ORCID Profile
0000-0002-7291-9281
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)
Electronic and magnetic properties of condensed matter; superconductivity | Condensed Matter Physics | Manufacturing Processes and Technologies (excl. Textiles) | Materials Engineering | Electronic and Magnetic Properties of Condensed Matter; Superconductivity | Materials engineering | Condensed matter physics | Synthesis of Materials | Sensor Technology (Chemical aspects) | Powder and Particle Technology | Mechanical Engineering not elsewhere classified | Materials Engineering not elsewhere classified | Nanomaterials | Manufacturing processes and technologies (excl. textiles) | Functional materials | Nanomaterials | Electrical and Electronic Engineering not elsewhere classified | Energy Generation, Conversion and Storage Engineering | Nanotechnology | Composite and Hybrid Materials | Nuclear Physics
ANZSRC Socio-Economic Objective (SEO)
Expanding Knowledge in Engineering | Energy Transmission and Distribution (excl. Hydrogen) | Management of Greenhouse Gas Emissions from Mineral Resource Activities | Wind Energy | Expanding Knowledge in Technology | Nuclear Energy | Environmentally Sustainable Energy Activities not elsewhere classified | Machined Metal Products | Diagnostic Methods | Ceramics |
Related Links
Publications
Conductive polymers for next-generation energy storage systems: recent progress and new functions
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6MH00165C
Abstract: This review summarizes the synthesis of conductive polymers with different chemical structures in various ways and also addresses their widespread recent development for energy storage system applications.
Nanoarchitectures of self-assembled poly(styrene-b-4-vinyl pyridine) diblock copolymer blended with polypeptide for effective adsorption of mercury(ii ) ions
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6RA23431C
Abstract: The crosslinked PS- b -P4VP/PTyr materials possesses superior adsorbed mercur since mercury ions tend to bind to the pyridyl rings of P4VP and the amido groups of PTyr through ionic dipole interactions.
Percolative nature of current transport in polycrystalline MgB2 wires
Publisher: Elsevier BV
Date: 03-2014
Synergetic combination of LIMD with CHPD for the production of economical and high performance MgB2 Wires
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 06-2013
Metal–Organic Framework (MOF)‐Derived Nanoporous Carbon Materials
Publisher: Wiley
Date: 10-04-2019
Abstract: Metal-organic framework (MOF)-derived nanoporous carbon materials have attracted significant interest due to their advantages of controllable porosity, good thermal/chemical stability, high electrical conductivity, catalytic activity, easy modification with other elements and materials, etc. Thus, MOF-derived carbons have been used in numerous applications, such as environmental remediations, energy storage systems (i.e. batteries, supercapacitors), and catalysts. To date, many strategies have been developed to enhance the properties and performance of MOF-derived carbons. Herein, we introduce and summarize recent important approaches for advanced MOF-derived carbon structures with a focus on precursor control, heteroatom doping, shape/orientation control, and hybridization with other functional materials.
First Synthesis of Continuous Mesoporous Copper Films with Uniformly Sized Pores by Electrochemical Soft Templating
Publisher: Wiley
Date: 24-08-2016
Localization of platinum nanoparticles on inner walls of mesoporous hollow carbon spheres for improvement of electrochemical stability
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7NR07267H
Abstract: Mesoporous hollow carbon spheres with Pt nanoparticles (NPs) loaded on their inner walls (Pt@HC-meso) have been designed and prepared through a dual-templating method.
Gold-loaded nanoporous superparamagnetic nanocubes for catalytic signal amplification in detecting miRNA
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7CC04789D
Abstract: A nonenzymatic, lification-free, and sensitive method for microRNA detection is reported using Au@NPFe 2 O 3 NC nanocubes.
Correlation between in-field Jc enhancement and grain connectivity in co-doped MgB2 superconductor
Publisher: Elsevier BV
Date: 2015
Magnetization Loss of MgB2 Superconducting Wire at Various Temperatures
Publisher: Springer Science and Business Media LLC
Date: 28-12-2012
Enhanced Peroxidase Mimetic Activity of Porous Iron Oxide Nanoflakes
Publisher: Wiley
Date: 04-02-2019
Nanoarchitectured peroxidase-mimetic nanozymes: mesoporous nanocrystalline α- or γ-iron oxide?
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9TB00989B
Abstract: Next-generation nanozyme based biosensing: mesoporous nanocrystalline α- or γ-iron oxide?
