ARDC Research Link Australia

Publication

Publisher: Royal Society of Chemistry (RSC)

Publisher: Royal Society of Chemistry

Date: 2018

DOI: 10.1039/9781788010160-FP007

Publication

Rational Design of Photonic Dust from Nanoporous Anodic Alumina Films: A Versatile Photonic Nanotool for Visual Sensing

Publisher: Springer Science and Business Media LLC

Date: 06-08-2015

DOI: 10.1038/SREP12893

Abstract: Herein, we present a systematic study on the development, optimisation and applicability of interferometrically coloured distributed Bragg reflectors based on nanoporous anodic alumina (NAA-DBRs) in the form of films and nanoporous microparticles as visual/colorimetric analytical tools. Firstly, we synthesise a complete palette of NAA-DBRs by galvanostatic pulse anodisation approach, in which the current density is altered in a periodic fashion in order to engineer the effective medium of the resulting photonic films in depth. NAA-DBR photonic films feature vivid colours that can be tuned across the UV-visible-NIR spectrum by structural engineering. Secondly, the effective medium of the resulting photonic films is assessed systematically by visual analysis and reflectometric interference spectroscopy (RIfS) in order to establish the most optimal nanoporous platforms to develop visual/colorimetric tools. Then, we demonstrate the applicability of NAA-DBR photonic films as a chemically selective sensing platform for visual detection of mercury(II) ions. Finally, we generate a new nanomaterial, so-called photonic dust, by breaking down NAA-DBRs films into nanoporous microparticles. The resulting microparticles (μP-NAA-DBRs) display vivid colours and are sensitive towards changes in their effective medium, opening new opportunities for developing advanced photonic nanotools for a broad range of applications.

Publication

Publisher: Wiley

Date: 12-2021

DOI: 10.1002/ADFM.202007356

Publication

Polymeric micelles in porous and nanotubular implants as a new system for extended delivery of poorly soluble drugs

Publisher: Royal Society of Chemistry (RSC)

Date: 2011

DOI: 10.1039/C0JM04307A

Publication

Graphene Oxide: A New Carrier for Slow Release of Plant Micronutrients

Publisher: American Chemical Society (ACS)

Publisher: Bentham Science Publishers Ltd.

Date: 12-2011

DOI: 10.2174/1876402911103040277

Publication

New insights on energetic properties of graphene oxide (GO) materials and their safety and environmental risks

Publisher: Elsevier BV

Date: 11-2022

DOI: 10.1016/J.SCITOTENV.2022.157743

Abstract: Graphene oxide (GO) has been recognized as a thermally unstable and energetic material, but surprisingly its environmental and safety risks were not fully explored, defined, and regulated. In this study, systematic explosivity and flammability characterizations of commercial GO materials were conducted to evaluate the influence of key parameters such as physical forms (paste, powders, films, and aerogels), temperature, heating rate, mass, and heating environment, as well as their potential safety and environmental impacts. Results based on thermogravimetric analysis (TGA) showed that GO in paste and powder forms have lower temperature thresholds (>180-192 °C) to initiate micro-explosions compared to GO film and aerogels (> 205 °C and 213 °C) regardless of the environment (inert, air, or oxygen). The observed explosive behavior can be explained by thermal runaway reactions as a result of thermal deoxygenation and decomposition of oxygen functional groups. Flammability rating and limiting oxygen index (LOI) results confirmed that GO films are flammable materials that can spontaneously propagate flame in a low oxygen environment (~11 %). These results provided new insights about potential safety and environmental risks of GO materials, which somehow were not considered, suggesting urgent actions to improve current safety protocols for labeling, handling, transporting, and storage practices from manufacturers to the end-users.

Publication

Highly biocompatible carbon nanocapsules derived from plastic waste for advanced cancer therapy

Publisher: Elsevier BV

Date: 10-2017

DOI: 10.1016/J.JDDST.2017.08.007

Publication

Publisher: American Chemical Society (ACS)

Date: 30-04-2018

DOI: 10.1021/ACSANM.8B00255

Publication

β‐Amyloid protein oligomers induced by metal ions and acid pH are distinct from those generated by slow spontaneous ageing at neutral pH

Publisher: Wiley

Date: 16-10-2003

DOI: 10.1046/J.1432-1033.2003.03815.X

Abstract: Amyloid protein (Abeta1-40) aggregation and conformation was examined using native and sodium dodecyl sulfate olyacrylamide gel electrophoresis, and the results compared with those obtained by atomic force microscopy, and with Congo red binding, sedimentation and turbidity assays. The amount of Abeta aggregation measured was different, depending upon the method used. Incubation for 15 min at pH 5.0 or in the presence of Fe2+, Cu2+ or Zn2+ did not alter the level of Abeta oligomers observed on SDS and native gels. However, the slow aggregation of Abeta to form high molecular mass species over 5 days was inhibited. In contrast, when Abeta aggregation was monitored using a Congo red binding assay or sedimentation assay, a rapid increase in Abeta aggregation was observed after incubation for 15 min at pH 5.0, or in the presence of Fe2+, Cu2+ or Zn2+. The low pH-, Zn2+- or Cu2+-induced Abeta aggregation measured in a turbidity assay was reversible. In contrast, a considerable proportion of the Abeta aggregation measured by native and SDS/PAGE was stable. Atomic force microscopy studies showed that Abeta aged at pH 5.0 or in the presence of Zn2+ produced larger looser rod-shaped aggregates than at pH 7.4. Abeta that had been aged at pH 7.4 was more cytotoxic than Abeta aged at pH 5.0. Taken together, the results suggest that Abeta oligomerizes via two mutually exclusive mechanisms to form two different types of aggregates, which differ in their cytotoxic properties.

Publication

An overview of nanotoxicity and nanomedicine research: principles, progress and implications for cancer therapy

Publisher: Royal Society of Chemistry (RSC)

Date: 2015

DOI: 10.1039/C5TB00956A

Abstract: The studies of nanomaterial-based drug delivery and nanotoxicity are closely interconnected.

Publication

Electrostatic powder coatings of pristine graphene: A new approach for coating of granular and fibril substrates

Publisher: Elsevier BV

Date: 05-2018

DOI: 10.1016/J.APSUSC.2018.01.204

Publication

Nanoporous anodic aluminum oxide for chemical sensing and biosensors

Publisher: Elsevier BV

Date: 03-2013

DOI: 10.1016/J.TRAC.2012.11.007

Publication

3D bioprinting of cell-laden electroconductive MXene nanocomposite bioinks

Publisher: Royal Society of Chemistry (RSC)

Date: 2020

DOI: 10.1039/D0NR02581J

Abstract: MXenes, a new family of two-dimensional transition metal carbides/nitrides, have been exploited in 3D bioprinting owing to their outstanding properties such as a large specific surface area, high electrical conductivity, and biodegradability.

Publication

Titania nanotubes for local drug delivery from implant surfaces

Publisher: Springer International Publishing

Date: 2015

DOI: 10.1007/978-3-319-20346-1_10

Publication

Electrochemically produced graphene with ultra large particles enhances mechanical properties of Portland cement mortar

Publisher: Elsevier BV

Date: 02-2020

DOI: 10.1016/J.CONBUILDMAT.2019.117403

Publication

Graphene Aerogels Decorated with α-FeOOH Nanoparticles for Efficient Adsorption of Arsenic from Contaminated Waters

Publisher: American Chemical Society (ACS)

Date: 28-04-2015

DOI: 10.1021/ACSAMI.5B01624

Abstract: Arsenic (As) is the world's most hazardous chemical found in drinking water of many countries therefore, there is an urgent need for the development of low-cost adsorbents for its removal. Here, we report a highly versatile and synthetic route for the preparation of a three-dimensional (3D) graphene-iron oxide nanoparticle aerogel composite for the efficient removal of As from contaminated water. This unique three-dimensional (3D) interconnected network was prepared from natural graphite rocks with a simple reaction, without the use of harsh chemicals, which combines with the exfoliation of graphene oxide (GO) sheets via the reduction of ferrous ion to form a graphene aerogel composite decorated with iron oxide nanoparticles. The prepared adsorbent showed outstanding absorption performance for the removal of As from contaminated water, because of its high surface-to-volume ratio and characteristic pore network in the 3D architecture. The performed case study using real drinking water contaminated with As under batch conditions showed successful removal of arsenic to the concentration recommended by the World Health Organisation (WHO).

Publication

Core-shell nanostructured hybrid composites for volatile organic compound detection

Publisher: Informa UK Limited

Date: 08-2015

DOI: 10.2147/IJN.S88305

Publication

Bioinspired Microchip Nanoporous Interferometric Sensor for Sensing and Biosensing Applications

Publisher: Bentham Science Publishers Ltd.

Date: 12-2011

DOI: 10.2174/1876402911103040290

Publication

Publisher: SPIE

Date: 26-12-2008

DOI: 10.1117/12.808769

Publication

Green synthesis of three-dimensional hybrid N-doped ORR electro-catalysts derived from apricot sap

Publisher: MDPI AG

Date: 28-01-2018

DOI: 10.3390/MA11020205

Publication

Chemical Functionalization of Diatom Silica Microparticles for Adsorption of Gold (III) Ions

Publisher: American Scientific Publishers

Date: 12-2011

DOI: 10.1166/JNN.2011.5017

Abstract: Diatom silica microparticles from natural diatomaceous earth (DE) silica have been functionalized with 3-mercaptopropyltrimethoxysilane (MPTMS) and their application for adsorption of gold (III) ions from aqueous solutions is demonstrated. Fourier transform infrared spectroscopy (FTIR) and X-ray Photoelectron spectroscopy (XPS) analyses of the MPTMS modified diatom microparticles revealed that the silane layer with functional group (-SH) was successfully introduced to the diatom surface. The adsorption study of Au(III) ions using MPTMS-DE indicated that the process depends on initial gold (III) concentration and pH showing maximum adsorption capacity at pH = 3. The Au(III) adsorption kinetics results showed that the adsorption was very fast and followed a pseudo-second-order reaction model. The Langmuir model was used to provide a sound mechanistic basis for the theoretical of the adsorption equilibrium data. Gold recovery from MPTMS-DE structures was also investigated by using acidified thiourea solution and found to be high (> 95%). These results show that chemically modified DE microparticles can be used as a new, cost effective and environmentally benign adsorbent suitable for adsorption of gold metal ions from aqueous solutions.

