surface. The antifouling surface properties were investigated by testing adsorption of human serum albumin (HSA) and lysozyme (Lys) onto PEG layers from phosphate buffer solutions. Detailed characterization of protein fouling was carried out with X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary ion mass spectrometry (ToF-SIMS) combined with principal component analysis (PCA). The results revealed no fouling of albumin onto PEG coatings whereas the smaller protein lysozyme adsorbed to a very low extent.
Application of a novel, non-doped, organic hole-transport layer into single-walled carbon nanotube/silicon heterojunction solar cells
Publisher: MDPI AG
Date: 05-11-2019
DOI: 10.3390/APP9214721
Abstract: The search for novel solar cell designs as an alternative to standard silicon solar cells is important for the future of renewable energy production. One such alternative design is the carbon nanotube/silicon (CNT/Si) heterojunction solar device. In order to improve the performance of large area CNT/Si heterojunction solar cells, a novel organic material, 4,10-bis(bis(4-methoxyphenyl)amino)naptho[7,8,1,2,3-nopqr]tetraphene-6,12-dione (DPA-ANT-DPA (shortened to DAD)), was added as an interlayer between the CNT film and the silicon surface. The interlayer was examined with SEM and AFM imaging to determine an optimal thickness for solar cell performance. The DAD was shown to improve the device performance with the efficiency of large area devices improving from 2.89% ± 0.40% to 3.34% ± 0.10%.
Recent Advances in Applications of Sorted Single‐Walled Carbon Nanotubes
Publisher: Wiley
Date: 20-05-2019
Exfoliated 2D Antimonene-Based Structures for Light-Harvesting Photoactive Layer of Highly Stable Solar Cells
Publisher: Wiley
Date: 05-04-2022
Abstract: 2D materials have shown great promise in various applications including solar cells, but their use as light‐harvesting active layers in photovoltaic (PV) devices is limited. Herein, surface‐oxidized antimonene sheets are prepared using a liquid‐phase exfoliation method and employed as an active light absorber material after functionalization. It is shown that 2D antimonene possesses unique surface chemistry that allows it to form photoactive Sb 2 S 3 light absorbers for solar cells under ambient conditions. Under the standard PV testing conditions (AM1.5G), devices fabricated with 2D antimonene‐based light‐harvesting materials deliver a power conversion efficiency (PCE) of up to 4.28%. This novel type of solar cell exhibits outstanding operational stabilities, preserving % of the initial PCE after aging for 60 min at a temperature of 85 °C, retaining % of the initial efficiency after exposure to continuous light illumination under 1 sun for 180 min, and maintaining its functionality after being underwater for 25 min. This work opens new avenues for research in 2D materials and photovoltaics.
The effects of the lengths and orientations of single-walled carbon nanotubes on the electrochemistry of nanotube-modified electrodes
Publisher: Elsevier BV
Date: 07-2007
p-Type BP nanosheet photocatalyst with AQE of 3.9% in the absence of a noble metal cocatalyst: investigation and elucidation of photophysical properties
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8TA07034B
Abstract: We report microwave-exfoliated p-type few-layer black phosphorous as a photocatalyst for hydrogen production without metal cocatalyst.
Micromechanical properties of human trabecular bone: A hierarchical investigation using nanoindentation
Publisher: Wiley
Date: 17-12-2008
DOI: 10.1002/JBM.A.31766
Abstract: The ability to assess the risk of fracture, evaluate new therapies, predict implant success and assess the influence of bone remodeling disorders requires specific measurement of local bone micromechanical properties. Nanoindentation is an established tool for assessing the micromechanical properties of hard biological tissues. In this study, elastic modulus and hardness were quantified using nanoindentation for human trabecular bone from the intertrochanteric region of the proximal femur. These properties were demonstrated to be heterogeneous and highly correlated at the intraspicule, interspicule, and interspecimen levels. The results of this study have important implications for current understanding of structure-function relationships throughout the trabecular bone structural hierarchy.
Functionalization of vertically aligned carbon nanotubes with polystyrene via surface initiated reversible addition fragmentation chain transfer polymerization
Publisher: Elsevier BV
Date: 2012
Lateral heterogeneities in supported bilayers from pure and mixed phosphatidylethanolamine demonstrating hydrogen bonding capacity
Publisher: American Vacuum Society
Date: 12-2008
DOI: 10.1116/1.3040158
Abstract: The phase behavior and lateral organization of saturated phosphatidylethanolamine (PE) and phosphatidylcholine (PC) bilayers were investigated using atomic force microscopy (AFM) and force-volume (FV) imaging for both pure and two component mixed layers. The results demonstrated the existence of unexpected segregated domains in pure PE membranes at temperatures well below the transition temperature (Tm) of the component phospholipid. These domains were of low mechanical stability and lacked the capacity for hydrogen bonding between lipid headgroups. Temperature dependent studies for different PC/PE ratios using AFM also demonstrated the mixing of these phospholipid bilayers to exhibit only a single gel to liquid transition temperature. Further work performed using FV imaging and chemically modified probes established that no lipid segregation exists at the PC/PE ratios investigated.
Raman Characterisation of Carbon Nanotubes Grown by Plasma Enhanced Chemical Vapour Deposition
Publisher: Trans Tech Publications, Ltd.
Date: 09-2011
DOI: 10.4028/WWW.SCIENTIFIC.NET/MSF.700.112
Abstract: Simple and up-scalable production of carbon nanotubes (CNTs) still remains difficult with current production methods. Plasma enhanced chemical vapour deposition (PECVD) provides an excellent method for producing high purity and large amounts of carbon nanotubes. This work demonstrates how PECVD can be used to tailor the required properties in the resultant nanotubes produced. By altering only one of the growth variables the resultant CNTs can be altered from single-walled to multi-walled. This was achieved by altering the growth temperature from 450-650°C, altering the growth time and altering the underlying catalyst and supporting layer. High purity SWCNT and MWCNT could be produced and easily distinguished leading to a wide range of applications.
Efficiency and stability enhancement of perovskite solar cells using reduced graphene oxide derived from earth-abundant natural graphite
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0RA01423K
Abstract: Solution processed reduced graphene oxide nanosheets have been prepared from naturally abundant graphite flakes and used to enhance the efficiency and stability of perovskite solar cells.
Fabrication of gold nanorod arrays by templating from porous alumina
Publisher: IOP Publishing
Date: 26-08-2005
DOI: 10.1088/0957-4484/16/10/049
Abstract: A simple procedure for fabrication of gold films with nanorod arrays is described. The method is based on thermal evaporation of gold onto a porous alumina (PA) membrane used as a template. The gold films were obtained after removing the template and characterized using scanning electron microscopy, atomic force microscopy and ultraviolet-visible spectrophotometry. The prepared gold films are composed of arrays of sharp (<20 nm at apex) rod-shaped gold nanostructures. These structures closely follow the organization and distribution of pores of the PA template. The length of the gold nanostructures is estimated to range from 300 nm to more than 1000 nm. It was found that their length is influenced by the size of the pores in the PA and the temperature of the PA during gold evaporation. Spectrophotometric characterization shows that the prepared gold films exhibit a surface plasmon resonance absorption peak located between 525 and 540 nm.
Planar silver nanowire, carbon nanotube and PEDOT:PSS nanocomposite transparent electrodes
Publisher: Informa UK Limited
Date: 23-03-2015
Energy Interplay in Materials: Unlocking Next-Generation Synchronous Multisource Energy Conversion with Layered 2D Crystals
Publisher: Wiley
Date: 02-08-2022
Abstract: Layered 2D crystals have unique properties and rich chemical and electronic ersity, with over 6000 2D crystals known and, in principle, millions of different stacked hybrid 2D crystals accessible. This ersity provides unique combinations of properties that can profoundly affect the future of energy conversion and harvesting devices. Notably, this includes catalysts, photovoltaics, superconductors, solar‐fuel generators, and piezoelectric devices that will receive broad commercial uptake in the near future. However, the unique properties of layered 2D crystals are not limited to in idual applications and they can achieve exceptional performance in multiple energy conversion applications synchronously. This synchronous multisource energy conversion (SMEC) has yet to be fully realized but offers a real game‐changer in how devices will be produced and utilized in the future. This perspective highlights the energy interplay in materials and its impact on energy conversion, how SMEC devices can be realized, particularly through layered 2D crystals, and provides a vision of the future of effective environmental energy harvesting devices with layered 2D crystals.
Large-scale immuno-magnetic cell sorting of T cells based on a self-designed high-throughput system for potential clinical application
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7NR04914E
Abstract: A self-designed high-throughput system has been developed for large-scale immuno-magnetic cell sorting of different T cells.