Layer-by-Layer Motif Architectures: Programmed Electrochemical Syntheses of Multilayer Mesoporous Metallic Films with Uniformly Sized Pores
Publisher: Wiley
Date: 05-06-2017
Abstract: Although multilayer films have been extensively reported, most compositions have been limited to non-catalytically active materials (e.g. polymers, proteins, lipids, or nucleic acids). Herein, we report the preparation of binder-free multilayer metallic mesoporous films with sufficient accessibility for high electrocatalytic activity by using a programmed electrochemical strategy. By precisely tuning the deposition potential and duration, multilayer mesoporous architectures consisting of alternating mesoporous Pd layers and mesoporous PdPt layers with controlled layer thicknesses can be synthesized within a single electrolyte, containing polymeric micelles as soft templates. This novel architecture, combining the advantages of bimetallic alloys, multilayer architectures, and mesoporous structures, exhibits high electrocatalytic activity for both the methanol oxidation reaction (MOR) and the ethanol oxidation reaction (EOR).
Evaluation of a solid nitrogen impregnated MgB2 racetrack coil
Publisher: IOP Publishing
Date: 07-09-2018
Nanoarchitectonics: A New Materials Horizon for Prussian Blue and Its Analogues
Publisher: The Chemical Society of Japan
Date: 15-04-2019
Influence of disorder on the in-field J(c) of MgB(2) wires using highly active pyrene
Publisher: AIP Publishing
Date: 28-01-2008
DOI: 10.1063/1.2838756
Abstract: In this work, we report on significantly enhanced critical current density (Jc) in MgB2 superconductor that was easily obtained by doping with a hydrocarbon, highly active pyrene (C16H10), and using a sintering temperature as low as ∼600°C. The processing advantages of the C16H10 additive include production of a highly active carbon (C) source, an increased level of disorder, and the introduction of small grain size, resulting in enhancement of Jc.
Synthesis and Characterization of Dendritic Pt Nanoparticles by Using Cationic Surfactant
Publisher: The Chemical Society of Japan
Date: 15-09-2018
Detection of FGFR2 : FAM76A Fusion Gene in Circulating Tumor RNA Based on Catalytic Signal Amplification of Graphene Oxide-loaded Magnetic Nanoparticles
Publisher: Wiley
Date: 04-07-2018
Biological Functions and Current Advances in Isolation and Detection Strategies for Exosome Nanovesicles
Publisher: Wiley
Date: 28-12-2018
Abstract: Exosomes are nanoscale (≈30-150 nm) extracellular vesicles of endocytic origin that are shed by most types of cells and circulate in bodily fluids. Exosomes carry a specific composition of proteins, lipids, RNA, and DNA and can work as cargo to transfer this information to recipient cells. Recent studies on exosomes have shown that they play an important role in various biological processes, such as intercellular signaling, coagulation, inflammation, and cellular homeostasis. These functional roles are attributed to their ability to transfer RNA, proteins, enzymes, and lipids, thereby affecting the physiological and pathological conditions in various diseases, including cancer and neurodegenerative, infectious, and autoimmune diseases (e.g., cancer initiation, progression, and metastasis). Due to these unique characteristics, exosomes are considered promising biomarkers for the diagnosis and prognosis of various diseases via noninvasive or minimally invasive procedures. Over the last decade, a plethora of methodologies have been developed for analyzing disease-specific exosomes using optical and nonoptical tools. Here, the major biological functions, significance, and potential role of exosomes as biomarkers and therapeutics are discussed. Furthermore, an overview of the most commonly used techniques for exosome analysis, highlighting the major technical challenges and limitations of existing techniques, is presented.
Nanostructured mesoporous gold electrodes detect protein phosphorylation in cancer with electrochemical signal amplification
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0AN01096K
Abstract: A nanostructured mesoporous gold electrode is demonstrated to detect the phosphorylated protein over non-phosphorylated in cancer using electrochemical signal lification through differential pulse voltammetry in the presence of the [Fe(CN) 6 ] 3−/4− .
A facile surfactant-assisted synthesis of carbon-supported dendritic Pt nanoparticles with high electrocatalytic performance for the oxygen reduction reaction
Publisher: Elsevier BV
Date: 05-2019
Tethering mesoporous Pd nanoparticles to reduced graphene oxide sheets forms highly efficient electrooxidation catalysts
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7TA05091G
Abstract: Uniformly sized mesoporous palladium (Pd) nanoparticles supported on reduced graphene oxide (rGO) surfaces can be prepared by solution phase synthesis.
Zeolitic imidazolate framework (ZIF-8) derived nanoporous carbon: the effect of carbonization temperature on the supercapacitor performance in an aqueous electrolyte
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6CP05555A
Abstract: Nanoporous carbons prepared at various carbonization temperatures are tested using an aqueous electrolyte for supercapacitor applications.
Enhancing superconducting properties of MgB2 pellets by addition of amorphous magnetic Ni-Co-B nanoparticles
Publisher: IOP Publishing
Date: 20-05-2013
Zinc Ferrite Anchored Multiwalled Carbon Nanotubes for High‐Performance Supercapacitor Applications
Publisher: Wiley
Date: 17-01-2018
Improving fault ride-through capability of DFIG based wind generators by using bridge-type superconducting fault current limiter
Publisher: IEEE
Date: 09-2015
Porous nanozymes: the peroxidase-mimetic activity of mesoporous iron oxide for the colorimetric and electrochemical detection of global DNA methylation
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8TB01132J
Abstract: Peroxidase-mimetic activity of mesoporous Fe 2 O 3 nanomaterials in global DNA methylation detection using naked eye and electrochemical readout.