Publication

Publisher: Elsevier BV

Date: 09-2020

DOI: 10.1016/J.COMPOSITESB.2020.108096

Publication

Radiofrequency-triggered release for on-demand delivery of therapeutics from titania nanotube drug-eluting implants

Publisher: Future Medicine Ltd

Date: 06-2014

DOI: 10.2217/NNM.13.93

Abstract: Aim: This study aimed to demonstrate radiofrequency (RF)-triggered release of drugs and drug carriers from drug-eluting implants using gold nanoparticles as energy transducers. Materials & methods: Titanium wire with a titania nanotube layer was used as an implant loaded with indomethacin and micelles (tocopheryl PEG succinate) as a drug and drug carrier model. RF signals were generated from a customized RF generator to trigger in vitro release. Results & discussion: Within 2.5 h, 18 mg (92%) of loaded drug and 14 mg (68%) of loaded drug carriers were released using short RF exposure (5 min), compared with 5 mg (31%) of drug and 2 mg (11%) of drug carriers without a RF trigger. Gold nanoparticles can effectively function as RF energy transducers inside titania nanotubes for rapid release of therapeutics at arbitrary times. Conclusion: The results of this study show that RF is a promising strategy for triggered release from implantable drug delivery systems where on-demand delivery of therapeutics is required. Original submitted 19 November 2012 Revised submitted 1 April 2013

Publication

Label-free reflectometric interference microchip biosensor based on nanoporous alumina for detection of circulating tumour cells

Publisher: Elsevier BV

Date: 05-2012

DOI: 10.1016/J.BIOS.2012.02.038

Abstract: In this report, a label-free reflectometric interference spectroscopy (RIfS) based microchip biosensor for the detection of circulating tumour cells (CTCs) is demonstrated. Highly ordered nanoporous anodic aluminium oxide (AAO) fabricated by electrochemical anodization of aluminium foil was used as the RIfS sensing platform. Biotinylated anti-EpCAM antibody that specifically binds to human cancer cells of epithelial origin such as pancreatic cancer cells (PANC-1) was covalently attached to the AAO surface through multiple surface functionalization steps. Whole blood or phosphate buffer saline spiked with low numbers of pancreatic cancer cells were successfully detected by specially designed microfluidic device incorporating an AAO RIfS sensor, without labour intensive fluorescence labelling and/or pre-enhancement process. Our results show that the developed device is capable of selectively detecting of cancer cells, within a concentrations range of 1000-100,000 cells/mL, with a detection limit of <1000 cells/mL, a response time of <5 min and s le volume of 50 μL of. The presented RIfS method shows considerable promise for translation to a rapid and cost-effective point-of-care diagnostic device for the detection of CTCs in patients with metastatic cancer.

Publication

Converging 2D Nanomaterials and 3D Bioprinting Technology: State‐of‐the‐Art, Challenges, and Potential Outlook in Biomedical Applications

Publisher: Wiley

Date: 09-2021

DOI: 10.1002/ADHM.202101439

Abstract: The development of next‐generation of bioinks aims to fabricate anatomical size 3D scaffold with high printability and biocompatibility. Along with the progress in 3D bioprinting, 2D nanomaterials (2D NMs) prove to be emerging frontiers in the development of advanced materials owing to their extraordinary properties. Harnessing the properties of 2D NMs in 3D bioprinting technologies can revolutionize the development of bioinks by endowing new functionalities to the current bioinks. First the main contributions of 2D NMS in 3D bioprinting technologies are categorized here into six main classes: 1) reinforcement effect, 2) delivery of bioactive molecules, 3) improved electrical conductivity, 4) enhanced tissue formation, 5) photothermal effect, 6) and stronger antibacterial properties. Next, the recent advances in the use of each certain 2D NMs (1) graphene, 2) nanosilicate, 3) black phosphorus, 4) MXene, 5) transition metal dichalcogenides, 6) hexagonal boron nitride, and 7) metal–organic frameworks) in 3D bioprinting technology are critically summarized and evaluated thoroughly. Third, the role of physicochemical properties of 2D NMSs on their cytotoxicity is uncovered, with several representative ex les of each studied 2D NMs. Finally, current challenges, opportunities, and outlook for the development of nanocomposite bioinks are discussed thoroughly.

Publication

Graphene oxide decorated diatom silica particles as new nano-hybrids: towards smart natural drug microcarriers

Publisher: Royal Society of Chemistry (RSC)

Date: 2013

DOI: 10.1039/C3TB21051K

Publication

Revealing the dependence of the physiochemical and mechanical properties of cement composites on graphene oxide concentration

Publisher: Royal Society of Chemistry (RSC)

Date: 2017

DOI: 10.1039/C7RA10066C

Abstract: This paper presents a comprehensive study to evaluate the influence of graphene oxide (GO) concentration on the physiochemical and mechanical properties of cement mortar composites.

Publication

New optofluidic based lab-on-a-chip device for the real-time fluoride analysis

Publisher: Elsevier BV

Date: 05-2021

DOI: 10.1016/J.ACA.2021.338439

Publication

Natural high-porous diatomaceous-earth based self-floating aerogel for efficient solar steam power generation

Publisher: Elsevier BV

Date: 08-2022

DOI: 10.1016/J.GEE.2022.08.001

Publication

Coupling Natural Halloysite Nanotubes and Bimetallic Pt–Au Alloy Nanoparticles for Highly Efficient and Selective Oxidation of 5-Hydroxymethylfurfural to 2,5-Furandicarboxylic Acid

Publisher: American Chemical Society (ACS)

Date: 11-01-2022

DOI: 10.1021/ACSAMI.1C18788

Abstract: The aerobic oxidation of 5-hydroxymethylfurfural (HMF), a key platform compound derived from biomass, to 2,5-furandicarboxylic acid (FDCA) is a highly important reaction in the production of green and sustainable chemicals. Here, we developed a highly efficient and stable halloysite-supported Pt-Au alloy catalyst for the selective oxidation of HMF to FDCA. The catalyst was synthesized through the organosilane functionalization of halloysite nanotubes, followed by the in situ formation and dispersion of Pt-Au alloy nanoparticles on the internal and external surfaces of nanotubes. The composition, morphology, and structure of the prepared catalyst were characterized. The catalyst with the optimal composition of Pt/Au molar ratio of 1/4 and metal loading of 1.5 wt % exhibited outstanding catalytic activity for the oxidation of HMF to FDCA using O

Publication

Publisher: Elsevier BV

Date: 12-2018

DOI: 10.1016/J.RINP.2018.09.049

Publication

Alzheimer's Disease Therapeutics: New Approaches to an Ageing Problem

Publisher: Wiley

Date: 04-2004

DOI: 10.1080/15216540410001709211

Abstract: Abnormal proteinaceous deposits are found in the brain of patients with many different neurodegenerative diseases. In many of these diseases, the production of the deposits is probably associated with disease pathogenesis. In Alzheimer's disease (AD), the amyloid protein (A beta), is produced by the action of enzymes known as secretases, which cleave the beta-amyloid protein precursor. A beta is secreted from cells in the brain, after which it oligomerizes and is deposited in the extracellular compartment of the brain to form amyloid plaques and amyloid angiopathy. Targeting the production of A beta and its aggregation is now a key strategy in the development of novel therapeutic agents for the treatment of AD. This review examines the potential of immunization strategies, cholesterol-lowering drugs, protease inhibitors and nicotinic drugs for the treatment of AD.

Publication

All‐in‐One Bioinspired Multifunctional Graphene Biopolymer Foam for Simultaneous Removal of Multiple Water Pollutants

Publisher: Wiley

Date: 09-08-2020

DOI: 10.1002/ADMI.202000664

Publication

Versatile gradients of chemistry, bound ligands and nanoparticles on alumina nanopore arrays

Publisher: IOP Publishing

Publisher: Royal Society of Chemistry (RSC)

Date: 2013

DOI: 10.1039/C3RA41889H

Publication

Potential of zinc-loaded graphene oxide and arbuscular mycorrhizal fungi to improve the growth and zinc nutrition of Hordeum vulgare and Medicago truncatula

Publisher: Elsevier BV

Date: 06-2020

DOI: 10.1016/J.APSOIL.2019.103464

Publication

Publisher: Elsevier

Date: 2017

DOI: 10.1016/B978-0-12-409547-2.12634-4

Publication

Glypican-based drug releasing titania implants to regulate BMP2 bioactivity as a potential approach for craniosynostosis therapy

Publisher: Elsevier BV

Publisher: Elsevier BV

Date: 12-2002

DOI: 10.1016/S1388-2481(02)00496-4

Publication

Efficient photothermal deicing employing superhydrophobic plasmonic MXene composites

Publisher: Springer Science and Business Media LLC

Date: 09-09-2022

DOI: 10.1007/S42114-022-00549-5

Publication

Publisher: Royal Society of Chemistry (RSC)

Date: 2012

DOI: 10.1039/C2JM16819G

Publication

Nanoengineered drug releasing aluminium wire implants: a model study for localized bone therapy

Publisher: Royal Society of Chemistry (RSC)

Date: 2015

DOI: 10.1039/C5TB00150A

Abstract: A nanoengineered drug releasing aluminium wire implant has been developed and inserted into viable bone by a needle puncturing approach to directly deliver therapeutics inside the bone.

Publication

A facile synthesis procedure for sulfonated aniline oligomers with distinct microstructures

Publisher: MDPI AG

Date: 18-09-2018

DOI: 10.3390/MA11091755

Abstract: Well-defined sulfonated aniline oligomer (SAO) microstructures with rod and flake morphologies were successfully synthesized using an aniline and oxidant with a molar ratio of 10:1 in ethanol and acidic conditions (pH 4.8). The synthesized oligomers showed excellent dispersibility and assembled as well-defined structures in contrast to the shapeless aggregated material produced in a water medium. The synergistic effects among the monomer concentration, oxidant concentration, pH, and reaction medium are shown to be controlling parameters to generate SAO microstructures with distinct morphologies, whether micro sheets or micro rods.

Publication

Complex gold nanostructures derived by templating from diatom frustules

Publisher: Royal Society of Chemistry (RSC)

Date: 2005

DOI: 10.1039/B508733C

Abstract: Diatom frustules have been used for the first time as templates for the fabrication of gold nanostructures high-precision replicas featuring complex three-dimensional gold nanostructures from the nano- to the microscale were achieved.