Direct deposition of silver nanoplates on quartz surface by sequence pre-treatment hydroxylation and silanisation
Publisher: Elsevier BV
Date: 2017
Self assembly of bivalent glycolipids on single walled carbon nanotubes and their specific molecular recognition properties
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2RA01192A
Photodissociation dynamics of NO2 at 248 nm
Publisher: Elsevier BV
Date: 05-1991
[CF3Au(C.tplbond.NMe)] as a precursor for CVD of gold
Publisher: American Chemical Society (ACS)
Date: 09-1992
DOI: 10.1021/CM00023A009
Solution chemistry approach to fabricate vertically aligned carbon nanotubes on gold wires: towards vertically integrated electronics
Publisher: IOP Publishing
Date: 26-09-2008
DOI: 10.1088/0957-4484/19/44/445301
Abstract: A monolayer of hexadecyltrichlorosilane, 3-aminopropyltriethoxysilane or 3-mercaptopropyltrimethoxysilane was self-assembled onto a p-type silicon (100) substrate to provide a resist for electrochemical anodization with an atomic force microscope cantilever. Silane treatment of the oxide nanostructures created by anodization lithography allowed for the creation of a chemically heterogeneous surface, containing regions of -NH(2) or -SH surrounded by -CH(3) functionality. These patterned regions of -NH(2) or -SH provided the point of attachment for citrate-stabilized gold colloid nanoparticles, which act as 'seed' particles for the electro-less deposition of gold. This has allowed the creation of gold wires on a silicon surface. Carbon nanotubes, with high carboxylic acid functionality, were vertically immobilized on the patterned gold wires with the use of a cysteamine monolayer and a condensation reaction. Such a material may prove useful in the creation of future vertically integrated electronic devices where it is desirable for electron transport to be in three dimensions and this electron transport is demonstrated with cyclic voltammetry.
Gold nanotube membranes; Fabrication of controlled pore geometries and tailored surface chemistries
Publisher: IEEE
Date: 02-2010
Surface mounted porphyrin-nanotube arrays: Towards energy-harvesting surfaces
Publisher: IEEE
Date: 02-2008
Carbon Nanotube‐Silicon Solar Cells
Publisher: Wiley
Date: 18-06-2012
Supramolecular Mn(II) and Mn(II)/Mn(III) Grid Complexes with [Mn9(μ2-O)12] Core Structures. Structural, Magnetic, and Redox Properties and Surface Studies
Publisher: American Chemical Society (ACS)
Date: 29-05-2004
DOI: 10.1021/IC030319V
Abstract: A series of [3 x 3] Mn(II)(9), antiferromagnetically coupled, alkoxide-bridged, square grid complexes, derived from a group of "tritopic" dihydrazide ligands, is described. The outer ring of eight Mn(II) centers in the grids is isolated magnetically from the central Mn(II) ion, leading to an S = 0 ground state for the ring, and an S = 5/2 ground state overall in each case. Exchange in the Mn(II)(8) ring can be represented by a 1D chain exchange model. Rich electrochemistry displayed by these systems has led to the production of Mn(II)/Mn(III) mixed-oxidation-state grids by both electrochemical and chemical means. Structures are reported for [Mn(9)(2poap)(6)](C(2)N(3))(6).10H(2)O (1), [Mn(9)(2poap)(6)](2)[Mn(NCS)(4)(H(2)O)](2)(NCS)(8).10H(2)O (2), [Mn(9)(2poapz)(6)](NO(3))(6).14.5H(2)O (3), [Mn(9)(2popp)(6)](NO(3))(6).12H(2)O (4), [Mn(9)(2pomp)(6)](MnCl(4))(2)Cl(2).2CH(3)OH.7H(2)O (5), and [Mn(9)(Cl2poap)(6)](ClO(4))(9).7H(2)O (6). Compound 1 crystallized in the tetragonal system, space group P4(2)/n, with a = 21.568(1) A, c = 16.275(1) A, and Z = 2. Compound 2 crystallized in the triclinic system, space group P, with a = 25.043(1) A, b = 27.413(1) A, c = 27.538(2) A, alpha = 91.586(2) degrees, beta = 113.9200(9) degrees, gamma = 111.9470(8) degrees, and Z = 2. Compound 3 crystallized in the triclinic system, space group P, with a = 18.1578(12) A, b = 18.2887(12) A, c = 26.764(2) A, alpha = 105.7880(12) degrees, beta = 101.547(2) degrees, gamma = 91.1250(11) degrees, and Z = 2. Compound 4 crystallized in the tetragonal system, space group P4(1)2(1)2, with a = 20.279(1) A, c = 54.873(6) A, and Z = 4. Compound 5 crystallized in the tetragonal system, space group I, with a = 18.2700(2) A, c = 26.753(2) A, and Z = 2. Compound 6 crystallized in the triclinic system, space group P, with a = 19.044(2) A, b = 19.457(2) A, c = 23.978(3) A, alpha = 84.518(3) degrees, beta = 81.227(3) degrees, gamma = 60.954(2) degrees, and Z = 2. Preliminary surface studies on Au(111), with a Mn(II) grid complex derived from a sulfur-derivatized ligand, indicate monolayer coverage via gold-sulfur interactions, and the potential for information storage at high-density levels.
High-resolution and scalable printing of highly conductive PEDOT:PSS for printable electronics
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1TC03761G
Abstract: Topographical discontinuous dewetting (TDD) and liquid bridge transfer (LBT) was used for submicron resolution, R2R-compatible, high thickness, low line edge roughness patterning of PEDOT:PSS. High conductivities up to ∼2590 S cm −1 were achieved.
Nanoscale structure of lipid domain boundaries
Publisher: Royal Society of Chemistry (RSC)
Date: 2010
DOI: 10.1039/B923719D
The burning rate of energetic films of nanostructured porous silicon
Publisher: Wiley
Date: 19-10-2011
Abstract: A systematic study of nanoenergetic films consisting of nanostructured porous silicon impregnated with sodium perchlorate is carried out. The explosive properties of these films are investigated as a function of thickness, porosity, and confinement. The films' burning rates are investigated using fiber-optic velocity probes, demonstrating that flame-front velocities vary between approximately 1 and 500 m s(-1) and are very sensitive to the films' structural characteristics. Analysis of the flame profile by high-speed video is also presented, suggesting that the reaction type is a deflagration rather than a detonation. A strong plume of flame is emitted from the surface, indicating the potential for this material to perform useful work either as an initiator or as a propellant. The shape of the flame front transitioned from an inverted V at thin-film thicknesses to a neat square-shaped front once the material became self-confining at 50 μm.
Imaging molecular adsorbates using scanning tunneling microscopy and image processing
Publisher: IOP Publishing
Date: 13-09-2002
Supergene gold transformation: Biogenic secondary and nano-particulate gold from arid Australia
Publisher: Elsevier BV
Date: 08-2012
Nitrogen-doped phosphorene for electrocatalytic ammonia synthesis
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0TA03237A
Abstract: A facile and efficient strategy to produce nitrogen-doped (N-doped) phosphorene nanosheets that can be used as an efficient metal-free catalyst for electrochemical ammonia synthesis under ambient conditions is presented.
New developments in composites, copolymer technologies and processing techniques for flexible fluoropolymer piezoelectric generators for efficient energy harvesting
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C8EE03006E
Abstract: A comprehensive review of current developments in flexible fluoropolymer-based piezoelectric generators for sustainable energy harvesting.
The effect of bulk iron concentration and heterogeneities on the copper activation of sphalerite
Publisher: Elsevier BV
Date: 11-2008
Photocurrent Response from Vertically Aligned Single-Walled Carbon Nanotube Arrays
Publisher: American Chemical Society (ACS)
Date: 18-03-2010
DOI: 10.1021/JP1003193
Which parameters affect the response of the channel biosensor?
Publisher: Wiley
Date: 03-2003
Electrochemistry of polystyrene intercalated vertically aligned single- and double-walled carbon nanotubes on gold electrodes
Publisher: Elsevier BV
Date: 11-2011
Material properties of lipid microdomains
Publisher: Elsevier BV
Date: 08-2010
The Potential of Gold Nanoparticle Conjugates to Kill Cancer Cells in Culture
Publisher: Elsevier BV
Date: 2014
Biomineralization of Gold in Biofilms of Cupriavidus metallidurans
Publisher: American Chemical Society (ACS)
Date: 04-03-2013
DOI: 10.1021/ES302381D
Abstract: Cupriavidus metallidurans, a bacterium capable of reductively precipitating toxic, aqueous gold(I/III)-complexes, dominates biofilm communities on gold (Au) grains from Australia. To examine the importance of C. metallidurans biofilms in secondary Au formation, we assessed the biomineralization potential of biofilms growing in quartz-sand-packed columns to periodic amendment with Au(I)-thiosulfate. In these experiments, >99 wt % of Au, was retained compared to <30 wt % in sterilized and abiotic controls. Biomineralization of Au occurred in the presence of viable biofilms via the formation of intra- and extra-cellular spherical nanoparticles, which aggregated into spheroidal and framboidal microparticles of up to 2 μm in diameter. Aggregates of Au formed around cells, eventually encapsulating and ultimately replacing them. These particles were morphologically analogous to Au-particles commonly observed on natural Au grains. Bacterial cells were connected via exopolymer or nanowires to μm-sized, extracellular Au-aggregates, which would intuitively improve the flow of electrons through the biofilm. This study demonstrates the importance of C. metallidurans biofilms for the detoxification of Au-complexes and demonstrates a central role for bacterial biomineralization in the formation of highly pure Au in surface environments.
Nanostructured anode materials for lithium-ion batteries: principle, recent progress and future perspectives
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7TA05283A
Abstract: Recent progress in nanostructured carbon, alloys, transition metal oxides and silicon as anode materials for LIBs has been reviewed.