Mesoporous Alumina as an Effective Adsorbent for Molybdenum (Mo) toward Instant Production of Radioisotope for Medical Use
Publisher: The Chemical Society of Japan
Date: 15-10-2017
Effect of magnetic field on the flux pinning mechanisms in Al and SiC co-doped MgB2 superconductor
Publisher: Elsevier BV
Date: 07-2018
DC and AC magnetic fields increase neurite outgrowth of SH-SY5Y neuroblastoma cells with and without retinoic acid
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9RA02001B
Abstract: AC/DC magnetic fields generated from a simple and cost effective electromagnetic system have been used for increased neurite outgrowth in SH-SY5Y cells without negatively affecting the cell viability.
MgB2 for MRI applications: dual sintering induced performance variations in in situ and IMD processed MgB2 conductors
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/C9TC06114B
Abstract: Dual sintering induced performance variations in MgB 2 superconductors are studied in detail in relation to MRI applications.
Novel synthesis of superparamagnetic Ni-Co-B nanoparticles and their effect on superconductor properties of MgB2
Publisher: Elsevier BV
Date: 05-2014
Effects of morphology of Mg powder precursor on phase formation and superconducting properties of Mg11B2 low activation superconductor
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8TC02300J
Abstract: The sintering process of Mg 11 B 2 s le using spherical Mg powder is different from the plate-like one (usual used).
Significant enhancement of Hc2 and Hirr in MgB 2 +C4 H6 O5 bulks at a low sintering temperature of 600 °c
Publisher: IOP Publishing
Date: 23-07-2007
Boron-Functionalized Graphene Oxide-Organic Frameworks for Highly Efficient CO2Capture
Publisher: Wiley
Date: 10-01-2017
Abstract: The capture and storage of CO
Fabrication, Transport Current Testing, and Finite Element Analysis of MgB2 Racetrack Coils
Publisher: Springer Science and Business Media LLC
Date: 07-11-2017
Superparamagnetic Gadolinium Ferrite Nanoparticles with Controllable Curie Temperature – Cancer Theranostics for MR‐Imaging‐Guided Magneto‐Chemotherapy
Publisher: Wiley
Date: 30-08-2016
Rational design of MgB2 conductors toward practical applications
Publisher: Elsevier BV
Date: 09-2014
Jute-derived microporous/mesoporous carbon with ultra-high surface area using a chemical activation process
Publisher: Elsevier BV
Date: 2019
Mechanism of Enhanced Carbon Substitution in CNT-MgB2 Superconductor Composite Using Ball Milling in a Methanol Medium: Positive Role of Boron Oxide
Publisher: Springer Science and Business Media LLC
Date: 12-08-2017
Structurally homogeneous MgB2 superconducting wires through economical wet mixing process
Publisher: Elsevier BV
Date: 2013
Improved transport properties and connectivity of in situ MgB2 wires obtained by Cold High Pressure Densification (CHPD)
Publisher: Elsevier BV
Date: 11-2011
Phase transformation and superconducting properties of MgB(2) using ball-milled low purity boron
Publisher: AIP Publishing
Date: 15-01-2008
DOI: 10.1063/1.2832752
Abstract: MgB 2 s les were prepared by using 96% boron (B) powder with strong crystalline phase that had been ball milled for various times. We observed s les that contained ball-milled 96% B in comparison with one made from as-supplied commercial 96% B, with the results showing a significant enhancement in the high field critical current density (Jc) due to small grain size and better reactivity. Specifically, many grain boundaries for MgB2 could be acting as strong flux pinning centers. Based on Rowell connectivity analysis, when the ball-milling time increased, the connectivity factor, described as the active cross-sectional area fraction (AF), was decreased. This implies that the intergrain connectivity became worse. These properties could lead to poor Jc in low field. However, the pinning force strength, Jc1/2×B1/4, of s les using ball-milled 96% B is larger than that of the reference s le using commercial 96% B powder. These results accompany enhanced irreversibility (Hirr) and upper critical fields (Hc2).
High performance MgB2 superconducting wires fabricated by improved internal Mg diffusion process at a low temperature
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6TC03288E
Abstract: Cu coating treatment can significantly enhance the formation of MgB 2 layer within internal Mg diffusion processed superconducting wire.