Publication

Nanodiamonds and their surface modification strategies for drug delivery applications

Publisher: Elsevier BV

Date: 12-2020

DOI: 10.1016/J.JDDST.2020.101993

Publication

Graphene and Hexagonal Boron Nitride in Molybdenum Disulfide/Epoxy Composites for Significant X-ray Shielding Enhancement

Publisher: American Chemical Society (ACS)

Date: 19-08-2022

DOI: 10.1021/ACSANM.2C03292

Publication

α7‐Nicotinic acetylcholine receptors mediate an Aβ₁₋₄₂‐induced increase in the level of acetylcholinesterase in primary cortical neurones

Publisher: Wiley

Date: 11-02-2004

DOI: 10.1046/J.1471-4159.2003.02296.X

Abstract: The beta-amyloid protein (Abeta) is the major protein component of amyloid plaques found in the Alzheimer brain. Although there is a loss of acetylcholinesterase (AChE) from both cholinergic and non-cholinergic neurones in the brain of Alzheimer patients, the level of AChE is increased around amyloid plaques. Previous studies using P19 cells in culture and transgenic mice which overexpress human Abeta have suggested that this increase may be due to a direct action of Abeta on AChE expression in cells adjacent to amyloid plaques. The aim of the present study was to examine the mechanism by which Abeta increases levels of AChE in primary cortical neurones. Abeta1-42 was more potent than Abeta1-40 in its ability to increase AChE in primary cortical neurones. The increase in AChE was unrelated to the toxic effects of the Abeta peptides. The effect of Abeta1-42 on AChE was blocked by inhibitors of alpha7 nicotinic acetylcholine receptors (alpha7 nAChRs) as well as by inhibitors of L- or N-type voltage-dependent calcium channels (VDCCs), whereas agonists of alpha7 nAChRs (choline, nicotine) increased the level of AChE. The results demonstrate that the effect of Abeta1-42 on AChE is due to an agonist effect of Abeta1-42 on the alpha7 nAChR.

Publication

Publisher: Elsevier BV

Date: 09-2016

DOI: 10.1016/J.CARBON.2016.05.043

Publication

Controlled release and bioactivity of the monoclonal antibody rituximab from a porous matrix: a potential in situ therapeutic device

Publisher: Elsevier BV

Date: 09-2014

DOI: 10.1016/J.MATLET.2014.05.110

Publication

Cross-overlapped flat-silver/hexagonal boron nitride for translucent heat-reflective coatings

Publisher: Elsevier BV

Date: 09-2020

DOI: 10.1016/J.APMT.2020.100764

Publication

Carbon nanotube-nanoporous anodic alumina composite membranes with controllable inner diameters and surface chemistry: Influence on molecular transport and chemical selectivity

Publisher: Elsevier BV

Date: 11-2015

DOI: 10.1016/J.CARBON.2015.05.090

Publication

Publisher: Wiley

Date: 07-08-2007

DOI: 10.1002/ADFM.200600872

Publication

Nanoporous Alumina as an Intelligent Nanomaterial for Biomedical Applications

Publisher: Wiley

Date: 17-10-2016

DOI: 10.1002/9781119242628.CH6

Publication

Graphene oxide as an antimicrobial agent can extend the vase life of cut flowers

Publisher: Springer Science and Business Media LLC

Date: 16-06-2018

DOI: 10.1007/S12274-018-2115-8

Publication

Publisher: Royal Society of Chemistry (RSC)

Date: 2006

DOI: 10.1039/B611016A

Publication

Perspectives on plasma-assisted synthesis of N-doped nanoparticles as nanopesticides for pest control in crops

Publisher: Royal Society of Chemistry (RSC)

Date: 2020

DOI: 10.1039/D0RE00069H

Abstract: Green plasma-based technology production of N-doped NPs for a new agri-tech revolution in pest control.

Publication

In vivo toxicological assessment of electrochemically engineered anodic alumina nanotubes: a study of biodistribution, subcutaneous implantation and intravenous injection

Publisher: Royal Society of Chemistry (RSC)

Date: 2017

DOI: 10.1039/C7TB00222J

Abstract: First pilot toxicity study on anodic alumina nanotubes in immune-competent murine models.

Publication

Bioinert Anodic Alumina Nanotubes for Targeting of Endoplasmic Reticulum Stress and Autophagic Signaling: A Combinatorial Nanotube-Based Drug Delivery System for Enhancing Cancer Therapy

Publisher: American Chemical Society (ACS)

Date: 12-2015

DOI: 10.1021/ACSAMI.5B07557

Abstract: Although nanoparticle-based targeted delivery systems have gained promising achievements for cancer therapy, the development of sophisticated strategies with effective combinatorial therapies remains an enduring challenge. Herein, we report the fabrication of a novel nanomaterial, so-called anodic alumina nanotubes (AANTs) for proof-of-concept cancer therapy by targeting cell signaling networks. This strategy is to target autophagic and endoplasmic reticulum (ER) stress signaling by using thapsigargin (TG)-loaded AANTs cotreated with an autophagy inhibitor 3-methyladenine (3-MA). We first show that AANTs are nontoxic and can activate autophagy in different cell types including human fibroblast cells (HFF), human monocyte cells (THP-1), and human breast cancer cells (MDA-MB 231-TXSA). Treatment with 3-MA at a nontoxic dose reduced the level of autophagy induced by AANTs, and consequently sensitized breast cancer cells to AANTs-induced cellular stresses. To target autophagic and ER stress signaling networking, breast cancer cells were treated with 3-MA together with AANTs loaded with the prototype ER stress inducer TG. We demonstrated that 3-MA enhanced the cancer cell killing effect of AANTs loaded with TG. This effect was associated with enhanced ER stress signaling due to the combination effect of TG and 3-MA. These findings not only demonstrate the excellent biocompatibility of AANTs as novel biomaterials but also provide new opportunities for developing ER- and autophagy-targeted delivery systems for future clinical cancer therapy.

Publication

Robust Superhydrophobic Graphene-Based Composite Coatings with Self-Cleaning and Corrosion Barrier Properties

Publisher: American Chemical Society (ACS)

Date: 17-12-2015

DOI: 10.1021/ACSAMI.5B09611

Abstract: Superhydrophobic surfaces for self-cleaning applications often suffer from mechanical instability and do not function well after abrasion/scratching. To address this problem, we present a method to prepare graphene-based superhydrophobic composite coatings with robust mechanical strength, self-cleaning, and barrier properties. A suspension has been formulated that contains a mixture of reduced graphene oxide (rGO) and diatomaceous earth (DE) modified with polydimethylsiloxane (PDMS) that can be applied on any surface using common coating methods such as spraying, brush painting, and dip coating. Inclusion of TiO2 nanoparticles to the formulation shows further increase in water contact angle (WCA) from 159 ± 2° to 170 ± 2° due to the structural improvement with hierarchical surface roughness. Mechanical stability and durability of the coatings has been achieved by using a commercial adhesive to bond the superhydrophobic "paint" to various substrates. Excellent retention of superhydrophobicity was observed even after sandpaper abrasion and crosscut scratching. A potentiodynamic polarization study revealed excellent corrosion resistance (96.78%) properties, and an acid was used to provide further insight into coating barrier properties. The ease of application and remarkable properties of this graphene-based composite coating show considerable potential for broad application as a self-cleaning and protective layer.

Publication

Publisher: MDPI AG

Date: 27-12-2010

DOI: 10.3390/MEMBRANES1010037

Publication

Self-ordered nanopore and nanotube platforms for drug delivery applications

Publisher: Informa Healthcare

Date: 27-10-2009

DOI: 10.1517/17425240903300857

Abstract: The application of nanotechnology to medicine termed as 'nanomedicine' is recognised as an emerging field with enormous potential for developing new therapeutic concepts. A range of nanoscale materials have been explored in the last few years for drug delivery to address the problems associated with conventional drug therapies such as limited drug solubility, poor biodistribution, lack of selectivity and unfavourable pharmacokinetics. Among them, nanoporous materials with ordered and controlled pore structures, high surface area and pore volume, attracted great attention, particularly for implantable drug delivery systems. This review presents the recent progress in this field focused on electrochemically engineered nanopores/nanotube materials such as nanoporous alumina and nanotubular titania. The basic concept of fabrication of these unique materials using a self-ordering process, description of their structural properties, biocompatibility and recent applications for therapeutic implants is presented.

Publication

Blood–brain barrier: a real obstacle for therapeutics

Publisher: Informa UK Limited

Date: 07-2012

DOI: 10.2147/IJN.S33837

Publication

Converting Chrysotile Nanotubes into Magnesium Oxide and Hydroxide Using Lanthanum Oxycarbonate Hybridization and Alkaline Treatment for Efficient Phosphate Adsorption

Publisher: American Chemical Society (ACS)

Date: 09-2022

DOI: 10.1021/ACS.INORGCHEM.2C02052

Abstract: Magnesium oxide and hydroxide nanomaterials comprise a class of promising advanced functional metal nanomaterials whose use in environmental and material applications is increasing. Several strategies to synthesize these nanomaterials have been described but are unsustainable and uneconomic. This work reports on a processing strategy that turns natural magnesium-rich chrysotile into magnesium oxide and hydroxide nanoparticles via nanoparticle hybridization and an alkaline process while enabling La-based nanoparticles to coat the chrysotile nanotube surfaces. The adsorbent's resulting hybrid nanostructure had an outstanding capacity for phosphate uptake (135.2 mg P g

Publication

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

Publication

Publisher: Elsevier BV

Date: 03-2011

DOI: 10.1016/J.TRAC.2010.11.010

Publication

Publisher: Elsevier BV

Date: 07-2021

DOI: 10.1016/J.CARBPOL.2021.117989

Publication

Experimental Study on Glass and Polymers: Determining the Optimal Material for Potential Use in Terahertz Technology

Publisher: Institute of Electrical and Electronics Engineers (IEEE)

Date: 2020

DOI: 10.1109/ACCESS.2020.2996278

Publication

In situ monitored engineering of inverted nanoporous anodic alumina funnels: On the precise generation of 3D optical nanostructures

Publisher: Royal Society of Chemistry (RSC)

Date: 2014

DOI: 10.1039/C4NR01422G

Abstract: Inverted nanoporous anodic alumina funnels (INAAFs) are produced by in-depth electrochemical/thermal engineering of nanoporous anodic alumina.