Printed recyclable and self-poled polymer piezoelectric generators through single-walled carbon nanotube templating
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/C9EE03059J
Abstract: High-performance, unpoled and recyclable piezoelectric generators are produced by combining dipole templating via single-walled carbon nanotubes with shear-induced polarisation via 3D printing of fluoropolymers.
Microwave-assisted synthesis of black phosphorus quantum dots: efficient electrocatalyst for oxygen evolution reaction
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9TA02513H
Abstract: Black phosphorus quantum dots exhibit an impressive catalytic activity for oxygen evolution reaction.
Patterned ferrocenemethanol modified carbon nanotube electrodes on silane modified silicon
Publisher: Royal Society of Chemistry (RSC)
Date: 2007
DOI: 10.1039/B716284G
Nitrogen-Doped CNx /CNTs Heteroelectrocatalysts for Highly Efficient Dye-Sensitized Solar Cells
Publisher: Wiley
Date: 19-12-2017
Application of a hole transporting organic interlayer in graphene oxide/single walled carbon nanotube–silicon heterojunction solar cells
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7TA01782K
Abstract: An organic conductive polymer is used to improve charge transport and efficiency in carbon nanotube–silicon solar cells.
Electrically Sorted Single-Walled Carbon Nanotubes-Based Electron Transporting Layers for Perovskite Solar Cells
Publisher: Elsevier BV
Date: 04-2019
Characterisation of methane plasma treated carbon surfaces
Publisher: IEEE
Date: 02-2008
Chemically immobilised carbon nanotubes on silicon: Stable surfaces for aqueous electrochemistry
Publisher: Elsevier BV
Date: 04-2010
Highly conductive interwoven carbon nanotube and silver nanowire transparent electrodes
Publisher: Informa UK Limited
Date: 03-2013
Hydrogenation of sp2-bonded carbon surfaces using methane plasma
Publisher: Elsevier BV
Date: 2010
Transition from single to multi-walled carbon nanotubes grown by inductively coupled plasma enhanced chemical vapor deposition
Publisher: AIP Publishing
Date: 08-2011
DOI: 10.1063/1.3615945
Abstract: In this work a simple and up-scalable technique for creating arrays of high purity carbon nanotubes via plasma enhanced chemical vapor deposition is demonstrated. Inductively coupled plasma enhanced chemical vapor deposition was used with methane and argon mixtures to grow arrays in a repeatable and controllable way. Changing the growth conditions such as temperature and growth time led to a transition between single and multi-walled carbon nanotubes and was investigated. This transition from single to multi-walled carbon nanotubes is attributed to a decrease in catalytic activity with time due to amorphous carbon deposition combined with a higher susceptibility of single-walled nanotubes to plasma etching. Patterning of these arrays was achieved by physical masking during the iron catalyst deposition process. The low growth pressure of 100 mTorr and lack of reducing gas such as ammonia or hydrogen or alumina supporting layer further show this to be a simple yet versatile procedure. These arrays were then characterized using scanning electron microscopy, Raman spectroscopy and x-ray photoelectron spectroscopy. It was also observed that at high temperature (550 °C) single-walled nanotube growth was preferential while lower temperatures (450 °C) produced mainly multi-walled arrays.
Investigating the Effect of Carbon Nanotube Diameter and Wall Number in Carbon Nanotube/Silicon Heterojunction Solar Cells
Publisher: MDPI AG
Date: 22-03-2016
DOI: 10.3390/NANO6030052
Enhancing Upconversion Luminescence Efficiency via Chiral β-NaYF4:Er3+/Yb3+ Microcrystals Based on Mesoscale Regulation
Publisher: American Chemical Society (ACS)
Date: 28-12-2018
A bright future for engineering piezoelectric 2D crystals
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D1CS00844G
Abstract: We explore piezoelectricity in 2D crystals, envisioning assessment, prediction, and engineering 2D piezoelectricity via chemical, computational, and physical approaches.
Localization and uptake of fluorescently labelled gold nanoparticles by a t47d human breast cancer cell line
Publisher: International Journal of Pharma and Bio Sciences
Date: 25-01-2017
Carbonaceous Dye‐Sensitized Solar Cell Photoelectrodes
Publisher: Wiley
Date: 18-02-2015
Structural and chemical modification of porous alumina membranes
Publisher: Elsevier BV
Date: 11-2009
Enhanced adsorption of mercury ions on thiol derivatized single wall carbon nanotubes
Publisher: Elsevier BV
Date: 10-2013
DOI: 10.1016/J.JHAZMAT.2013.07.076
Abstract: Thiol-derivatized single walled carbon nanotube (SWCNT-SH) powders were synthesized by reacting acid-cut SWCNTs with cysteamine hydrochloride using carbodiimide coupling. Infrared (IR) spectroscopy, Raman spectroscopy and thermogravimetric analysis confirmed the successful functionalization of the SWCNTs. SWCNT-SH powders exhibited a threefold higher adsorption capacity for Hg(II) ions compared to pristine SWCNTs, and a fourfold higher adsorption capacity compared to activated carbon. The influence of adsorption time, pH, initial metal concentration and adsorbent dose on Hg(II) ion removal was investigated. The maximum adsorption capacity of the SWCNT-SH powders was estimated by using equilibrium isotherms, such as Freundlich and Langmuir, and the maximum adsorption capacity of the SWCNT-SH powder was found to be 131 mg/g. A first-order rate model was employed to describe the kinetic adsorption process of Hg(II) ions onto the SWCNT-SH powders. Desorption studies revealed that Hg(II) ions could be easily removed from the SWCNT-SH powders by altering the pH. Further, the adsorption efficiency of recovered SWCNT-SH powders was retained up to 91%, even after 5 adsorption/desorption cycles.
The effects of surface functionality positioning on the transport properties of membranes
Publisher: Elsevier BV
Date: 09-2012
Alginate-graphene oxide hybrid gel beads: An efficient copper adsorbent material
Publisher: Elsevier BV
Date: 05-2013
DOI: 10.1016/J.JCIS.2013.01.051
Abstract: Here we report on the adsorption performance of calcium alginate (Ca-Alg2) and Ca-Alg2 with encapsulated graphene oxide (Ca-Alg2/GO) gel bead adsorbents for the successful removal of Cu(2+) ions from aqueous solution. Different adsorbent doses, Cu(2+) concentrations and contact times were investigated using equilibrium and kinetic studies. The adsorbents were characterized using Fourier transform-infrared (FT-IR) spectroscopy, thermogravimetric analysis (TGA) and focussed ion beam scanning electron microscopy (FIB/SEM). The equilibrium adsorption data were fitted to Langmuir isotherms and the maximum adsorption capacities of the Ca-Alg2 and Ca-Alg2/GO gel beads were found to be 42.7 mg g(-1) and 60.2 mg g(-1), respectively. The equilibrium adsorption data were fitted to a pseudo-second-order kinetic equation showing that the Ca-Alg2 gel beads had a higher kinetic adsorption rate at 0.0425 g mg(-1)min(-1) compared to Ca-Alg2/GO at 0.0179 g mg(-1)min(-1).
Effect of the cyanide-producing bacterium Chromobacterium violaceum on ultraflat Au surfaces
Publisher: Elsevier BV
Date: 07-2009
Use of Carbon Nanotubes (CNTs) with Polymers in Solar Cells
Publisher: MDPI AG
Date: 28-10-2014
The effect of a macrocyclic constraint on electron transfer in helical peptides: A step towards tunable molecular wires
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3CC47885H
Abstract: Two helical peptides, one constrained by a covalent side-chain staple, exhibit vastly different electronic properties despite adopting essentially the same backbone conformation. High level calculations confirm that these differences are due to the additional backbone rigidity imparted by the macrocyclic constraint.
Nanoporous alumina-based interferometric transducers ennobled
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C0NR00897D
Abstract: A high fidelity interferometric transducer is designed based on platinum-coated nanoporous alumina films. The ultrathin metal coating significantly improves fidelity of the interferometric fringe patterns in aqueous solution and increases the signal-to-noise ratio. The performance of this transducer is tested with respect to refractive index unit (RIU) sensitivity measured as a change in effective optical thickness (EOT) in response to a solvent change and compared to porous silicon based transducers. RIU sensitivity in the order of 55% is attainable for porous alumina providing excellent signal-to-noise ratio, which exceeds the sensitivity of current interferometric transducers. Finally, as a proof-of-principle, we demonstrate biosensing with two distinct immunoglobulin antibodies.
Dynamics of Phospholipid Membrane Growth and Drug-Membrane Interactions Probed by Atomic Force Microscopy
Publisher: American Scientific Publishers
Date: 06-2007
Preparation, characterization and electrochemistry of carbon nanotubes directly attached to Si(100) surfaces
Publisher: IEEE
Date: 2006
Integrating polymers with alkanethiol self-assembled monolayers (SAMs): Blocking SAM defects with electrochemical polymerisation of tyramine
Publisher: Elsevier BV
Date: 12-2002
Engineered gold nanotube membranes for molecular separations
Publisher: IEEE
Date: 02-2008
Laser shock ignition of porous silicon based nano-energetic films
Publisher: AIP Publishing
Date: 07-08-2014
DOI: 10.1063/1.4892444
Abstract: Nanoporous silicon films on a silicon wafer were loaded with sodium perchlorate and initiated using illumination with infrared laser pulses to cause laser thermal ignition and laser-generated shock waves. Using Photon Doppler Velocimetry, it was determined that these waves are weak stress waves with a threshold intensity of 131 MPa in the silicon substrate. Shock generation was achieved through confinement of a plasma, generated upon irradiation of an absorptive paint layer held against the substrate side of the wafer. These stress waves were below the threshold required for s le fracturing. Exploiting either the laser thermal or laser-generated shock mechanisms of ignition may permit use of pSi energetic materials in applications otherwise precluded due to their environmental sensitivity.