Improvement ofJcby cold high pressure densification of binary, 18-filamentin situMgB2wires
Publisher: IOP Publishing
Date: 27-05-2011
Gold-loaded nanoporous ferric oxide nanocubes for electrocatalytic detection of microRNA at attomolar level
Publisher: Elsevier BV
Date: 03-2018
DOI: 10.1016/J.BIOS.2017.09.027
Abstract: A crucial issue in microRNA (miRNA) detection is the lack of sensitive method capable of detecting the low levels of miRNA in RNA s les. Herein, we present a sensitive and specific method for the electrocatalytic detection of miR-107 using gold-loaded nanoporous superparamagnetic iron oxide nanocubes (Au-NPFe
Control of core structure in MgB2 wire through tailoring boron powder
Publisher: Elsevier BV
Date: 07-2015
Coexistence of the δl and δtc flux pinning mechanisms in nano-Si-doped MgB2
Publisher: IOP Publishing
Date: 23-12-2010
Gold-Loaded Nanoporous Ferric Oxide Nanocubes with Peroxidase-Mimicking Activity for Electrocatalytic and Colorimetric Detection of Autoantibody
Publisher: American Chemical Society (ACS)
Date: 26-09-2017
DOI: 10.1021/ACS.ANALCHEM.7B02880
Abstract: The enzyme-mimicking activity of iron oxide based nanostructures has provided a significant advantage in developing advanced molecular sensors for biomedical and environmental applications. Herein, we introduce the horseradish peroxidase (HRP)-like activity of gold-loaded nanoporous ferric oxide nanocubes (Au-NPFe
High surface area nanoporous carbon derived from high quality jute from Bangladesh
Publisher: Elsevier BV
Date: 09-2018
Fabrication of an MOF-derived heteroatom-doped Co/CoO/carbon hybrid with superior sodium storage performance for sodium-ion batteries
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7TA03939E
Abstract: MOF-derived heteroatom (Ni and N)-doped Co/CoO/carbon hybrid with superior sodium storage performance for sodium-ion batteries have been fabricated from bimetallic Ni–Co-ZIF particles through annealing under argon atmosphere at 500 °C.
All-in-one energy harvesting and storage devices
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6TA01229A
Abstract: The recent development and perspectives of energy harvesting and storage devices including integration strategies are summarized and discussed.
Enhanced Connectivity and Percolation in Binary and Doped In Situ ${\rm MgB}_{2}$ Wires After Cold High Pressure Densification
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 06-2011
Gold‐Loaded Nanoporous Iron Oxide Cubes Derived from Prussian Blue as Carbon Monoxide Oxidation Catalyst at Room Temperature
Publisher: Wiley
Date: 18-12-2018
Graphene‐Wrapped Nanoporous Nickel‐Cobalt Oxide Flakes for Electrochemical Supercapacitors
Publisher: Wiley
Date: 06-08-2018
Role of double doping with C and RE 2 O 3 oxides on the critical temperature and critical current of MgB 2 phase
Publisher: Elsevier BV
Date: 06-2017
Superior critical current density obtained in Mg11B2 low activation superconductor by using reactive amorphous 11B and optimizing sintering temperature
Publisher: Elsevier BV
Date: 11-2015
Vortex flux pinning mechanism and enhancement of in-field Jc in succinic acid doped MgB2
Publisher: Elsevier BV
Date: 08-2013
Bending of CORC® cables and wires: finite element parametric study and experimental validation
Publisher: IOP Publishing
Date: 05-10-2018
Advanced Functional Carbons and Their Hybrid Nanoarchitectures towards Supercapacitor Applications
Publisher: Wiley
Date: 02-10-2018
Abstract: Porous carbons have attracted much attention as electrode materials for supercapacitors due to their enormous surface area, high electrical conductivity, excellent corrosion resistance, high temperature stability, and relatively low cost. The design of porous architectures is considered key for determining electrochemical performance. Pore size distribution, pore size, and pore connectivity strongly affect electrochemical performance. Various carbon materials with pore size ranging from micro- to macropores were extensively studied. Herein, various types of porous carbon-based and hybrid materials from different approaches and their electrochemical applications are summarized. Appropriate tuning of the pore size of carbon materials is essential for ensuring good transport of ions with different sizes throughout the electrolyte, so that the electrode materials can be fully utilized. Many carbon materials were produced from a series of carbonization and activation processes that possess controllable pore structures, including activated carbons, graphite, carbon nanotubes, carbon aerogels, and templated porous carbons. Templated carbon materials were prepared by various approaches, such as direct carbonization from carbon precursors and soft- and hard-template methods. To enhance the electrochemical performance of the electrode materials, heteroatoms, such as nitrogen, sulfur, and boron, were doped into porous carbons. In addition, to optimize the overall capacitance without destroying the stability and morphology of electrode materials, pseudocapacitive materials, such as transition-metal oxides, were introduced into the carbon frameworks. In this review, recent advances in the fabrication of nanoarchitectured porous carbons and metal oxides through various approaches for supercapacitor applications are summarized.