Publication

Multithiol functionalized graphene bio-sponge via photoinitiated thiol-ene click chemistry for efficient heavy metal ions adsorption

Publisher: Elsevier BV

Date: 09-2020

DOI: 10.1016/J.CEJ.2020.124965

Publication

Diatom culture media contain extracellular silica nanoparticles which form opalescent films

Publisher: SPIE

Date: 26-12-2008

DOI: 10.1117/12.811321

Publication

Role of Aβ and the α7 nicotinic acetylcholine receptor in regulating synaptic plasticity in Alzheimer's disease

Publisher: Springer Science and Business Media LLC

Date: 09-2003

DOI: 10.1007/BF02442570

Publication

Advancing Dielectric and Ferroelectric Properties of Piezoelectric Polymers by Combining Graphene and Ferroelectric Ceramic Additives for Energy Storage Applications

Publisher: MDPI AG

Date: 28-08-2018

DOI: 10.3390/MA11091553

Abstract: To address the limitations of piezoelectric polymers which have a low dielectric constant andto improve their dielectric and ferroelectric efficiency for energy storage applications, we designed and characterized a new hybrid composite that contains polyvinylidene fluoride as a dielectric polymer matrix combined with graphene platelets as a conductive and barium titanite as ceramic ferroelectric fillers. Different graphene/barium titanate olyvinylidene fluoride nanocomposite films were synthesized by changing the concentration of graphene and barium titanate to explore the impact of each component and their potential synergetic effect on dielectric and ferroelectric properties of the composite. Results showed that with an increase in the barium titanate fraction, dielectric efficiency ofthe nanocomposite was improved. Among all synthesized nanocomposite films, graphene/barium titanate olyvinylidene fluoride nanocomposite in the weight ratio of 0.15:0.5:1 exhibited thehighest dielectric constant of 199 at 40 Hz, i.e., 15 fold greater than that of neat polyvinylidene fluoride film at the same frequency, and possessed a low loss tangent of 0.6. However, AC conductivity and ferroelectric properties of graphene/barium titanate olyvinylidene fluoride nanocomposite films were enhanced with an increase in the graphene weight fraction. Graphene/barium titanate olyvinylidene fluoride nanocomposite films with a weight ratio of 0.2:0.1:1 possessed a high AC conductivity of 1.2 × 10−4 S/m at 40 Hz. While remanent polarization, coercive field, and loop area of the same s le were 0.9 μC/cm2, 9.78 kV/cm, and 24.5 μC/cm2·V, respectively. Our results showed that a combination of graphene and ferroelectric ceramic additives are an excellent approach to significantly advance the performance of dielectric and ferroelectric properties of piezoelectric polymers for broad applications including energy storage.

Publication

Titania nanotube-based protein delivery system to inhibit cranial bone regeneration in Crouzon model of craniosynostosis

Publisher: Informa UK Limited

Date: 08-2019

DOI: 10.2147/IJN.S202090

Publication

Mixed-Mode Remediation of Cadmium and Arsenate Ions Using Graphene-Based Materials

Publisher: Wiley

Date: 10-08-2018

DOI: 10.1002/CLEN.201800073

Publication

Size- and shape-controlled synthesis of well-organised carbon nanotubes using nanoporous anodic alumina with different pore diameters

Publisher: Elsevier BV

Date: 04-2017

DOI: 10.1016/J.JCIS.2016.12.035

Abstract: This work aims at introducing the synthesis process of carbon nanotubes (CNTs) inside nanoporous anodic alumina (NAA) templates adopting a catalyst-free chemical vapor deposition (CVD) approach under different conditions. The nanotubular structure of NAA is prepared according to tow-step anodization process. This provides a unique platform to grow CNTs with precisely controlled geometric features. The structural features, crystalline structures and chemical composition of the resulting CNTs-NAA composites were systematically characterized using Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), High Resolution Transmission Electron Microscopy (HRTEM), X-ray Diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), Energy-dispersive X-ray spectroscopy (EDX), Fourier Transform Infrared Spectroscopy (FTIR) as well as Raman spectroscopy. Preparing the CNTs according to this template technique allows us to obtain nanotubes which are open at one/both end(s) with a uniform diameter (10-200nm) along the pore length (1-100μm) without using any metal catalyst.

Publication

Corrigendum to “Magnetic iron oxide nanoparticles decorated graphene for chemoresistive gas sensing: The particle size effects” [J. Colloid Interface Sci. 539 (2019) 315–325] (Journal of Colloid And Interface Science (2019) 539 (315–325), (S0021979718315182), (10.1016/j.jcis.2018.12.077))

Publisher: Elsevier BV

Date: 04-2022

DOI: 10.1016/J.JCIS.2021.12.173

Publication

Influence of Surface Topography on Alkanethiol SAMs Assembled from Solution and by Microcontact Printing

Publisher: American Chemical Society (ACS)

Date: 24-04-2001

DOI: 10.1021/LA001462T

Publication

Publisher: Elsevier BV

Date: 11-2013

DOI: 10.1016/J.CARBON.2013.07.003

Publication

Improved preparation of MoS2/graphene composites and their inks for supercapacitors applications

Publisher: Elsevier BV

Date: 12-2020

DOI: 10.1016/J.MSEB.2020.114700

Publication

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.

Publication

Reflectometric interference biosensing using nanopores: integration into microfluidics

Publisher: SPIE

Date: 21-12-2011

DOI: 10.1117/12.903217

Publication

High-efficiency microwave graphene antenna

Publisher: IEEE

Date: 07-2017

DOI: 10.1109/APUSNCURSINRSM.2017.8072201

Publication

Tuning drug loading and release properties of diatom silica microparticles by surface modifications

Publisher: Elsevier BV

Date: 02-2013

DOI: 10.1016/J.IJPHARM.2012.12.012

Abstract: Diatomaceous earth (DE), or diatomite silica microparticles originated from fossilized diatoms are a potential substitute for its silica-based synthetic counterparts to address limitations in conventional drug delivery. This study presents the impact of engineered surface chemistry of DE microparticles on their drug loading and release properties. Surface modifications with four silanes, including 3-aminopropyltriethoxy silane (APTES), methoxy-poly-(ethylene-glycol)-silane (mPEG-silane), 7-octadecyltrichlorosilane (OTS), 3-(glycidyloxypropyl)trimethoxysilane (GPTMS) and two phosphonic acids, namely 2-carboxyethyl-phosphonic acid (2 CEPA) and 16-phosphono-hexadecanoic acid (16 PHA) were explored in order to tune drug loading and release characteristics of water insoluble (indomethacin) and water soluble drugs (gentamicin). Successful grafting of these functional groups with different interfacial properties was confirmed using X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR). Thermogravimetric analysis (TGA) was applied to determine the amount of loaded drugs and UV-spectrophotometry to analyse in vitro drug release from modified DE microparticles. Differences in drug release time (13-26 days) and loading capacity (14-24%) were observed depending on functional groups on the surface of DE microparticles. It was found that hydrophilic surfaces, due to the presence of polar carboxyl, amine or hydrolyzed epoxy group, favor extended release of indomethacin, while the hydrophobic DE surface modified by organic hydrocarbons gives a better sustained release profile for gentamicin. This work demonstrates that by changing surface functionalities on DE microparticles, it is possible to tune their drug loading and release characteristics for both hydrophobic and hydrophilic drugs and therefore achieve optimal drug delivery performance.

Publication

Publisher: Elsevier BV

Date: 09-2014

DOI: 10.1016/J.ELECTACTA.2014.07.023

Publication

Silicon diatom frustules as nanostructured photoelectrodes

Publisher: Royal Society of Chemistry (RSC)

Publisher: American Chemical Society (ACS)

Date: 21-04-2023

DOI: 10.1021/ACS.JPCLETT.3C00336

Publication

Graphene and molybdenum disulphide hybrids for energy applications: an update

Publisher: Elsevier BV

Date: 06-2020

DOI: 10.1016/J.MTADV.2019.100053

Publication

Outstanding adsorption performance of graphene–carbon nanotube aerogels for continuous oil removal

Publisher: Elsevier BV

Date: 12-2014

DOI: 10.1016/J.CARBON.2014.08.092

Publication

Publisher: Royal Society of Chemistry (RSC)

Date: 2006

DOI: 10.1039/B600073H

Publication

Nanoengineered drug-releasing Ti wires as an alternative for local delivery of chemotherapeutics in the brain

Publisher: Informa UK Limited

Date: 04-2012

DOI: 10.2147/IJN.S29917

Publication

Publisher: Elsevier BV

Date: 07-2014

DOI: 10.1016/J.BIOMATERIALS.2014.03.059

Abstract: Here, we report a study on the biocompatibility, cell uptake and in vitro delivery of tumor necrosis factor-related apoptosis-inducing ligand (Apo2L/TRAIL) by new nano-carriers called anodic alumina nanotubes (AANTs) for potential cancer therapy. AANTs were electrochemically engineered by a unique pulse anodization process, which enables precise control of the nanotube geometry, and used here as nano-carriers for drug delivery. In vitro cytotoxicity and cell uptake of AANTs was assessed using MDA-MB231-TXSA human breast cancer cells and mouse RAW 264.7 macrophage cells. AANTs exhibited excellent biocompatibility in both cell lines over a time course of five days even at a maximum concentration of AANTs of 100 μgmL(-1). Transmission electron microscopy and fluorescence microscopy confirmed a significant uptake of AANTs by RAW 264.7 cells and breast cancer cells. AANTs loaded with the pro-apoptotic protein Apo2L/TRAIL showed exceptional loading capacity (104 ± 14.4 μgmg(-1) of AANTs) and demonstrated significant decrease in viability of MDA-MB231-TXSA cancer cells due to apoptosis induction. These results demonstrate that AANTs are promising nano-carriers for drug delivery applications.

Publication

Geospatial immune variability illuminates differential evolution of lung adenocarcinoma

Publisher: Springer Science and Business Media LLC

Date: 27-05-2020

DOI: 10.1038/S41591-020-0900-X

Publication

Fractal Design for Advancing the Performance of Chemoresistive Sensors

Publisher: American Chemical Society (ACS)

Date: 13-10-2021

DOI: 10.1021/ACSSENSORS.1C01449

Publication

Graphene-Borate as an Efficient Fire Retardant for Cellulosic Materials with Multiple and Synergetic Modes of Action

Publisher: American Chemical Society (ACS)

Date: 10-03-2017

DOI: 10.1021/ACSAMI.7B00572

Abstract: To address high fire risks of flamable cellulosic materials, that can trigger easy combustion, flame propagation, and release of toxic gases, we report a new fire-retardant approach using synergetic actions combining unique properties of reduced graphene oxide (rGO) and hydrated-sodium metaborates (SMB). The single-step treatment of cellulosic materials by a composite suspension of rGO/SMB was developed to create a barrier layer on sawdust surface providing highly effective fire retardant protection with multiple modes of action. These performances are designed considering synergy between properties of hydrated-SMB crystals working as chemical heat-sink to slow down the thermal degradation of the cellulosic particles and gas impermeable rGO layers that prevents access of oxygen and the release of toxic volatiles. The rGO outer layer also creates a thermal and physical barrier by donating carbon between the flame and unburnt wood particles. The fire-retardant performance of developed graphene-borate composite and mechanism of fire protection are demonstrated by testing of different forms of cellulosic materials such as pine sawdust, particle-board, and fiber-based structures. Results revealed their outstanding self-extinguishing behavior with significant resistance to release of toxic and flammable volatiles suggesting rGO/SMB to be suitable alternative to the conventional toxic halogenated flame-retardant materials.