Influence of dimensions, inter-distance and crystallinity of titania nanotubes (TNTs) on their photocatalytic activity
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3CY01100C
Abstract: The aim of this study is to explore the influence of structural parameters of titania nanotubes (TNTs) including pore diameters, length, nanotube inter-distance and crystallinity on their photocatalytic properties.
Synthesis of three-dimensional rare-earth ions doped CNTs-GO-Fe3O4 hybrid structures using one-pot hydrothermal method
Publisher: Elsevier BV
Date: 11-2015
Silane functionalisation of iron oxide nanoparticles
Publisher: SPIE
Date: 26-12-2008
DOI: 10.1117/12.810679
STM investigation of a Cu organometallic complex adsorbed on Si(111)-(7 × 7)
Publisher: Elsevier BV
Date: 04-1997
Pyramid‐Textured Antireflective Silicon Surface In Graphene Oxide/Single‐Wall Carbon Nanotube–Silicon Heterojunction Solar Cells
Publisher: Wiley
Date: 22-11-2018
DOI: 10.1002/EEM2.12020
Nanoscale Materials in Chemistry(Ed. Kenneth J. Klabunde)
Publisher: CSIRO Publishing
Date: 2002
DOI: 10.1071/CH02005_BR
Nanoscale Patterning of Carbon Nanotubes: Techniques, Applications, and Future
Publisher: Wiley
Date: 23-11-2020
Abstract: Carbon nanotube (CNT) devices and electronics are achieving maturity and directly competing or surpassing devices that use conventional materials. CNTs have demonstrated ballistic conduction, minimal scaling effects, high current capacity, low power requirements, and excellent optical hotonic properties making them the ideal candidate for a new material to replace conventional materials in next‐generation electronic and photonic systems. CNTs also demonstrate high stability and flexibility, allowing them to be used in flexible, printable, and/or biocompatible electronics. However, a major challenge to fully commercialize these devices is the scalable placement of CNTs into desired micro/nanopatterns and architectures to translate the superior properties of CNTs into macroscale devices. Precise and high throughput patterning becomes increasingly difficult at nanoscale resolution, but it is essential to fully realize the benefits of CNTs. The relatively long, high aspect ratio structures of CNTs must be preserved to maintain their functionalities, consequently making them more difficult to pattern than conventional materials like metals and polymers. This review comprehensively explores the recent development of innovative CNT patterning techniques with nanoscale lateral resolution. Each technique is critically analyzed and applications for the nanoscale‐resolution approaches are demonstrated. Promising techniques and the challenges ahead for future devices and applications are discussed.
Scanning tunneling microscopy investigation of nonanuclear [3 × 3] MnIIsupramolecular grids
Publisher: IOP Publishing
Date: 13-12-2005
Synthesis of ultra-long hierarchical ZnO whiskers in a hydrothermal system for dye-sensitised solar cells
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6RA24316A
Abstract: Ultra-long hierarchical ZnO whiskers ( μm) with tunable lengths through one-pot hydrothermal process have been demonstrated.
HIV-1 antibodies and vaccine antigen selectively interact with lipid domains
Publisher: Elsevier BV
Date: 10-2014
Separation of Double-Walled Carbon Nanotubes by Size Exclusion Column Chromatography
Publisher: American Chemical Society (ACS)
Date: 06-06-2014
DOI: 10.1021/NN500756A
Abstract: In this report we demonstrate the separation of raw carbon nanotube material into fractions of double-walled (DWCNTs) and single-walled carbon nanotubes (SWCNTs). Our method utilizes size exclusion chromatography with Sephacryl gel S-200 and yielded two distinct fractions of single- and double-walled nanotubes with average diameters of 0.93 ± 0.03 and 1.64 ± 0.15 nm, respectively. The presented technique is easily scalable and offers an alternative to traditional density gradient ultracentrifugation methods. CNT fractions were characterized by atomic force microscopy and Raman and absorption spectroscopy as well as transmission electron microscopy.
Heterointerface optimization in a covalent organic framework-on-MXene for high-performance capacitive deionization of oxygenated saline water
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D1MH01882E
Abstract: Covalent organic framework-on-MXene heterostructure was fabricated to overcome the poor capacitive deionization performance of conventional materials in natural (oxygenated) saline water.
Electrochemical characterisation of patterned carbon nanotube electrodes on silane modified silicon
Publisher: Elsevier BV
Date: 07-2008
Peptide modified SWNT array-based copper sensor
Publisher: IEEE
Date: 02-2010
Sustainable Polysulfides for Oil Spill Remediation: Repurposing Industrial Waste for Environmental Benefit
Publisher: Wiley
Date: 18-04-2018
Photochemistry of adsorbed molecules. 8. Photodissociation, photoelimination and photoreaction in vinyl chloride on lithium fluoride (001)
Publisher: American Chemical Society (ACS)
Date: 02-1991
DOI: 10.1021/J100156A056
Absorption energetics and simulation of STM images for fluorobenzene on the Cu(110) surface
Publisher: IOP Publishing
Date: 09-2004
Carbon Nanotubes in TiO2 Nanofiber Photoelectrodes for High‐Performance Perovskite Solar Cells
Publisher: Wiley
Date: 20-01-2017
Sensitiveness of Porous Silicon-Based Nano-Energetic Films
Publisher: Wiley
Date: 28-07-2016
Dye functionalisation of PAMAM-type dendrons grown from vertically aligned single-walled carbon nanotube arrays for light harvesting antennae
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C1JM13957F
Unraveling the Interplay of Backbone Rigidity and Electron Rich Side-Chains on Electron Transfer in Peptides: The Realization of Tunable Molecular Wires
Publisher: American Chemical Society (ACS)
Date: 20-08-2014
DOI: 10.1021/JA507175B
Rhenium anchored Ti3C2Tx (MXene) nanosheets for electrocatalytic hydrogen production
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D2NA00782G
Abstract: Ti 3 C 2 T x (MXene) nanosheets are used as an efficient solid support to host rhenium (Re) nanoparticles for electrocatalytic hydrogen production.
Fabrication of self-supporting porous silicon membranes and tuning transport properties by surface functionalization
Publisher: Royal Society of Chemistry (RSC)
Date: 2010
DOI: 10.1039/C0NR00284D
Abstract: This study presents a simple approach to perform selective mass transport through freestanding porous silicon (pSi) membranes. pSi membranes were fabricated by the electrochemical etching of silicon to produce membranes with controlled structure and pore sizes close to molecular dimensions (approximately 12 nm in diameter). While these membranes are capable of size-exclusion based separations, chemically specific filtration remains a great challenge especially in the biomedical field. Herein, we investigate the transport properties of chemically functionalized pSi membranes. The membranes were functionalized using silanes (heptadecafluoro-1,1,2,2-tetrahydrodecyl)dimethylchlorosilane (PFDS) and N-(triethoxysilylpropyl)-o-polyethylene oxide urethane (PEGS) to give membranes hydrophobic (PFDS) and hydrophilic (PEGS) properties. The transport of probe dyes tris(2,2'-bipyridyl)dichlororuthenium(ii) hexahydrate (Rubpy) and Rose Bengal (RB) through these functionalized membranes was examined to determine the effect surface functionalization has on the selectivity and separation ability of pSi membranes. This study provides the basis for further investigation into more sophisticated surface functionalization and coupled with the biocompatibility of pSi will lead to new advances in membrane based bio-separations.
Insights into chemical doping to engineer the carbon nanotube/silicon photovoltaic heterojunction interface
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7TA08445E
Abstract: Graphene oxide/single-wall carbon nanotube (GOCNT) hybrid films have been used to fabricate heterojunction solar cells with silicon (Si) due to their compatibility with both aqueous and organic processing.
Graphene masks as passivation layers in the electrochemical etching of silicon
Publisher: Springer Science and Business Media LLC
Date: 02-08-2014
Few-layer black phosphorus and boron-doped graphene based heteroelectrocatalyst for enhanced hydrogen evolution
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0TA07659G
Abstract: Efficient heterostructured electrocatalysts based on two-dimensional few-layer black phosphorus nanosheets and boron-doped graphene are designed for the hydrogen evolution reaction.