The formation of nano-layered grains and their enhanced superconducting transition temperature in Mg-doped FeSe 0.9 bulks
Publisher: Springer Science and Business Media LLC
Date: 26-09-2014
DOI: 10.1038/SREP06481
Superparamagnetic nanoarchitectures for disease-specific biomarker detection
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9CS00174C
Abstract: Synthesis, bio-functionalization, and multifunctional activities of superparamagnetic-nanostructures have been extensively reviewed with a particular emphasis on their uses in a range of disease-specific biomarker detection and associated challenges.
A comprehensive study of the pinning mechanisms of MgB2 wires treated with malic acid and their relationships with lattice defects
Publisher: IOP Publishing
Date: 07-2013
Tuning graphene for energy and environmental applications: Oxygen reduction reaction and greenhouse gas mitigation
Publisher: Elsevier BV
Date: 10-2016
Gold Nanoparticles Supported on Mesoporous Titania Thin Films with High Loading as a CO Oxidation Catalyst
Publisher: Wiley
Date: 28-03-2017
Abstract: In the present work, 2.4 nm gold nanoparticles (Au NPs) are uniformly dispersed on mesoporous titania thin films which are structurally tuned by controlling the calcination temperature. The gold content of the catalyst is as high as 27.8 wt %. To our knowledge, such a high loading of Au NPs with good dispersity has not been reported until now. Furthermore, the reaction rate of the gold particles is enhanced by one order of magnitude when supported on mesoporous titania compared to non-porous titania. This significant improvement can be explained by an increase in the diffusivity of the substrate due to the presence of mesopores, the resistance to agglomeration, and improved oxygen activation.
Synthesis and Cytotoxicity of Dendritic Platinum Nanoparticles with HEK-293 Cells
Publisher: Wiley
Date: 02-12-2016
Abstract: Dendritic platinum nanoparticles (DPNs) have been synthesized from l-ascorbic acid and an hiphilic non-ionic surfactant (Brij-58) via a sonochemical method. The particle size and shape of the DPNs could be tuned by changing the reduction temperature, resulting in a uniform DPN with a size of 23 nm or 60 nm. The facets of DPNs have been studied by high-resolution transmission electron microscopy. The cytotoxicity of DPNs has been investigated using human embryonic kidney cells (HEK-293), and the biological adaptability exhibited by DPNs has opened a pathway to biomedical applications such as drug-delivery systems, photothermal treatment, and biosensors.
The roles of CHPD: Superior critical current density and n-value obtained in binary in situ MgB2 cables
Publisher: IOP Publishing
Date: 19-08-2014
Synthesis of CdS/ZnO hybrid nanoarchitectured films with visible photocatalytic activity
Publisher: The Chemical Society of Japan
Date: 15-10-2018
Nanotechnology and its medical applications: revisiting public policies from a regulatory perspective in Australia
Publisher: Walter de Gruyter GmbH
Date: 27-06-2017
Abstract: Nanobiotechnology is an immensely potential invention, which is expected to bring about revolutionary changes in many aspects of essential human needs including medical treatments and foods. Although the technology has passed through its embryonic stage, its medical applications in preparing and delivering drugs to target cells of human bodies to cure incurable diseases are still under scientific scrutiny. A 2007 study suggests that Australia needs to have a review of its regulatory framework for nanotechnology by 2017. This article examines the current regulation of nanotechnology and its medical applications in Australia, and observes that it would be premature to impose any stringent regulation at this stage on medical experimentations. We are of the view that an excessively precautionary policy may hinder further research, which is critical to discovering the benefit and harm with certainty. Hence, in the greater interest of the facilitation of research and affirmation of benefits of this technology, we recommend that adopting a hybrid regulatory method composed of self-regulation and accommodating government regulation would be an appropriate policy approach to the regulation of nanobiotechnology. We also accept the need for a set of internationally harmonized policy principles to guide our actions in relation to this technology.
Electrochemical biosensing strategies for DNA methylation analysis
Publisher: Elsevier BV
Date: 08-2017
DOI: 10.1016/J.BIOS.2017.02.026
Abstract: DNA methylation is one of the key epigenetic modifications of DNA that results from the enzymatic addition of a methyl group at the fifth carbon of the cytosine base. It plays a crucial role in cellular development, genomic stability and gene expression. Aberrant DNA methylation is responsible for the pathogenesis of many diseases including cancers. Over the past several decades, many methodologies have been developed to detect DNA methylation. These methodologies range from classical molecular biology and optical approaches, such as bisulfite sequencing, microarrays, quantitative real-time PCR, colorimetry, Raman spectroscopy to the more recent electrochemical approaches. Among these, electrochemical approaches offer sensitive, simple, specific, rapid, and cost-effective analysis of DNA methylation. Additionally, electrochemical methods are highly amenable to miniaturization and possess the potential to be multiplexed. In recent years, several reviews have provided information on the detection strategies of DNA methylation. However, to date, there is no comprehensive evaluation of electrochemical DNA methylation detection strategies. Herein, we address the recent developments of electrochemical DNA methylation detection approaches. Furthermore, we highlight the major technical and biological challenges involved in these strategies and provide suggestions for the future direction of this important field.