Publication

Atomic force microscopy (AFM) characterisation of the porous silica nanostructure of two centric diatoms

Publisher: Springer Science and Business Media LLC

Date: 06-12-2006

DOI: 10.1007/S10934-006-9009-Y

Publication

Platforms for controlled release of antibacterial agents facilitated by plasma polymerization

Publisher: IEEE

Date: 08-2010

DOI: 10.1109/IEMBS.2010.5626566

Publication

Biological response of human suture mesenchymal cells to Titania nanotube-based implants for advanced craniosynostosis therapy

Publisher: Elsevier BV

Date: 02-2017

DOI: 10.1016/J.COLSURFB.2016.11.019

Abstract: Titania nanotubes (TNTs) engineered on titanium (Ti) surfaces (i.e. TNT/Ti) and loaded with specific drugs have been recognised as a promising solution for localised therapeutic delivery to address several medical problems not feasible with conventional drug administration. We propose the use of TNT/Ti protein-releasing implants to treat paediatric craniofacial abnormality in craniosynostosis caused by premature fusion of cranial sutures. In this study, we have analysed the biological response of human suture mesenchymal cells (SMCs), extracted from two different patients undergoing craniofacial reconstruction surgery, at the TNT/Ti implant surface. The experimental groups included large-diameter TNT/Ti implants, with and without biopolymer surface coating (Chitosan and Pluronic-F127) while the controls comprised of flat Ti disc and tissue culture plastic. The non-loaded implant surfaces and the cellular interactions at the implant-cell interface were characterised using scanning electron microscopy (SEM). The SMC adhesion, viability and proliferation were determined by MTT assay and manual cell counting at day 1 and day 3 of cell incubation. SEM showed significant reduction in initial attachment and adhesion of SMCs at TNT-cell biointerface compared with the control Ti discs. Subsequent cell proliferation results also revealed a decrease in the number of viable cells on the TNT surfaces. The nanotopography and structural features along with the surface chemistry dictated the cellular response, with nanotubular surfaces (with and without polymer coating) impeding cell adhesion and proliferation. Our findings hold promise for the use of TNT-based cranial implants as a delivery system to prevent sutural bone growth for advanced craniosynostosis therapy.

Publication

Tuning MnO₂ to FeOOH replicas with bio-template 3D morphology as electrodes for high performance asymmetric supercapacitors

Publisher: Elsevier BV

Date: 08-2019

DOI: 10.1016/J.CEJ.2019.03.190

Publication

Publisher: American Chemical Society (ACS)

Pore opening detection for controlled dissolution of barrier oxide layer and fabrication of nanoporous alumina with through-hole morphology

Publisher: Elsevier BV

Date: 02-2009

DOI: 10.1016/J.MEMSCI.2008.11.033

Publication

Coupled dynamics of double beams reinforced with bidirectional functionally graded carbon nanotubes

Publisher: Elsevier BV

Date: 10-2022

DOI: 10.1016/J.ENGANABOUND.2022.06.023

Publication

Biodegradable and biocompatible graphene-based scaffolds for functional neural tissue engineering: A strategy approach using dental pulp stem cells and biomaterials

Publisher: Wiley

Date: 28-07-2021

DOI: 10.1002/BIT.27891

Abstract: Neural tissue engineering aims to restore the function of nervous system tissues using biocompatible cell‐seeded scaffolds. Graphene‐based scaffolds combined with stem cells deserve special attention to enhance tissue regeneration in a controlled manner. However, it is believed that minor changes in scaffold biomaterial composition, internal porous structure, and physicochemical properties can impact cellular growth and adhesion. The current work aims to investigate in vitro biological effects of three‐dimensional (3D) graphene oxide (GO)/sodium alginate (GOSA) and reduced GOSA (RGOSA) scaffolds on dental pulp stem cells (DPSCs) in terms of cell viability and cytotoxicity. Herein, the effects of the 3D scaffolds, coating conditions, and serum supplementation on DPSCs functions are explored extensively. Biodegradation analysis revealed that the addition of GO enhanced the degradation rate of composite scaffolds. Compared to the 2D surface, the cell viability of 3D scaffolds was higher ( p 0.0001), highlighting the optimal initial cell adhesion to the scaffold surface and cell migration through pores. Moreover, the cytotoxicity study indicated that the incorporation of graphene supported higher DPSCs viability. It is also shown that when the mean pore size of the scaffold increases, DPSCs activity decreases. In terms of coating conditions, poly‐ l ‐lysine was the most robust coating reagent that improved cell‐scaffold adherence and DPSCs metabolism activity. The cytotoxicity of GO‐based scaffolds showed that DPSCs can be seeded in serum‐free media without cytotoxic effects. This is critical for human translation as cellular transplants are typically serum‐free. These findings suggest that proposed 3D GO‐based scaffolds have favorable effects on the biological responses of DPSCs.

Publication

Chemical Functionalization of Inner Walls of Carbon Nanotubes with Long-Chain Aliphatic Amines

Publisher: American Scientific Publishers

Date: 05-2017

DOI: 10.1166/NNL.2017.2375

Publication

Date: 2023

DOI: 10.1039/D2NR05619D

Abstract: Magnetic extracellular vesicle (EV) enrichment using antibody conjugated bacteria-derived iron oxide nanowires coupled with mass spectrometry-based proteome profiling enables efficient EV subtype enrichment and reproducible proteomics.

Publication

Laminated antimonene as an alternative and efficient shielding strategy against X-ray radiation

Publisher: Elsevier BV

Date: 12-2022

DOI: 10.1016/J.APMT.2022.101566

Publication

Anodized 3D-printed titanium implants with dual micro- and nano-scale topography promote interaction with human osteoblasts and osteocyte-like cells

Publisher: Hindawi Limited

Date: 07-12-2016

DOI: 10.1002/TERM.2239

Abstract: The success of implantation of materials into bone is governed by effective osseointegration, requiring biocompatibility of the material and the attachment and differentiation of osteoblastic cells. To enhance cellular function in response to the implant surface, micro- and nano-scale topography have been suggested as essential. In this study, we present bone implants based on 3D-printed titanium alloy (Ti6Al4V), with a unique dual topography composed of micron-sized spherical particles and vertically aligned titania nanotubes. The implants were prepared by combination of 3D-printing and anodization processes, which are scalable, simple and cost-effective. The osseointegration properties of fabricated implants, examined using human osteoblasts, showed enhanced adhesion of osteoblasts compared with titanium materials commonly used as orthopaedic implants. Gene expression studies at early (day 7) and late (day 21) stages of culture were consistent with the Ti substrates inducing an osteoblast phenotype conducive to effective osseointegration. These implants with the unique combination of micro- and nano-scale topography are proposed as the new generation of multi-functional bone implants, suitable for addressing many orthopaedic challenges, including implant rejection, poor osseointegration, inflammation, drug delivery and bone healing. Copyright © 2016 John Wiley & Sons, Ltd.

Publication

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

DOI: 10.1016/J.ELECOM.2007.03.023

Publication

Chemodosimeter functionalized diatomaceous earth particles for visual detection and removal of trace mercury ions from water

Publisher: Elsevier BV

Date: 11-2017

DOI: 10.1016/J.CEJ.2017.06.138

Publication

Label-Free Real-Time Quantification of Enzyme Levels by Interferometric Spectroscopy Combined with Gelatin-Modified Nanoporous Anodic Alumina Photonic Films

Publisher: American Chemical Society (ACS)

Date: 13-08-2015

DOI: 10.1021/ACS.ANALCHEM.5B02225

Abstract: Herein, we present an interferometric sensor based on the combination of chemically functionalized nanoporous anodic alumina photonic films (NAA-PFs) and reflectometric interference spectroscopy (RIfS) aimed to detect trace levels of enzymes by selective digestion of gelatin. The fabrication and sensing performance of the proposed sensor were characterized in real-time by estimating the changes in effective optical thickness (i.e., sensing principle) of gelatin-modified NAA-PFs (i.e., sensing element) during enzymatic digestion. The working range (WR), sensitivity (S), low limit of detection (LLoD), and linearity (R(2)) of this enzymatic sensor were established by a series of experiments with different concentrations of gelatin (i.e., specific chemical sensing element) and trypsin (i.e., analyte), a model protease enzyme with relevant implications as a biomarker in the diagnosis of several diseases. The chemical selectivity of the sensor was demonstrated by comparison of gelatin digestion by other nonspecific enzyme models such as chymotrypsin and horseradish peroxidase. Furthermore, the role of the chemical sensing element (i.e., gelatin) was assessed by using hemoglobin instead of gelatin. Finally, we demonstrated that this sensor can be readily used to establish the kinetic parameters of enzymatic reactions. The obtained results revealed that the presented sensor has a promising potential to be used as a point-of-care system for fast detection of gastrointestinal diseases at early stages.