Enhanced molecular chaperone activity of the small heat-shock protein αB-crystallin following covalent immobilization onto a solid-phase support
Publisher: Wiley
Date: 10-01-2011
DOI: 10.1002/BIP.21584
Abstract: The well-characterized small heat-shock protein, alphaB-crystallin, acts as a molecular chaperone by interacting with unfolding proteins to prevent their aggregation and precipitation. Structural perturbation (e.g., partial unfolding) enhances the in vitro chaperone activity of alphaB-crystallin. Proteins often undergo structural perturbations at the surface of a synthetic material, which may alter their biological activity. This study investigated the activity of alphaB-crystallin when covalently bound to a support surface alphaB-crystallin was immobilized onto a range of solid material surfaces, and its characteristics and chaperone activity were assessed. Immobilization was achieved via a plasma-deposited thin polymeric interlayer containing aldehyde surface groups and reductive amination, leading to the covalent binding of alphaB-crystallin lysine residues to the surface aldehyde groups via Schiff-base linkages. Immobilized alphaB-crystallin was characterized by X-ray photoelectron spectroscopy, atomic force microscopy, and quartz crystal microgravimetry, which showed that 300 ng cm(-2) (dry mass) of oligomeric alphaB-crystallin was bound to the surface. Immobilized alphaB-crystallin exhibited a significant enhancement (up to 5000-fold, when compared with the equivalent activity of alphaB-crystallin in solution) of its chaperone activity against various proteins undergoing both amorphous and amyloid fibril forms of aggregation. The enhanced molecular chaperone activity of immobilized alphaB-crystallin has potential applications in preventing protein misfolding, including against amyloid disease processes, such as dialysis-related amyloidosis, and for biodiagnostic detection of misfolded proteins.
Plasmonic Gold Nanostars Incorporated into High‐Efficiency Perovskite Solar Cells
Publisher: Wiley
Date: 03-08-2017
Abstract: Incorporating appropriate plasmonic nanostructures into photovoltaic (PV) systems is of great utility for enhancing photon absorption and thus improving device performance. Herein, the successful integration of plasmonic gold nanostars (AuNSs) into mesoporous TiO
Gold nanotube membranes functionalised with fluorinated thiols for selective molecular transport
Publisher: Elsevier BV
Date: 02-2009
Kinetics of concurrent desorption and diffusion into the solid: D/Zr(0001)
Publisher: AIP Publishing
Date: 15-03-1997
DOI: 10.1063/1.473478
Abstract: Rapid adsorbate diffusion into the solid is known to suppress the desorption yield measured in a thermal desorption experiment. We show that this suppression can be controlled (at least partly) by pulsed-laser heating at rates in excess of 1010 K/s. As an ex le, we analyze the D/Zr system. In this case, deuterium adsorbed on a surface rapidly diffuses into the bulk of Zr with increasing temperature, and the deuterium desorption probability measured with conventional heating rates (β⩽100 K/s) is as low as ≈10−4 for polycrystalline Zr foils (deuterium desorption is not observed at all from single-crystal Zr from which dissolved H/D has been removed). Heating the Zr(0001) surface by pulsed-laser thermal excitation with β≃1011 K/s is demonstrated to result in the increase of the deuterium desorption probability up to approximately 0.01. To interpret this observation, general equations for describing associative desorption accompanied by adsorbate diffusion into the solid are simplified by employing the specifics of the temperature-programmed kinetic regimes with a linear increase of temperature. The desorption yield calculated without any adjustable parameters is in good agreement with the experimental results.
Improved field emission stability from single-walled carbon nanotubes chemically attached to silicon
Publisher: Springer Science and Business Media LLC
Date: 08-2012
Optimization and Doping of Reduced Graphene Oxide-Silicon Solar Cells
Publisher: American Chemical Society (ACS)
Date: 15-12-2016
Patterned polyaniline & carbon nanotube–polyaniline composites on silicon
Publisher: Royal Society of Chemistry (RSC)
Date: 2009
DOI: 10.1039/B809609K
Heterojunction Solar Cells Based on Silicon and Composite Films of Graphene Oxide and Carbon Nanotubes
Publisher: Wiley
Date: 08-05-2015
Abstract: Graphene oxide (GO) sheets have been used as the surfactant to disperse single-walled carbon nanotubes (CNT) in water to prepare GO/CNT electrodes that are applied to silicon to form a heterojunction that can be used in solar cells. GO/CNT films with different ratios of the two components and with various thicknesses have been used as semitransparent electrodes, and the influence of both factors on the performance of the solar cell has been studied. The degradation rate of the GO/CNT-silicon devices under ambient conditions has also been explored. The influence of the film thickness on the device performance is related to the interplay of two competing factors, namely, sheet resistance and transmittance. CNTs help to improve the conductivity of the GO/CNT film, and GO is able to protect the silicon from oxidation in the atmosphere.
Electron-transfer characteristics of ferrocene attached to single-walled carbon nanotubes (SWCNT) arrays directly anchored to silicon(100)
Publisher: Elsevier BV
Date: 06-2007
Single-Walled Carbon Nanotubes Enhance the Efficiency and Stability of Mesoscopic Perovskite Solar Cells
Publisher: American Chemical Society (ACS)
Date: 02-06-2017
Abstract: Carbon nanotubes are 1D nanocarbons with excellent properties and have been extensively used in various electronic and optoelectronic device applications including solar cells. Herein, we report a significant enhancement in the efficiency and stability of perovskite solar cells (PSCs) by employing single-walled carbon nanotubes (SWCNTs) in the mesoporous photoelectrode. It was found that SWCNTs provide both rapid electron transfer and advantageously shifts the conduction band minimum of the TiO
Biomimetic supported lipid bilayers with high cholesterol content formed by α-helical peptide-induced vesicle fusion
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2JM32016A
Patterned attachment of carbon nanotubes to silicon
Publisher: IEEE
Date: 02-2008
Efficiency Enhancement of Single‐Walled Carbon Nanotube‐Silicon Heterojunction Solar Cells Using Microwave‐Exfoliated Few‐Layer Black Phosphorus
Publisher: Wiley
Date: 02-11-2017
Gold Nanotube Membranes
Publisher: Wiley
Date: 27-09-2013
DOI: 10.1002/9781118522318.EMST139
Abstract: In this review, we discuss gold nanotube membranes, which are of interest in the field of membrane separations. The review briefly describes the template synthesis approach based on electroless gold deposition for production of these membranes using polymer track‐etched and porous alumina membranes as a template. Separation using gold nanotube membranes based on strategies such as molecular size exclusion, charge, and molecular recognition are also presented. Gold nanotube membranes can perform various separations of ions, organic molecules, proteins, and nucleic acid. This review covers the concepts underlying the separation mechanisms as well as representative applications of gold nanotube membranes in biosensing, catalysis, and biomedical applications. The review concludes with an outlook providing a perspective for further developments and applications of gold nanotube membranes.
A Comparative Study on the Role of Polyvinylpyrrolidone Molecular Weight on the Functionalization of Various Carbon Nanotubes and Their Composites
Publisher: MDPI AG
Date: 25-07-2021
Abstract: Polyvinylidene fluoride (PVDF) nanocomposites filled with polyvinylpyrrolidone (PVP) wrapped carbon nanotubes were prepared via a solution casting technique. The effect of the molecular weight (polymer chain length) of the PVP on the ability to wrap different nanotube structures and its impact towards nanotube dispersibility in the polymer matrix was explored. The study was conducted with PVP of four different molecular weights and nanotubes of three different structures. The composites that exhibit an effective nanotube dispersion lead to a nanotube network that facilitates improved thermal, electrical, and mechanical properties. It was observed that nanotubes of different structures exhibit stable dispersions in the polymer matrix though PVP functionalization of different molecular weights, but the key is achieving an effective nanotube dispersion at low PVP concentrations. This is observed in MWNT and AP-SWNT based composites with PVP of low molecular weight, leading to a thermal conductivity enhancement of 147% and 53%, respectively, while for P3-SWNT based composites, PVP of high molecular weight yields an enhancement of 25% in thermal conductivity compared to the non-functionalized CNT-PVDF composite.
Effect of Modification Protocols on the Effectiveness of Gold Nanoparticles as Drug Delivery Vehicles for Killing of Breast Cancer Cells
Publisher: CSIRO Publishing
Date: 2016
DOI: 10.1071/CH16430
Abstract: The current study evaluated the potential of gold nanoparticles (AuNPs) for the delivery of Taxol to breast cancer cells (T47D) using an in vitro cell culture model. For this study, new loading approaches and novel chemical attachments were investigated. Five different gold nanoparticle-based complexes were used to determine their cytotoxicity towards T47D cells using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) viability assay. There was no significant decrease (P 0.05) in cell viability when T47D cells were treated with AuNPs that did not contain Taxol. However, cells were significantly killed by gold nanoparticles chemically conjugated to Taxol using three different approaches and one novel hybrid AuNP-Taxol nanoparticle, wherein no chemical bonds were involved. These Taxol-loaded AuNPs were more effective at inducing cell death in vitro than a solution of free Taxol used to treat cells. This result demonstrated that Taxol could be released from the particles in the cell culture media for subsequent therapeutic action. Additionally, the experiments proved that the Taxol-loaded AuNPs were more toxic in a dose dependent manner than Taxol as a formulation for the treatment of breast cancer cells. The results of this study suggest that gold nanoparticles have potential for the efficient delivery of Taxol to breast cancer cells. This could provide a future solution as an alternative application method to overcome adverse side effects resulting from current high-dose treatment regimes.