Enhancement of the in-field Jc of MgB2 via SiCl 4 doping
Publisher: American Physical Society (APS)
Date: 15-06-2010
Development of High Current Capacity Mono-and 18-Filament in situ MgB2 Cables by Varying the Twist Pitch
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 10-2014
Periodically Arranged Arrays of Dendritic Pt Nanospheres Using Cage-Type Mesoporous Silica as a Hard Template
Publisher: Wiley
Date: 12-12-2017
Abstract: Dendritic Pt nanospheres of 20 nm diameter are synthesized by using a highly concentrated surfactant assembly within the large-sized cage-type mesopores of mesoporous silica (LP-FDU-12). After diluting the surfactant solution with ethanol, the lower viscosity leads to an improved penetration inside the mesopores. After Pt deposition followed by template removal, the arrangement of the Pt nanospheres is a replication from that of the mesopores in the original LP-FDU-12 template. Although it is well known that ordered LLCs can form on flat substrates, the confined space inside the mesopores hinders surfactant self-organization. Therefore, the Pt nanospheres possess a dendritic porous structure over the entire area. The distortion observed in some nanospheres is attributed to the close proximity existing between neighboring cage-type mesopores. This new type of nanoporous metal with a hierarchical architecture holds potential to enhance substance diffusivity/accessibility for further improvement of catalytic activity.
Viewpoint on fast creation of dense MgB2phase in wires made by internal Mg diffusion process
Publisher: IOP Publishing
Date: 18-11-2016
Magnetic nanoparticles for “smart liposomes”
Publisher: Springer Science and Business Media LLC
Date: 17-07-2015
DOI: 10.1007/S00249-015-1059-0
Abstract: Liposomal drug delivery systems (LDDSs) are promising tools used for the treatment of diseases where highly toxic pharmacological agents are administered. Currently, destabilising LDDSs by a specific stimulus at a target site remains a major challenge. The bacterial mechanosensitive channel of large conductance (MscL) presents an excellent candidate biomolecule that could be employed as a remotely controlled pore-forming nanovalve for triggered drug release from LDDSs. In this study, we developed superparamagnetic nanoparticles for activation of the MscL nanovalves by magnetic field. Synthesised CoFe2O4 nanoparticles with the radius less than 10 nm were labelled by SH groups for attachment to MscL. Activation of MscL by magnetic field with the nanoparticles attached was examined by the patch cl technique showing that the number of activated channels under r pressure increased upon application of the magnetic field. In addition, we have not observed any cytotoxicity of the nanoparticles in human cultured cells. Our study suggests the possibility of using magnetic nanoparticles as a specific trigger for activation of MscL nanovalves for drug release in LDDSs.
Gold-loaded nanoporous iron oxide nanocubes: A novel dispersible capture agent for tumor-associated autoantibody analysis in serum
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7NR03006A
Abstract: An electrochemical and colorimetric method for detecting autoantibodies using gold-loaded nanoporous Fe 2 O 3 nanocubes as capture agents is reported for the first time.
Strong competition between the δl and δtc flux pinning mechanisms in MgB2 doped with carbon containing compounds
Publisher: AIP Publishing
Date: 06-2010
DOI: 10.1063/1.3366710
Abstract: The transport and magnetic properties of 10 wt % malic acid and 5 wt % nanocarbon doped MgB2 have been studied by measuring the resistivity (ρ), critical current density (jc), connectivity factor (AF), irreversibility field (Hirr), and upper critical field (Hc2). The pinning mechanisms are studied in terms of the collective pinning model. It was found that both mean free path (δl) and critical temperature (δTc) pinning mechanisms coexist in both doped MgB2. For both the malic acid and nanocarbon doped s les, the temperature dependence of the crossover field, which separates the single vortex and the small bundle pinning regime, Bsb(T), shows that the δl pinning mechanism is dominant for temperatures up to t(T/Tc)=0.7 but the δTc pinning mechanism is dominant for t& .7. This tendency of coexistence of the δl and the δTc pinning mechanism is in strong contrast with the pure MgB2, in which the δTc pinning mechanism is dominant over a wide temperature range below Tc. It was also observed that the connectivity factor, active cross-sectional area fraction (AF), are 0.11 and 0.14 for the nanocarbon and the malic acid doped MgB2, respectively, indicating that there are still rooms for further improving jc performance.