Publication

Fabrication and optimization of bilayered nanoporous anodic alumina structures as multi-point interferometric sensing platform

Publisher: MDPI AG

Date: 06-02-2018

DOI: 10.3390/S18020470

Publication

One step strategy for reduced graphene oxide/cobalt-iron oxide/polypyrrole nanocomposite preparation for high performance supercapacitor electrodes

Publisher: Elsevier BV

Date: 09-2022

DOI: 10.1016/J.ELECTACTA.2022.140883

Publication

Nanoporous Anodic Alumina for Drug Delivery and Biomedical Applications

Publisher: Springer International Publishing

Date: 2015

DOI: 10.1007/978-3-319-20334-8_11

Publication

Facile synthesis of ternary graphene nanocomposites with doped metal oxide and conductive polymers as electrode materials for high performance supercapacitors

Publisher: Springer Science and Business Media LLC

Date: 12-04-2019

DOI: 10.1038/S41598-019-41939-Y

Abstract: Supercapacitors (SCs) due to their high energy density, fast charge storage and energy transfer, long charge discharge curves and low costs are very attractive for designing new generation of energy storage devices. In this work we present a simple and scalable synthetic approach to engineer ternary composite as electrode material based on combination of graphene with doped metal oxides (iron oxide) and conductive polymer (polypyrrole) with aims to achieve supercapacitors with very high gravimetric and areal capacitances. In the first step a binary composite with graphene mixed with doped iron oxide (rGO/MeFe 2 O 4 ) (Me = Mn, Ni) was synthesized using new single step process with NaOH acting as a coprecipitation and GO reducing agent. This rGO/MnFe 2 O 4 composite electrode showed gravimetric capacitance of 147 Fg −1 and areal capacitance of 232 mFcm −2 at scan rate of 5 mVs −1 . In the final step a conductive polypyrrole was included to prepare a ternary composite graphene/metal doped iron oxide olypyrrole (rGO/MnFe 2 O 4 /Ppy) electrode. Ternary composite electrode showed significantly improved gravimetric capacitance and areal capacitance of 232 Fg −1 and 395 mFcm −2 respectively indicating synergistic impact of Ppy additives. The method is promising to fabricate advanced electrode materials for high performing supercapacitors combining graphene, doped iron oxide and conductive polymers.

Publication

Carbon Nanotubes as an Advanced Drug and Gene Delivery Nanosystem

Publisher: Bentham Science Publishers Ltd.

Date: 06-2011

DOI: 10.2174/157341311795542444

Publication

Gold nanotube membranes; Fabrication of controlled pore geometries and tailored surface chemistries

Publisher: IEEE

Date: 02-2010

DOI: 10.1109/ICONN.2010.6045191

Publication

Optimisation of reflective interferometric properties of nanoporous anodic aluminium oxide (AAO) for biosensing applications

Publisher: IEEE

Date: 12-2010

DOI: 10.1109/COMMAD.2010.5699781

Publication

Localized drug delivery of selenium (Se) using nanoporous anodic aluminium oxide for bone implants

Publisher: Royal Society of Chemistry (RSC)

Date: 2015

DOI: 10.1039/C5TB00125K

Abstract: Release behavior and cancer toxicity of different forms of Se loaded into nanoporous AAO were studied.

Publication

Publisher: Elsevier BV

Date: 05-2021

DOI: 10.1016/J.SAA.2021.119471

Publication

Engineering of new nanoscale materials from diatomaceous earth (DE)

Publisher: IEEE

Date: 02-2010

DOI: 10.1109/ICONN.2010.6045199

Publication

A Novel Fabrication Approach for Multifunctional Graphene-based Thin Film Nano-composite Membranes with Enhanced Desalination and Antibacterial Characteristics

Publisher: Springer Science and Business Media LLC

Date: 08-08-2017

DOI: 10.1038/S41598-017-07531-Y

Abstract: A practical fabrication technique is presented to tackle the trade-off between the water flux and salt rejection of thin film composite (TFC) reverse osmosis (RO) membranes through controlled creation of a thinner active selective polyamide (PA) layer. The new thin film nano-composite (TFNC) RO membranes were synthesized with multifunctional poly tannic acid-functionalized graphene oxide nanosheets (pTA-f-GO) embedded in its PA thin active layer, which is produced through interfacial polymerization. The incorporation of pTA-f-GOL into the fabricated TFNC membranes resulted in a thinner PA layer with lower roughness and higher hydrophilicity compared to pristine membrane. These properties enhanced both the membrane water flux (improved by 40%) and salt rejection (increased by 8%) of the TFNC membrane. Furthermore, the incorporation of biocidal pTA-f-GO nanosheets into the PA active layer contributed to improving the antibacterial properties by 80%, compared to pristine membrane. The fabrication of the pTA-f-GO nanosheets embedded in the PA layer presented in this study is a very practical, scalable and generic process that can potentially be applied in different types of separation membranes resulting in less energy consumption, increased cost-efficiency and improved performance.

Publication

Which parameters affect the response of the channel biosensor?

Publisher: Wiley

Date: 03-2003

DOI: 10.1002/ELAN.200390022

Publication

Lightweight Bismuth Titanate (Bi₄Ti₃O₁₂) Nanoparticle-Epoxy Composite for Advanced Lead-Free X-ray Radiation Shielding

Publisher: American Chemical Society (ACS)

Date: 13-07-2021

DOI: 10.1021/ACSANM.1C01475

Publication

Free-standing PEDOT/polyaniline conductive polymer hydrogel for flexible solid-state supercapacitors

Publisher: Elsevier BV

Date: 11-2019

DOI: 10.1016/J.ELECTACTA.2019.134769

Publication

Assessment of Binding Affinity between Drugs and Human Serum Albumin Using Nanoporous Anodic Alumina Photonic Crystals

Publisher: American Chemical Society (ACS)

Date: 10-05-2016

DOI: 10.1021/ACS.ANALCHEM.6B00993

Abstract: In this study, we report an innovative approach aiming to assess the binding affinity between drug molecules and human serum albumin by combining nanoporous anodic alumina rugate filters (NAA-RFs) modified with human serum albumin (HSA) and reflectometric interference spectroscopy (RIfS). NAA-RFs are photonic crystal structures produced by sinusoidal pulse anodization of aluminum that present two characteristic optical parameters, the characteristic reflection peak (λPeak), and the effective optical thickness of the film (OTeff), which can be readily used as sensing parameters. A design of experiments strategy and an ANOVA analysis are used to establish the effect of the anodization parameters (i.e., anodization period and anodization offset) on the sensitivity of HSA-modified NAA-RFs toward indomethacin, a model drug. To this end, two sensing parameters are used, that is, shifts in the characteristic reflection peak (ΔλPeak) and changes in the effective optical thickness of the film (ΔOTeff). Subsequently, optimized NAA-RFs are used as sensing platforms to determine the binding affinity between a set of drugs (i.e., indomethacin, coumarin, sulfadymethoxine, warfarin, and salicylic acid) and HSA molecules. Our results verify that the combination of HSA-modified NAA-RFs with RIfS can be used as a portable, low-cost, and simple system for establishing the binding affinity between drugs and plasma proteins, which is a critical factor to develop efficient medicines for treating a broad range of diseases and medical conditions.

Publication

Influence of pristine graphene particle sizes on physicochemical, microstructural and mechanical properties of Portland cement mortars

Publisher: Elsevier BV

Date: 12-2020

DOI: 10.1016/J.CONBUILDMAT.2020.120188

Publication

Publisher: Elsevier BV

Date: 07-2017

DOI: 10.1016/J.MATDES.2017.03.075

Publication

Publisher: IEEE

Date: 02-2010

DOI: 10.1109/ICONN.2010.6045213

Publication

Biomimetic Nanoporous Anodic Alumina Distributed Bragg Reflectors in the Form of Films and Microsized Particles for Sensing Applications

Publisher: American Chemical Society (ACS)

Date: 26-08-2015

DOI: 10.1021/ACSAMI.5B05904

Abstract: In this study, we produce for the first time biomimetic films and microsized particles based on nanoporous anodic alumina distributed Bragg reflectors (NAA-DBRs) by a rational galvanostatic pulse-anodization approach. These biomimetic photonic structures can feature a broad range of vivid bright colors, which can be tuned across the UV-visible spectrum by engineering their nanoporous structure through different anodization parameters. The effective medium of NAA-DBRs films is systematically assessed as a function of the anodization period, the anodization temperature, and the current density ratio by reflectometric interference spectroscopy (RIfS). This analysis makes it possible to establish the most sensitive structure toward changes in its effective medium. Subsequently, specific detection of vitamin C molecules is demonstrated. The obtained results reveal that NAA-DBRs with optimized structure can achieve a low limit of detection for vitamin C molecules as low as 20 nM, a sensitivity of 227±4 nm μM(-1), and a linearity of 0.9985. Finally, as proof of concept, we developed a new photonic nanomaterial based on NAA-DBR microsized particles, which could provide new opportunities to produce microsized photonic analytical tools.

Publication

International interlaboratory comparison of Raman spectroscopic analysis of CVD-grown graphene

Publisher: IOP Publishing

Date: 20-05-2022

DOI: 10.1088/2053-1583/AC6CF3

Abstract: There is a pressing need for reliable, reproducible and accurate measurements of graphene’s properties, through international standards, to facilitate industrial growth. However, trustworthy and verified standards require rigorous metrological studies, determining, quantifying and reducing the sources of measurement uncertainty. Towards this effort, we report the procedure and the results of an international interlaboratory comparison (ILC) study, conducted under Versailles Project on Advanced Materials and Standards. This ILC focusses on the comparability of Raman spectroscopy measurements of chemical vapour deposition (CVD) grown graphene using the same measurement protocol across different institutes and laboratories. With data gathered from 17 participants across academia, industry (including instrument manufacturers) and national metrology institutes, this study investigates the measurement uncertainty contributions from both Raman spectroscopy measurements and data analysis procedures, as well as provides solutions for improved accuracy and precision. While many of the reported Raman metrics were relatively consistent, significant and meaningful outliers occurred due to differences in the instruments and data analysis. These variations resulted in inconsistent reports of peak intensity ratios, peak widths and the coverage of graphene. Due to a lack of relative intensity calibration, the relative difference reported in the 2D- and G peak intensity ratios ( I 2 D / I G ) was up to 200%. It was also shown that the standard deviation for Γ 2 D values reported by different software packages, was 15× larger for Lorentzian fit functions than for pseudo-Voigt functions. This study has shown that by adopting a relative intensity calibration and consistent peak fitting and data analysis methodologies, these large, and previously unquantified, variations can be significantly reduced, allowing more reproducible and comparable measurements for the graphene community, supporting fundamental research through to the growing graphene industry worldwide. This project and its findings directly underpin the development of the ISO/IEC standard ‘ DTS 21356-2—Nanotechnologies—Structural Characterisation of CVD-grown Graphene ’.