Preparation of Carbon Surfaces for Sensing Applications via Plasma Hydrogenation
Publisher: IEEE
Date: 2006
Optimization of the Metal Front Contact Design for Single‐Walled Carbon Nanotube‐Silicon Heterojunction Solar Cells
Publisher: Wiley
Date: 02-2017
Factors affecting carbon nanotube fillers towards enhancement of thermal conductivity in polymer nanocomposites: A review
Publisher: SAGE Publications
Date: 05-02-2017
Abstract: Thermally conductive polymer composites have opened up new possibilities in various applications including solar cells, power generators, electronics, biomedical applications, etc. Polymer matrices have some interesting advantages to offer such as being lightweight, cost effective, corrosion resistant, and many more. However, the thermal conductivity of a polymer matrix is relatively low for some commercial applications. Recent research has focused on enhancing the thermal conductivity of polymer composites through addition of nanofillers such as nanotubes, graphite, carbon fibers, etc. Among these possibilities, carbon nanotubes are considered to be promising candidates due to their unusually high thermal conductivity. This article discusses the properties of nanotube fillers that should be taken into account in order to fabricate a thermally conductive polymer nanocomposite and reviews the status of research in terms of thermal conductivity and nanotubes.
High-order graphene oxide nanoarchitectures
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C1NR10406C
Abstract: We fabricate unique photoluminescent three dimensional graphene oxide (GO) architectures, so-called GO flowers, by self-assembly onto silicon substrates via solvent-mediated volume-controlled growth. The GO flowers exhibited bright photoluminescence and a photoresponse demonstrating their potential for advanced optical and electronic applications, such as advanced photovoltaic devices and organic light emitting diodes.
Optical and Electrochemical Properties of Single‐walled Carbon Nanotube Arrays Attached to Silicon (100) Surfaces
Publisher: Informa UK Limited
Date: 2008
Mapping of defects in self-assembled monolayers by polymer decoration
Publisher: Springer Science and Business Media LLC
Date: 10-12-2005
Dendron growth from vertically aligned single-walled carbon nanotube thin layer arrays for photovoltaic devices
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C0CP02740E
Abstract: Single-walled carbon nanotube arrays attached to conductive transparent electrodes have previously shown promise for use in photovoltaic devices, whilst still retaining light transmission. Here, chemical modification of these thin (<200 nm) arrays with PAMAM-type dendrons has been undertaken to enhance the photoresponse of these devices. The effect of modification on the electrode was measured by differential pulse voltammetry to detect the dendrons, and the effect on the nanotubes was measured by Raman spectroscopy. Solar simulator illumination of the cells was performed to measure the effect of the nanotube modification on the cell power, and determine the optimal modification. Electrochemical impedance spectroscopy was also used to investigate the equivalent electronic circuit elements of the cells. The optimal dendron modification occurred with the second generation (G-2.0), which gave a 70% increase in power over the unmodified nanotube array.
Fabrication and electrochemical behavior of vertically-aligned carbon nanotube electrodes covalently attached to p-type silicon via a thioester linkage
Publisher: Elsevier BV
Date: 04-2009
Preparation and characterisation of an aligned carbon nanotube array on the silicon (100) surface
Publisher: Royal Society of Chemistry (RSC)
Date: 2006
DOI: 10.1039/B611016A
Membrane–drug interactions studied using model membrane systems
Publisher: Elsevier BV
Date: 11-2015
Nanopore gradients on porous aluminum oxide generated by nonuniform anodization of aluminum
Publisher: American Chemical Society (ACS)
Date: 24-11-2010
DOI: 10.1021/AM100502U
Abstract: A method for surface engineering of structural gradients with nanopore topography using the self-ordering process based on electrochemical anodization of aluminum is described. A distinct anodization condition with an asymmetrically distributed electric field at the electrolyte/aluminum interface is created by nonparallel arrangement between electrodes (tilted by 45°) in an electrochemical cell. The anodic aluminum oxide (AAO) porous surfaces with ordered nanopore structures with gradual and continuous change of pore diameters from 80 to 300 nm across an area of 0.5-1 cm were fabricated by this anodization using two common electrolytes, oxalic acid (0.3 M) and phosphoric acid (0.3 M). The formation of pore gradients of AAO is explained by asymmetric and gradual distribution of the current density and temperature variation generated on the surface of Al during the anodization process. Optical and wetting gradients of prepared pore structures were confirmed by reflective interferometric spectroscopy and contact angle measurements showing the ability of this method to generate porous surfaces with multifunctional gradients (structural, optical, wetting). The study of influence of pore structures on cell growth using the culture of neuroblastoma cells reveals biological relevance of nanopore gradients and the potential to be applied as the platform for spatially controllable cell growth and cell differentiation.
The influence of pore size and oxidising agent on the energetic properties of porous silicon
Publisher: SPIE
Date: 26-12-2008
DOI: 10.1117/12.810453
Incorporation of graphene into SnO2 photoanodes for dye-sensitized solar cells
Publisher: Elsevier BV
Date: 11-2016
Plasma modified carbon surfaces for supporting sensor architectures
Publisher: SPIE
Date: 27-12-2006
DOI: 10.1117/12.696223
Ag2SO4 decorated with fluorescent Agn nanoclusters
Publisher: Elsevier BV
Date: 04-2013
Ruthenium Porphyrin Functionalized Single-Walled Carbon Nanotube Arrays—A Step Toward Light Harvesting Antenna and Multibit Information Storage
Publisher: American Chemical Society (ACS)
Date: 14-06-2008
DOI: 10.1021/JA801142K
Efficient Production of Phosphorene Nanosheets via Shear Stress Mediated Exfoliation for Low‐Temperature Perovskite Solar Cells
Publisher: Wiley
Date: 08-02-2019
Advanced Microscopic Characterisation through Integrated Learning Tools
Publisher: Oxford University Press (OUP)
Date: 07-2011
DOI: 10.1017/S1431927611005228
Abstract: Extended abstract of a paper presented at Microscopy and Microanalysis 2011 in Nashville, Tennessee, USA, August 7–August 11, 2011.
Characterisation of the Binding of Cationic Amphiphilic Drugs to Phospholipid Bilayers Using Surface Plasmon Resonance
Publisher: Wiley
Date: 03-2007
Abstract: The interactions of three cationic hiphilic drugs (CPZ, AMI, PROP) with phospholipid vesicles comprising DOPC, DMPC, or DSPC were investigated using surface plasmon resonance (SPR). Responses for CAD concentrations in the range 15.625 to 1500 microM were measured. The greatest uptake by each phospholipid bilayer occurred with CPZ. Inclusion of CAD concentrations between 750 and 1500 microM provided evidence for a second nonsaturable binding process, which may arise from intercalation of the drugs within the lipid bilayer. CAD binding was additionally shown to be dependent on membrane fluidity. Responses were initially fitted over a concentration range of 15.625 to 500 microM using a model which incorporated terms for a saturable binding site. This yielded very poor values of K(D) and nonsensible values of saturation responses. Subsequently, responses were fit to the expression for a model which incorporated terms for both a saturable binding site and second nonsaturable site. Measurable binding affinities (K(D) values ranged from 170 to 814 microM) were obtained for DOPC and DMPC bilayers which are similar to values reported previously. This work demonstrates that SPR studies with synthetic phospholipid bilayers provide a potentially useful approach for characterising drug-membrane binding interactions and for providing insight into the processes that contribute to drug-membrane binding.
Article
Publisher: Canadian Science Publishing
Date: 11-1998
DOI: 10.1139/V98-124
Abstract: The adsorption of the organometallic compounds bis(hexafluoroacetylacetonato)zinc(II) (Zn(hfac) 2 ) and bis(hexafluoroacetylacetonato)nickel(II) (Ni(hfac) 2 ) on the surface of Si(111)-7×7 were studied by a combination of scanning tunnelling microscopy (STM) and X-ray photoelectron spectroscopy (XPS). These compounds are analogues of the compound bis(hexafluoroacetylacetonato)copper(II), which is an important precursor for the chemical vapour deposition of copper that we have previously studied. Both XPS and STM results indicate that the Zn(hfac) 2 is adsorbed intact on the surface, and remains intact on the surface at temperatures up to 300 K. The XPS shows a transition from a physisorbed state to a chemisorbed state at temperatures between 160 and 300 K. At higher temperatures Zn(hfac) 2 decomposed to form Zn and fluorocarbon fragments. The metal component diffused into the substrate. The Ni(hfac) 2 complex could not be successfully adsorbed on the Si surface: it was shown that this was due to decomposition of the molecule in the vapour phase, probably due to the higher temperatures needed to evaporate this relatively involatile compound.Key words: scanning tunnelling microscopy, chemical vapour deposition, zinc, copper.
Nanosphere Lithography Using Thermal Evaporation of Gold
Publisher: IEEE
Date: 2006
Heterojunction Solar Cells Based on Silicon and Composite Films of Polyaniline and Carbon Nanotubes
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 05-2016
The influence of nanopore dimensions on the electrochemical properties of nanopore arrays studied by impedance spectroscopy
Publisher: MDPI AG
Date: 11-11-2014
DOI: 10.3390/S141121316
Role of Molecular Weight in Polymer Wrapping and Dispersion of MWNT in a PVDF Matrix
Publisher: MDPI AG
Date: 17-01-2019
Abstract: The thermal and electrical properties of a polymer nanocomposite are highly dependent on the dispersion of the CNT filler in the polymer matrix. Non-covalent functionalisation with a PVP polymer is an excellent driving force towards an effective dispersion of MWNTs in the polymer matrix. It is shown that the PVP molecular weight plays a key role in the non-covalent functionalisation of MWNT and its effect on the thermal and electrical properties of the polymer nanocomposite is reported herein. The dispersion and crystallisation behaviour of the composite are also evaluated by a combination of scanning electron microscopy (SEM) and differential scanning calorimetry (DSC).