Fabrication of Mesoporous Cu Films on Cu Foils and Their Applications to Dopamine Sensing
Publisher: Wiley
Date: 21-08-2017
Abstract: We previously succeeded to prepare stable mesoporous Cu films on Au-coated conductive working electrodes by using polystyrene-b-poly(oxyethylene) (PS
Multiwalled carbon nanotube-derived superior electrical, mechanical and thermal properties in MgB2 wires
Publisher: Elsevier BV
Date: 10-2014
Carbohydrate doping to enhance electromagnetic properties of MgB2 superconductors
Publisher: AIP Publishing
Date: 02-10-2006
DOI: 10.1063/1.2358947
Abstract: The effect of carbohydrate doping on lattice parameters, microstructure, Tc, Jc, Hirr, and Hc2 of MgB2 has been studied. In this work the authors used malic acid as an ex le of carbohydrates as an additive to MgB2. The advantages of carbohydrate doping include homogeneous mixing of precursor powders, avoidance of expansive nanoadditives, production of highly reactive C, and significant enhancement in Jc, Hirr, and Hc2 of MgB2, compared to undoped s les. The Jc for MgB2+30wt% C4H6O5 s le was increased by a factor of 21 at 5K and 8T without degradation of self-field Jc.
Nanoarchitecture Frameworks for Electrochemical miRNA Detection
Publisher: Elsevier BV
Date: 05-2019
DOI: 10.1016/J.TIBS.2018.11.012
Abstract: With revolutionary advances in next-generation sequencing, the human transcriptome has been comprehensively interrogated. These discoveries have highlighted the emerging functional and regulatory roles of a large fraction of RNAs suggesting the potential they might hold as stable and minimally invasive disease biomarkers. Although a plethora of molecular-biology- and biosensor-based RNA-detection strategies have been developed, clinical application of most of these is yet to be realized. Multifunctional nanomaterials coupled with sensitive and robust electrochemical readouts may prove useful in these applications. Here, we summarize the major contributions of engineered nanomaterials-based electrochemical biosensing strategies for the analysis of miRNAs. With special emphasis on nanostructure-based detection, this review also chronicles the needs and challenges of miRNA detection and provides a future perspective on the presented strategies.
Enhancement of flux pinning in a MgB2 superconductor doped with tartaric acid
Publisher: IOP Publishing
Date: 14-12-2007
Self‐Assembly of Polymeric Micelles Made of Asymmetric Polystyrene‐ b ‐Polyacrylic Acid‐ b ‐Polyethylene Oxide for the Synthesis of Mesopo
Publisher: Wiley
Date: 10-03-2017
Cyano-Bridged Trimetallic Coordination Polymer Nanoparticles and Their Thermal Decomposition into Nanoporous Spinel Ferromagnetic Oxides
Publisher: Wiley
Date: 04-09-2016
Abstract: The synthesis of a novel family of cyano-bridged trimetallic coordination polymers (CPs) with various compositions and shapes has been reported by changing the compositional ratios of Fe, Co, and Ni species in the reaction system. In order to efficiently control the nucleation rate and the crystal growth, trisodium citrate dihydrate plays an important role as a chelating agent. After the obtained cyano-bridged trimetallic CPs undergo thermal treatment in air at three different temperatures (250, 350, and 450 °C), nanoporous spinel metal oxides are successfully obtained. Interestingly, the obtained nanoporous metal oxides are composed of small crstalline grains, and the grains are oriented in the same direction, realizing pseudo-single crystals with nanopores. The resultant nanoporous spinel oxides feature interesting magnetic properties. Cyano-bridged multimetallic CPs with various sizes and shapes can provide a pathway toward functional nanoporous metal oxides that are not attainable from simple cyano-bridged CPs containing single metal ions.
Flux-pinning mechanism in silicone-oil-doped MgB2: Evidence for charge-carrier mean free path fluctuation pinning
Publisher: American Physical Society (APS)
Date: 03-11-2008
Glucose isomerization catalyzed by bone char and the selective production of 5-hydroxymethylfurfural in aqueous media
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8SE00339D
Abstract: Glucose isomerization and selective production of 5-hydroxymethylfurfural in aqueous media, using combined catalysis of bone char and acidic ionic liquid.
The isotope effect of boron on the carbon doping and critical current density of Mg11B2superconductors
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C6TC05086G
Abstract: Carbon doping fails to increase the critical current density of isotope Mg 11 B 2 superconductors.