Publication

3D Bioprinting of Methylcellulose/Gelatin-Methacryloyl (MC/GelMA) Bioink with High Shape Integrity

Publisher: American Chemical Society (ACS)

Date: 21-02-2020

DOI: 10.1021/ACSABM.0C00169

Abstract: The advent of three-dimensional (3D) bioprinting offers a feasible approach to construct complex structures suitable for tissue regeneration, during which cell-laden materials are dispensed on a substrate according to a predesigned structure. However, the lack of ideal printable bioinks with high shape fidelity and improved biological stability remains a major challenge. In this study, methylcellulose/gelatin-methacryloyl (MC/GelMA) bioink with high shape integrity is presented, which takes advantage of the printability of MC and the permanent photo-cross-linking of GelMA under UV irradiation. Although MC demonstrates good printability at room temperature, the lack of cross-linking ability causes distortion and finally dissociation of printed MC in biological media within a few days. However, UV-cross-linked MC/GelMA bioink remains stable in biological media over a period of several months. The shape integrity of MC/GelMA was systematically characterized in terms of yield stress and complex modulus. Unlike pure MC ink, the MC/GelMA ink demonstrated self-supporting behavior once printed due to the higher complex modulus and yield stress induced by GelMA in the system. Shape integrity of MC/GelMA ink resulted in higher resolution and printability which are evaluated by the successful printing of various 1D, 2D, and 3D constructs. Moreover, human primary osteoblasts encapsulated within the MC/GelMA hydrogel show cell viability of >95%. Overall, this work introduces MC/GelMA bioink with high shape integrity and improved biological stability and highlights the importance of rheological properties and post-cross-linking for fabrication of physiologically scaled tissue implants.

Publication

Optically optimized photoluminescent and interferometric biosensors based on nanoporous anodic alumina: A comparison

Publisher: American Chemical Society (ACS)

Date: 02-08-2013

DOI: 10.1021/AC401609C

Abstract: Herein, we present a comparative study about the sensing performance of optical biosensors based on photoluminescence spectroscopy (PLS) and reflectometric interference spectroscopy (RIfS) combined with nanoporous anodic alumina (NAA) platforms when detecting different analytes under distinct adsorption conditions. First, NAA platforms are structurally engineered in order for optimizing the optical signals obtained by PLS and RIfS. Then, the most optimal NAA platforms combined with PLS and RIfS are quantitatively compared by detecting two different analytes: d-glucose and l-cysteine under nonspecific and specific adsorption conditions, respectively. The obtained results demonstrate that such parameters as the analyte nature and adsorption conditions play a direct role in the sensing performance of these platforms. However, as this study demonstrates, PLS-NAA platforms are more sensitive than RIfS-NAA ones. The former shows better linearity (i.e., proportional change in the sensing parameter with analyte concentration), higher sensitivity toward analytes (i.e., sharper change in the sensing parameter with analyte concentration), and lower limit of detection (i.e., minimum detectable concentration of analyte).

Publication

Publisher: IEEE

Date: 02-2008

DOI: 10.1109/ICONN.2008.4639252

Publication

Publisher: Elsevier BV

Date: 06-2012

DOI: 10.1016/J.POWTEC.2011.04.023

Publication

Diatom silica, an emerging biomaterial for energy conversion and storage

Publisher: Royal Society of Chemistry (RSC)

Date: 2017

DOI: 10.1039/C7TA02045G

Abstract: Diatom silica, a 3-dimensional (3D) natural biomaterial generated from single cell algae with unique nano- and micro-morphologies and patterns is shown to have several exceptional structural, mechanical, optical, photonics, transport, and chemical properties optimized through millions of years of evolution.

Publication

Nanoporous Anodic Alumina Rugate Filters for Sensing of Ionic Mercury: Toward Environmental Point-of-Analysis Systems

Publisher: American Chemical Society (ACS)

Date: 24-07-2014

DOI: 10.1021/AM502882D

Abstract: Herein, we present an ultrasensitive, cost-competitive, and portable optical sensing system for detecting ionic mercury in environmental water. This analytical system combines structurally engineered and chemically modified nanoporous anodic alumina rugate filters (NAA-RFs) with reflection spectroscopy (RfS). The sensing performance of the proposed system is assessed through several tests, establishing its sensing performance (i.e., linear working range from 1 to 100 μM of Hg(2+), low limit of detection 1 μM of Hg(2+) ions (i.e., 200 ppb), and sensitivity of 0.072 nm μM(-1)), chemical selectivity (i.e., exposure to different metal ions Co(2+), Mg(2+), Ni(2+), Cu(2+), Pb(2+), Fe(3+), Ca(2+), Cr(6+), and Ag(+)) and metal ions binding mechanism (i.e., fitting to Langmuir and Freundlich isotherm models). Furthermore, the detection of Hg(2+) ions in tap and environmental water (River Torrens) is successfully carried out, demonstrating the suitability of this system for developing environmental point-of-analysis systems.

Publication

MnO₂ nanostructures with three-dimensional (3D) morphology replicated from diatoms for high-performance supercapacitors

Publisher: Royal Society of Chemistry (RSC)

Date: 2015

DOI: 10.1039/C5TA00634A

Abstract: The synthesis of MnO 2 with unique and complex 3-d morphology replicated from diatoms and their outstanding electrochemical properties for high-performance supercapacitors are demonstrated.

Publication

Graphene Oxide‐Based Lamella Network for Enhanced Sound Absorption

Publisher: Wiley

Date: 23-10-2017

DOI: 10.1002/ADFM.201703820

Publication

Nitrogen-doped carbon-coated nanodiamonds for electrocatalytic applications

Publisher: IOP Publishing

Date: 08-12-2021

DOI: 10.1088/1361-6463/ABC6D6

Abstract: Nitrogen-doped carbon hybridized nanodiamond (N-doped C@ND) materials have been developed and used as an electrocatalytic for oxygen reduction reactions (ORRs). The polymerized ionic liquids are employed to modify NDs and then subjected to thermal annealing at 600 °C, resulting in a high concentration of N-doped (9.33 at.%) carbon frameworks attached on the ND surface. This N-doped C@ND material provides a highly active mesoporous structure (4 nm pore) with a high surface area (366 m 2 g −1 ) and allows for enhancement of catalytic performance compared to pure NDs. The N-doped C layers altered the electroneutrality of NDs, creating favourable charged sites for oxygen adsorption, thus weakening the O–O bond strength to facilitate ORR activity. Having a predominant four-electron transfer pathway with a total electron transfer number of 3.44–3.88 in the potential region of 0.1–0.8 V RHF , the N-doped C@ND-based catalyst materials performed well as a catalyst for the ORR in the alkaline medium. This affordable material and simple process will find potential application in clean energy generation and storage, durable fuel cells and metal–air batteries.

Publication

Publisher: American Chemical Society (ACS)

Date: 25-01-2021

DOI: 10.1021/ACSBIOMATERIALS.0C01210

Publication

Gold nanotube membranes functionalised with fluorinated thiols for selective molecular transport

Publisher: Elsevier BV

Date: 02-2009

DOI: 10.1016/J.MEMSCI.2008.11.055

Publication

MoS₂/Graphene Composites as Promising Materials for Energy Storage and Conversion Applications

Publisher: Wiley

Date: 04-09-2019

DOI: 10.1002/ADMI.201900915

Publication

Activating 2D nano-kaolinite using hybrid nanoparticles for enhanced phosphate capture

Publisher: Royal Society of Chemistry (RSC)

Date: 2018

DOI: 10.1039/C8CC04642E

Abstract: A natural 2D kaolinite host is activated by hybridizing with adsorptive La-based nanoparticles, demonstrating efficient phosphate capture.

Publication

Erratum to: Laboratory evaluation of five novel pyrrole derivatives as grain protectants against Tribolium confusum and Ephestia kuehniella larvae

Publisher: Springer Science and Business Media LLC

Date: 12-2016

DOI: 10.1007/S10340-016-0818-8

Publication

Publisher: Springer Science and Business Media LLC

Date: 10-12-2005

DOI: 10.1007/S10008-004-0614-X

Publication

Dressing in Layers: Layering Surface Functionalities in Nanoporous Aluminum Oxide Membranes

Publisher: Wiley

Date: 15-09-2010

DOI: 10.1002/ANIE.201002504

Publication

Publisher: IEEE

Date: 12-2010

DOI: 10.1109/COMMAD.2010.5699716

Publication

Engineering of ZnO/Graphene Nanocomposite for Enhancing Visible Photocatalytic Ability

Publisher: Wiley

Date: 03-11-2022

DOI: 10.1002/PSSA.202200172

Abstract: Herein, the visible light‐photocatalytic performance of synthesized ZnO/Gr composite materials with different Gr content under various conditions, i.e., pH, dye concentration, and different scavengers (to understand the photocatalytic activity mechanism) is systematically investigated. Photocatalytic performance is evaluated with the degradation of methylene blue (MB) in solution under sunlight irradiation. The presence of graphene (Gr) in the ZnO/Gr composites shows enhanced photocatalytic activity compared to pure ZnO under natural sunlight illumination. The highest photodegradation efficiency of ≈94% when the content of Gr is 1 wt% in comparison to ≈76% for the pure ZnO, corresponding to reaction rate constants of 0.01038 and 0.00615 min −1 , respectively. Compared to recent publications, the degradation efficiency is high with relatively high dye concentration, low catalyst amount, and large solution volume. The enhanced visible light absorption and the reduction of bandgap value are attributed to the enhanced photocatalytic properties of the hybridized composite. Moreover, the investigation of the effect of scavenger substances shows that H 2 O 2 strongly enhanced their photocatalytic ability, suggesting that holes (h + ) contribute as the reactive agent in the photodegradation process.

Publication

Structural and Optical Nanoengineering of Nanoporous Anodic Alumina Rugate Filters for Real-Time and Label-Free Biosensing Applications

Publisher: American Chemical Society (ACS)

Date: 22-01-2014

DOI: 10.1021/AC500069F

Abstract: In this study, we report about the structural engineering and optical optimization of nanoporous anodic alumina rugate filters (NAA-RFs) for real-time and label-free biosensing applications. Structurally engineered NAA-RFs are combined with reflection spectroscopy (RfS) in order to develop a biosensing system based on the position shift of the characteristic peak in the reflection spectrum of NAA-RFs (Δλpeak). This system is optimized and assessed by measuring shifts in the characteristic peak position produced by small changes in the effective medium (i.e., refractive index). To this end, NAA-RFs are filled with different solutions of d-glucose, and the Δλpeak is measured in real time by RfS. These results are validated by a theoretical model (i.e., the Looyenga-Landau-Lifshitz model), demonstrating that the control over the nanoporous structure makes it possible to optimize optical signals in RfS for sensing purposes. The linear range of these optical sensors ranges from 0.01 to 1.00 M, with a low detection limit of 0.01 M of d-glucose (i.e., 1.80 ppm), a sensitivity of 4.93 nm M(-1) (i.e., 164 nm per refractive index units), and a linearity of 0.998. This proof-of-concept study demonstrates that the proposed system combining NAA-RFs with RfS has outstanding capabilities to develop ultrasensitive, portable, and cost-competitive optical sensors.