Ti3C2Tx (MXene)‐Silicon Heterojunction for Efficient Photovoltaic Cells
Publisher: Wiley
Date: 09-07-2019
ToF‐SIMS characterisation of methane‐ and hydrogen‐plasma‐modified graphite using principal component analysis
Publisher: Wiley
Date: 20-01-2009
DOI: 10.1002/SIA.3010
Laser induced desorption and interconversion of linear and bridge bonded CO on Pt(100) : progress towards time-resolved IR spectroscopy of surface processes
Publisher: Elsevier BV
Date: 12-1994
Combined thermal and FTIR analysis of porous silicon based nano-energetic films
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C6RA27028J
Abstract: Combinations of analytical techniques lead to new insights for the early stages of explosive reactions.
Atomic Force Microscopy Imaging of Glucose Oxidase using Chemically Modified Tips
Publisher: CSIRO Publishing
Date: 2003
DOI: 10.1071/CH03122
Abstract: Atomic force microscopy (AFM) tips have been chemically modified using a variety of approaches mostly based on self-assembled monolayers (SAMs). Tips with both a hydrophobic and hydrophilic nature have been prepared and used to image glucose oxidase covalently attached to a self-assembled monolayer.
1D‐2D Synergistic MXene‐Nanotubes Hybrids for Efficient Perovskite Solar Cells
Publisher: Wiley
Date: 02-07-2021
Abstract: Incorporation of 2D MXenes into the electron transporting layer (ETL) of perovskite solar cells (PSCs) has been shown to deliver high‐efficiency photovoltaic (PV) devices. However, the ambient fabrication of the ETLs leads to unavoidable deterioration in the electrical properties of MXene due to oxidation. Herein, sorted metallic single‐walled carbon nanotubes (m‐SWCNTs) are employed to prepare MXene/SWCNTs composites to improve the PV performance of PSCs. With the optimized composition, a power conversion efficiency of over 21% is achieved. The improved photoluminescence and reduced charge transfer resistance revealed by electrochemical impedance spectroscopy demonstrated low trap density and improved charge extraction and transport characteristics due to the improved conductivity originating from the presence of nanotubes as well as the reduced defects associated with oxygen vacancies on the surface of the SnO 2 . The MXene/SWCNTs strategy reported here provides a new avenue for realizing high‐performance PSCs.
Thickness/morphology of functional material patterned by topographical discontinuous dewetting
Publisher: Wiley
Date: 08-03-2021
Abstract: Topographical discontinuous dewetting (TDD) patterning is a nascent 2D printing technique explored for high‐throughput nanoscale patterning of functional material inks. However, variables affecting the z thickness and morphology of the deposited functional materials inside the patterned microchannels remain unexplored. We developed a theoretical model that can determine the thickness of the deposited functional material layers using the TDD patterning technique. We then confirmed the model with experimental data by depositing colloidal dispersions into microchannels using TDD patterning to systematically study the effects of different processing variables. The contribution of evaporation‐driven flow to the deposited layer thickness was significant, with the relationship of thickness to inking speed different to that previously determined for thin film blade coating of colloidal dispersions in the evaporative regime. Additionally, a viscosity d ening effect was observed, unique to TDD of microchannels, which slowed the evaporation‐driven flow due to local viscosity increase in the microchannels. Channel dimensions and ink dispersion concentration affected thickness as hypothesized. Internal flows in the microchannels normal to the sidewalls and perpendicular to the microchannel length (“coffee ring” effect capillary flow/Marangoni flow) were found to contribute significantly to the final morphology/thickness of the deposited layers for the systems/dispersions experimentally measured.
The interaction of atomic deuterium with sulphur passivated InP(100) − (1 × 1)
Publisher: Elsevier BV
Date: 10-1994
Scanning tunneling microscopy studies of glucose oxidase on gold surfaces
Publisher: American Chemical Society (ACS)
Date: 04-06-2002
DOI: 10.1021/LA015654F
Sorghum biomass-derived porous carbon electrodes for capacitive deionization and energy storage
Publisher: Elsevier BV
Date: 2021
Hydrothermal Synthesis of Monodispersed BaGdF5 :Yb/Er Nanoparticles for CT and MR Imaging
Publisher: Wiley
Date: 23-10-2016
Pathway to high throughput, low cost indium-free transparent electrodes
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5TA03248B
Abstract: A high throughput process is reported for the production of a highly conductive, transparent planar electrode comprising of silver nanowires and single walled carbon nanotubes imbedded into PEDOT:PSS.
Carbon Nanotubes for Dye-Sensitized Solar Cells
Publisher: Wiley
Date: 10-04-2015
Abstract: As one type of emerging photovoltaic cell, dye-sensitized solar cells (DSSCs) are an attractive potential source of renewable energy due to their eco-friendliness, ease of fabrication, and cost effectiveness. However, in DSSCs, the rarity and high cost of some electrode materials (transparent conducting oxide and platinum) and the inefficient performance caused by slow electron transport, poor light-harvesting efficiency, and significant charge recombination are critical issues. Recent research has shown that carbon nanotubes (CNTs) are promising candidates to overcome these issues due to their unique electrical, optical, chemical, physical, as well as catalytic properties. This article provides a comprehensive review of the research that has focused on the application of CNTs and their hybrids in transparent conducting electrodes (TCEs), in semiconducting layers, and in counter electrodes of DSSCs. At the end of this review, some important research directions for the future use of CNTs in DSSCs are also provided.
Water Transport Through Nanoporous Materials: Porous Silicon and Single Walled Carbon Nanotubes
Publisher: IEEE
Date: 02-2010
Electrocatalytic Activity of a 2D Phosphorene‐Based Heteroelectrocatalyst for Photoelectrochemical Cells
Publisher: Wiley
Date: 08-02-2018
Fe3O4@S nanoparticles embedded/coated on the multi-wall carbon nanotubes for rechargeable lithium batteries
Publisher: Elsevier BV
Date: 02-2018
Exfoliated 2D Antimonene‐Based Structures for Light‐Harvesting Photoactive Layer of Highly Stable Solar Cells
Publisher: Wiley
Date: 06-2022
Advances in carbon nanotube n-type doping: Methods, analysis and applications
Publisher: Elsevier BV
Date: 2018
In situ monitoring of the effect of ionic strength and pH on plasma polymer thin films
Publisher: Wiley
Date: 24-05-2017
Multifunctional Core@Shell Magnetic Nanoprobes for Enhancing Targeted Magnetic Resonance Imaging and Fluorescent Labeling in Vitro and in Vivo
Publisher: American Chemical Society (ACS)
Date: 18-05-2017
Abstract: Core@shell magnetic nanoparticles (core@shell MNPs) are attracting widespread attention due to their enhancement properties for potential applications in hyperthermia treatment, magnetic resonance imaging (MRI), diagnostics, and so forth. Herein, we developed a facile thermal decomposition method for controllable synthesis of a superparamagnetic, monodispersed core@shell structure (Co@Mn = CoFe
In vivo targeted therapy of gastric tumors via the mechanical rotation of a flower-like Fe3O4@Au nanoprobe under an alternating magnetic field
Publisher: Springer Science and Business Media LLC
Date: 07-2017
DOI: 10.1038/AM.2017.117
SWCNT photocathodes sensitised with InP/ZnS core-shell nanocrystals
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5TC03833B
Abstract: Increasing the light harvesting efficiency of photocathodes is an integral part of optimising the future efficiencies of solar technologies.
Recent Development of Carbon Nanotube Transparent Conductive Films
Publisher: American Chemical Society (ACS)
Date: 05-10-2016
DOI: 10.1021/ACS.CHEMREV.6B00179
Abstract: Transparent conducting films (TCFs) are a critical component in many personal electronic devices. Transparent and conductive doped metal oxides are widely used in industry due to their excellent optoelectronic properties as well as the mature understanding of their production and handling. However, they are not compatible with future flexible electronics developments where large-scale production will likely involve roll-to-roll manufacturing. Recent studies have shown that carbon nanotubes provide unique chemical, physical, and optoelectronic properties, making them an important alternative to doped metal oxides. This Review provides a comprehensive analysis of carbon nanotube transparent conductive films covering detailed fabrication methods including patterning of the films, chemical doping effects, and hybridization with other materials. There is a focus on optoelectronic properties of the films and potential in applications such as photovoltaics, touch panels, liquid crystal displays, and organic light-emitting diodes in conjunction with a critical analysis of both the merits and shortcomings of carbon nanotube transparent conductive films.
Kinetics Membrane Disruption Due to Drug Interactions of Chlorpromazine Hydrochloride
Publisher: American Chemical Society (ACS)
Date: 18-12-2008
DOI: 10.1021/LA803288S
Abstract: Drug-membrane interactions assume considerable importance in pharmacokinetics and drug metabolism. Here, we present the interaction of chlorpromazine hydrochloride (CPZ) with supported phospholipid bilayers. It was demonstrated that CPZ binds rapidly to phospholipid bilayers, disturbing the molecular ordering of the phospholipids. These interactions were observed to follow first order kinetics, with an activation energy of approximately 420 kJ mol(-1). Time-dependent membrane disruption was also observed for the interaction with CPZ, such that holes appeared in the phospholipid bilayer after the interaction of CPZ. For this process of membrane disruption, "lag-burst" kinetics was demonstrated.
Emerging 2D Layered Materials for Perovskite Solar Cells
Publisher: Wiley
Date: 20-08-2019
Abstract: Perovskite solar cells (PSCs) are now at the forefront of the state‐of‐the‐art photovoltaic technologies due to their high efficiency and low fabrication costs. To further realize the potential of this fascinating class of solar cells, nanostructured functional materials have been playing important roles. 2D layered materials have attracted a great deal of interest due to their fascinating properties and unique structure. Recently, the exploration of a wide range of novel 2D materials for use in PSCs has seen considerable progress, but still a lot remains to be done in this field. In this progress report, the advancements that have recently been made in the application of these emerging 2D materials, beyond graphene, for PSCs are presented. Both the advantages and challenges of these 2D materials for PSCs are highlighted. Finally, important directions for the future advancements toward efficient, low‐cost, and stable PSCs are outlined.
The potential sunlight harvesting efficiency of carbon nanotube solar cells
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3EE41731J
The role of sodium dodecyl sulfate concentration in the separation of carbon nanotubes using gel chromatography
Publisher: Elsevier BV
Date: 08-2013
Electrochemical and Computational Studies on Intramolecular Dissociative Electron Transfer in β-Peptides
Publisher: American Chemical Society (ACS)
Date: 06-12-2012
DOI: 10.1021/JP3082563
Adhesion of chemically and electrostatically bound gold nanoparticles to a self-assembled silane monolayer investigated by atomic force volume spectroscopy
Publisher: Springer Science and Business Media LLC
Date: 25-11-2008
Nanoporous anodic aluminium oxide membranes with layered surface chemistry
Publisher: Royal Society of Chemistry (RSC)
Date: 2009
DOI: 10.1039/B901745C
Abstract: A new and facile method is described to prepare Janus-like nanoporous anodic aluminium oxide (AAO) membranes with distinctly different internal and external surface chemistry.
Direct‐Patterning SWCNTs Using Dip Pen Nanolithography for SWCNT/Silicon Solar Cells
Publisher: Wiley
Date: 25-03-2018
Abstract: Dip pen nanolithography (DPN) is used to pattern single-walled carbon nanotube (SWCNT) lines between the n-type Si and SWCNT film in SWCNT/Si solar cells. The SWCNT ink composition, loading, and DPN pretreatment are optimized to improve patterning. This improved DPN technique is then used to successfully pattern >1 mm long SWCNT lines consistently. This is a 20-fold increase in the previously reported direct-patterning of SWCNT lines using the DPN technique, and demonstrates the scalability of the technique to pattern larger areas. The degree of the uniformity of SWCNTs in these lines is further characterized by Raman spectroscopy and scanning electron microscopy. The patterned SWCNT lines are used as thin conductive pathways in SWCNT/Si solar cells, similar to front contact electrodes. The critical parameters of these solar cells are measured and compared to control cells without SWCNT lines. The addition of SWCNT lines increases power conversion efficiency by 40% (relative). Importantly, the SWCNT lines reduce average series resistance by 44%, and consequently increase average fill factor by 24%.
Simulation of Water Transport Through Functionalized Single-Walled Carbon Nanotubes (SWCNTs)
Publisher: American Chemical Society (ACS)
Date: 15-11-2012
DOI: 10.1021/JP307679H
Nanocarbons for mesoscopic perovskite solar cells
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5TA00873E
Abstract: This review outlines the progress that has been reported on using carbon based nanostructures in perovskite solar cells and discusses their possible further applications to deliver high efficiency, long lifetime, low cost PSCs.
Mechanism of Laser Initiated Carbon Nanotube Ignition
Publisher: Wiley
Date: 24-07-2018
Preparation of Catalytic Substrates with Ordered Size of Iron Nanoparticles for Production Carbon Nanotubes
Publisher: IEEE
Date: 2006
Single Walled Carbon Nanotube Array as Working Electrode for Dye Solar Cells
Publisher: IEEE
Date: 02-2010
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End Date: 2016
Funder: Australian Research Council
View Funded ActivityBiodevice Fabrication Through Intelligent Surface Modification
Start Date: 2003
End Date: 2003
Funder: Australian Research Council
View Funded ActivityMaterials Engineering Solutions For Tomorrow's Water Resources
Start Date: 2010
End Date: 2012
Funder: Australian Research Council
View Funded ActivityMultifunctional Mixed Matrix Membranes Incorporating Aligned Carbon Nanotubes.
Start Date: 2008
End Date: 2010
Funder: Australian Research Council
View Funded ActivityCombining The Soft With The Hard: The Assembly Of Artificial Cell Membranes On Porous Semiconductors
Start Date: 2009
End Date: 2009
Funder: Australian Research Council
View Funded ActivityDevelopment Of An Implantable Device To Monitor Lactate Levels In Blood: Monitoring The Performance Of Australian Athletes Using Biosensor Technology
Start Date: 2007
End Date: 2009
Funder: Australian Research Council
View Funded ActivityARC Nanotechnology Research Network
Start Date: 2004
End Date: 2009
Funder: Australian Research Council
View Funded ActivityFunctional Biomass Carbons For Low-cost Sodium And Potassium-ion Batteries
Start Date: 2019
End Date: 2021
Funder: Australian Research Council
View Funded ActivityUltra High Vacuum Scanning Probe Microscope Facility
Start Date: 2010
End Date: 2010
Funder: Australian Research Council
View Funded ActivityDevelopment Of An Adjustable Porphyrin-based Molecular Platform For Nanotechnology Applications
Start Date: 2005
End Date: 2007
Funder: Australian Research Council
View Funded ActivityDiscovery Projects - Grant ID: DP150101354
Start Date: 2015
End Date: 12-2017
Amount: $409,300.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE160100033
Start Date: 02-2016
End Date: 12-2017
Amount: $500,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP100200102
Start Date: 01-2011
End Date: 08-2014
Amount: $430,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE140100040
Start Date: 10-2014
End Date: 12-2015
Amount: $1,375,000.00
Funder: Australian Research Council
View Funded ActivityDiscovery Projects - Grant ID: DP110103032
Start Date: 07-2011
End Date: 12-2016
Amount: $340,000.00
Funder: Australian Research Council
View Funded ActivityDiscovery Projects - Grant ID: DP0557818
Start Date: 02-2005
End Date: 12-2009
Amount: $210,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE0454249
Start Date: 2004
End Date: 12-2004
Amount: $157,004.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE0453973
Start Date: 2003
End Date: 12-2004
Amount: $696,093.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE0239035
Start Date: 2001
End Date: 12-2002
Amount: $900,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE150100040
Start Date: 2015
End Date: 12-2016
Amount: $330,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE130100038
Start Date: 10-2013
End Date: 10-2014
Amount: $450,000.00
Funder: Australian Research Council
View Funded ActivityDiscovery Projects - Grant ID: DP0556313
Start Date: 01-2005
End Date: 12-2008
Amount: $410,000.00
Funder: Australian Research Council
View Funded ActivityDiscovery Projects - Grant ID: DP200101217
Start Date: 03-2020
End Date: 04-2024
Amount: $660,000.00
Funder: Australian Research Council
View Funded ActivityDiscovery Projects - Grant ID: DP160101301
Start Date: 2016
End Date: 12-2019
Amount: $479,300.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP180100429
Start Date: 10-2019
End Date: 12-2023
Amount: $424,554.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE100100146
Start Date: 2010
End Date: 12-2010
Amount: $800,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE130100119
Start Date: 2013
End Date: 12-2014
Amount: $420,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP100100272
Start Date: 2010
End Date: 12-2014
Amount: $119,000.00
Funder: Australian Research Council
View Funded ActivitySpecial Research Initiatives - Grant ID: SR0354583
Start Date: 06-2004
End Date: 12-2004
Amount: $10,000.00
Funder: Australian Research Council
View Funded ActivityLinkage - International - Grant ID: LX0989444
Start Date: 2009
End Date: 12-2010
Amount: $110,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP0775464
Start Date: 10-2007
End Date: 09-2011
Amount: $255,000.00
Funder: Australian Research Council
View Funded ActivityDiscovery Projects - Grant ID: DP0878183
Start Date: 02-2008
End Date: 03-2012
Amount: $328,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE0560716
Start Date: 05-2005
End Date: 12-2006
Amount: $864,610.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP100100616
Start Date: 11-2010
End Date: 03-2015
Amount: $896,251.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE220100034
Start Date: 2022
End Date: 12-2023
Amount: $817,476.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP160100071
Start Date: 06-2017
End Date: 06-2020
Amount: $300,000.00
Funder: Australian Research Council
View Funded ActivityResearch Networks - Grant ID: RN0459611
Start Date: 07-2004
End Date: 12-2010
Amount: $1,900,000.00
Funder: Australian Research Council
View Funded Activity