Publication

Publisher: Elsevier BV

Date: 08-2016

DOI: 10.1016/J.CPLETT.2016.06.028

Publication

Insecticidal effect of graphene against three stored-product beetle species on wheat

Publisher: Elsevier BV

Date: 09-2022

DOI: 10.1016/J.JSPR.2022.101999

Publication

Publisher: Wiley

Date: 19-01-2022

DOI: 10.1002/CMDC.202100781

Publication

Graphene ink for 3D extrusion micro printing of chemo-resistive sensing devices for volatile organic compound detection

Publisher: Royal Society of Chemistry (RSC)

Date: 2021

DOI: 10.1039/D1NR00150G

Abstract: Printed electronic sensors offer a breakthrough in the availability of low-cost devices for improving the quality of human life. Conductive ink is the core of printing technology and is one of the fastest growing ink industries.

Publication

Publisher: Elsevier BV

Date: 11-2022

DOI: 10.1016/J.FOODHYD.2022.107855

Publication

Estimation of anisotropic permeability in trabecular bone based on microCT imaging and pore-scale fluid dynamics simulations

Publisher: Elsevier BV

Date: 06-2017

DOI: 10.1016/J.BONR.2016.12.002

Publication

Synthesis of Self-Supporting Gold Microstructures with Three-Dimensional Morphologies by Direct Replication of Diatom Templates

Publisher: American Chemical Society (ACS)

Date: 28-07-2010

DOI: 10.1021/LA102083T

Abstract: Diatoms (unicellular algae) form porous silica walls (frustule) with intricate, hierarchically organized three-dimensional (3D) structures with micro- to nanoscale dimensions. This paper presents the fabrication of self-supporting gold microstructures with complex 3D morphologies by using electroless gold deposition onto a diatom silica substrate, followed by the substrate removal by acid dissolution. It was demonstrated that gold diatom replicas with distinct micro- to nanoscale structures can be created by a simple and scalable process based on electroless gold deposition. Excellent catalytic properties (catalytic rate constant k = 23.5 +/- 1 x 10(-2) min(-1)) of prepared gold replica catalysts were confirmed for the reduction process of 4-nitrophenol (4-NP) into 4-aminophenol (4-AP) in the presence of NaBH(4) as the reductant. This synthetic approach is general and flexible, and it is envisaged that it can be applied for the preparation of a wide range of different metals (Pt, Pd, Ag, Ni, etc.) offering more efficient catalytic, optical, or magnetic properties.

Dusan Losic

Researcher

Research Topics

Top 5 Research Topics

ANZSRC Field of Research (FoR)

ANZSRC Socio-Economic Objective (SEO)

Related Links

Publications

Correction to: “Experimental Study on Glass and Polymers: Determining the Optimal Material for Potential Use in Terahertz Technology”

Advanced biopolymer-coated drug-releasing titania nanotubes (TNTs) implants with simultaneously enhanced osteoblast adhesion and antibacterial properties

Selective adsorption of oil–water mixtures using polydimethylsiloxane (PDMS)–graphene sponges

Electromigration with enhanced green emission in the titanium dioxide nanotube/graphene composite

Process intensification for gram-scale synthesis of N-doped carbon quantum dots immersing a microplasma jet in a gas-liquid reactor

MicroRNA target prediction and validation

Electrically and thermally conductive elastomer by using MXene nanosheets with interface modification

Corrigendum to “Graphene and metal organic frameworks (MOFs) hybridization for tunable chemoresistive sensors for detection of volatile organic compounds (VOCs) biomarkers” [Carbon 159 (2020) 333–344] (Carbon (2020) 159 (333–344), (S000862231931245X), (10.1016/j.carbon.2019.12.010))

Naturally Derived Iron Oxide Nanowires from Bacteria for Magnetically Triggered Drug Release and Cancer Hyperthermia in 2D and 3D Culture Environments: Bacteria Biofilm to Potent Cancer Therapeutic

On The Generation of Interferometric Colors in High Purity and Technical Grade Aluminum: An Alternative Green Process for Metal Finishing Industry

Rational Design of Ultra-Short Anodic Alumina Nanotubes by Short-Time Pulse Anodization

Impedance nanopore biosensor: influence of pore dimensions on biosensing performance

Revealing the dependence of graphene concentration and physicochemical properties on the crushing strength of co-granulated fertilizers by wet granulation process

Maximized crystal water content and charge-shielding effect in layered vanadate render superior aqueous zinc-ion battery

3D printing interface-modified PDMS/MXene nanocomposites for stretchable conductors

Unlocking thermogravimetric analysis (TGA) in the fight against “Fake graphene” materials

Morphology-controlled MnO2-graphene oxide-diatomaceous earth 3-dimensional (3D) composites for high-performance supercapacitors

CHAPTER 10. Diatomaceous Earth, A Natural Insecticide for Stored Grain Protection: Recent Progress and Perspectives

Enhancing the performance and environmental impact of alkali-activated binder-based composites containing graphene oxide and industrial by-products

A green approach for the reduction of graphene oxide nanosheets using non-aromatic amino acids

A simple approach for synthesis of TiO2 nanotubes with through-hole morphology

Nanoporous anodic aluminium oxide: Advances in surface engineering and emerging applications

Self-Assembly and Cross-Linking of Conducting Polymers into 3D Hydrogel Electrodes for Supercapacitor Applications

Fabrication of stimulus-responsive diatom biosilica microcapsules for antibiotic drug delivery

Atomic layer deposition of SIO 2 on porous alumina membranes: controlling the pore size and transport properties

The hydrothermal processing of iron oxides from bacterial biofilm waste as new nanomaterials for broad applications

Polymer Micelles for Delayed Release of Therapeutics from Drug-Releasing Surfaces with Nanotubular Structures

Preface

Rational Design of Photonic Dust from Nanoporous Anodic Alumina Films: A Versatile Photonic Nanotool for Visual Sensing

Mechanical Properties of Cement Mortar Composites Containing Graphene Oxide

Cryogenic cleavage used in gold substrate production

Trastuzumab-decorated nanoparticles for in vitro and in vivo tumor-targeting hyperthermia of HER2+ breast cancer

Graphene‐Based Sorbents for Multipollutants Removal in Water: A Review of Recent Progress

Polymeric micelles in porous and nanotubular implants as a new system for extended delivery of poorly soluble drugs

Graphene Oxide: A New Carrier for Slow Release of Plant Micronutrients

A unique 3D nitrogen-doped carbon composite as high-performance oxygen reduction catalyst

Ion-beam pore opening of porous anodic alumina: The formation of single nanopore and nanopore arrays

Gold nanotube membranes have catalytic properties

Editorial [Hot Topic: Bio-Inspired Micro and Nanosystems (Guest Editor: Dusan Losic)]

A new approach to the immobilisation of poly(ethylene oxide) for the reduction of non-specific protein adsorption on conductive substrates

Functionalized three-dimensional (3D) graphene composite for high efficiency removal of mercury

Advancing fabrication and properties of three-dimensional graphene–alginate scaffolds for application in neural tissue engineering

Combining micro and nanoscale structures: Emerging applications of Diatoms

New insights on energetic properties of graphene oxide (GO) materials and their safety and environmental risks

Highly biocompatible carbon nanocapsules derived from plastic waste for advanced cancer therapy

Electrochemical synthesis of nickel hexacyanoferrate nanoarrays with dots, rods and nanotubes morphology using a porous alumina template

Turmeric, naturally available colorimetric receptor for quantitative detection of fluoride and iron

The progressive role of acoustic cavitation for non-invasive therapies, contrast imaging and blood-tumor permeability enhancement

Modulating molecular transport across peptide-modified nanoporous alumina membranes with light

Activation of natural halloysite nanotubes by introducing lanthanum oxycarbonate nanoparticles via co-calcination for outstanding phosphate removal

Graphene and metal organic frameworks (MOFs) hybridization for tunable chemoresistive sensors for detection of volatile organic compounds (VOCs) biomarkers

Engineering of Micro- to Nanostructured 3D-Printed Drug-Releasing Titanium Implants for Enhanced Osseointegration and Localized Delivery of Anticancer Drugs

Systematic in vitro nanotoxicity study on anodic alumina nanotubes with engineered aspect ratio: Understanding nanotoxicity by a nanomaterial model

Surface oxidized two-dimensional antimonene nanosheets for electrochemical ammonia synthesis under ambient conditions

Silver Nanowires with Pristine Graphene Oxidation Barriers for Stable and High Performance Transparent Conductive Films

β‐Amyloid protein oligomers induced by metal ions and acid pH are distinct from those generated by slow spontaneous ageing at neutral pH

An overview of nanotoxicity and nanomedicine research: principles, progress and implications for cancer therapy

Electrostatic powder coatings of pristine graphene: A new approach for coating of granular and fibril substrates

Nanoporous anodic aluminum oxide for chemical sensing and biosensors

3D bioprinting of cell-laden electroconductive MXene nanocomposite bioinks

Titania nanotubes for local drug delivery from implant surfaces

Electrochemically produced graphene with ultra large particles enhances mechanical properties of Portland cement mortar

Graphene Aerogels Decorated with α-FeOOH Nanoparticles for Efficient Adsorption of Arsenic from Contaminated Waters

Core-shell nanostructured hybrid composites for volatile organic compound detection

Bioinspired Microchip Nanoporous Interferometric Sensor for Sensing and Biosensing Applications

Scanning atmospheric plasma for ultrafast reduction of graphene oxide and fabrication of highly conductive graphene films and patterns

Surface-functionalized diatom microcapsules for drug delivery of water-insoluble drugs

Ecotoxicology of manufactured graphene oxide nanomaterials and derivation of preliminary guideline values for freshwater environments

Pore spanning lipid bilayers on silanised nanoporous alumina membranes

Green synthesis of three-dimensional hybrid N-doped ORR electro-catalysts derived from apricot sap

Chemical Functionalization of Diatom Silica Microparticles for Adsorption of Gold (III) Ions

Recent Advances in Sensing Applications of Graphene Assemblies and Their Composites

A simple approach for synthesis of TiO₂ nanotubes with through-hole morphology

α7‐Nicotinic acetylcholine receptors mediate an Aβ₁₋₄₂‐induced increase in the level of acetylcholinesterase in primary cortical neurones