The new resistance jump: The detection of damage in Nb barrier in MgB2 wires
Publisher: Elsevier BV
Date: 12-2015
A New Generation of In Situ ${\rm MgB}_{2}$ Wires With Improved $J_{\rm c}$ and $B_{\rm irr}$ Values Obtained by Cold Densification (CHPD)
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 06-2011
The effects of sintering temperature on superconductivity in MgB 2/Fe wires
Publisher: IOP Publishing
Date: 27-03-2007
Three-Dimensional Networked Metal–Organic Frameworks with Conductive Polypyrrole Tubes for Flexible Supercapacitors
Publisher: American Chemical Society (ACS)
Date: 30-10-2017
Abstract: Metal-organic frameworks (MOFs) with high porosity and a regular porous structure have emerged as a promising electrode material for supercapacitors, but their poor electrical conductivity limits their utilization efficiency and capacitive performance. To increase the overall electrical conductivity as well as the efficiency of MOF particles, three-dimensional networked MOFs are developed via using preprepared conductive polypyrrole (PPy) tubes as the support for in situ growth of MOF particles. As a result, the highly conductive PPy tubes that run through the MOF particles not only increase the electron transfer between MOF particles and maintain the high effective porosity of the MOFs but also endow the MOFs with flexibility. Promoted by such elaborately designed MOF-PPy networks, the specific capacitance of MOF particles has been increased from 99.2 F g
Collaboration between Mathematicians and Mathematics Educators: dialogical inquiry as a methodological tool in Mathematics Education research
Publisher: Springer Science and Business Media LLC
Date: 26-06-2023
DOI: 10.1007/S10649-023-10245-W
Abstract: Collaboration between Mathematicians and Mathematics Educators is crucial in advancing knowledge on the teaching and learning of Mathematics, particularly in advanced Mathematics pedagogy. However, there is a need for the type of collaborations where Mathematicians and Mathematics Educators can find common ground, and the synergy of their expertise results in new, hybrid meanings and understandings that can benefit practice. This paper aims to help researchers from these communities come together by presenting a novel methodology for collaborative inquiry and qualitative data analysis— dialogical inquiry —based on Mikhail Bakhtin’s theory of dialogism. In this framework, “truth” is conceived as never finalised but always coevolving through dialogue that involves participants with different “voices” and “languages”. We describe the three principles that underpin dialogical inquiry : motivation, power balance and a process for solving disagreements. These three principles interact together to create a space where critically productive dialogue allows for meanings to coevolve and new, hybrid understandings to emerge. We illustrate our operationalisation of these principles (i.e., the methods of dialogical inquiry ) in two areas: understanding solutions to linear ordinary differential equations and making meaning of the Bakhtinian concept of superaddressee. We reflect on our use of this methodology in Mathematics Education research and invite the readers to create their own dialogic spaces of collaboration.
Sensitive Detection of Motor Neuron Disease Derived Exosomal miRNA Using Electrocatalytic Activity of Gold‐Loaded Superparamagnetic Ferric Oxide Nanocubes
Publisher: Wiley
Date: 17-08-2020
Systematic study of a MgB2+C4H6O 5 superconductor prepared by the chemical solution route
Publisher: IOP Publishing
Date: 08-06-2007
Synthesis of Carbon Nanospheres Through Carbonization of Areca nut
Publisher: American Scientific Publishers
Date: 04-2017
Abstract: We demonstrate a bio-inspired one-pot synthesis of carbon nanospheres with micro-porosity achieved from a promising carbon-rich source (Areca nut) using direct pyrolysis in nitrogen atmosphere at 550 °C in a tube-furnace without adding any catalysts. The resultant carbon spheres are highly monodispersed, uniformly shaped and possess good absorption behaviour (10.5 mg · g−1) for methylene blue (MB).
Tunable porosity in bimetallic core-shell structured palladium-platinum nanoparticles for electrocatalysts
Publisher: Elsevier BV
Date: 2019
Soft-Templated Synthesis of Sheet-Like Nanoporous Nitrogen-Doped Carbons for Electrochemical Supercapacitors
Publisher: Wiley
Date: 15-03-2019
Bioelectromagnetics research within an Australian context: The Australian centre for electromagnetic bioeffects research (ACEBR)
Publisher: MDPI AG
Date: 29-09-2016
Interplay between boron precursors and Ni–Co–B nanoparticle doping in the fabrication of MgB2 superconductor with improved electromagnetic properties
Publisher: Elsevier BV
Date: 11-2014
Enlarging the porosity of metal–organic framework-derived carbons for supercapacitor applications by a template-free ethylene glycol etching method
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D2TA06307G
Abstract: Enlargement of micropores in zeolitic imidazolate framework particles into mesopores is achieved via an ethylene glycol-assisted aqueous etching method. The etched carbon shows a higher specific capacitance than unetched one at high scan rates.
Lignocellulosic biomass-derived, graphene sheet-like porous activated carbon for electrochemical supercapacitor and catechin sensing
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7RA07810B
Abstract: We synthesize graphene sheet-like porous activated carbon (GPAC) with a high specific surface area by using Bougainvillea spectabilis as a precursor with the assistance of a facile and reliable chemical activation method.
Superior critical current density obtained in MgB2 bulks through low-cost carbon-encapsulated boron powder
Publisher: Elsevier BV
Date: 07-2015
Formation of mesopores inside platinum nanospheres by using double hydrophilic block copolymers
Publisher: Elsevier BV
Date: 11-2016
Synthesis of mesostructured manganese phosphonate and its promising energy storage application
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7TA07034A
Abstract: Mesostructured manganese phosphonate (MnP) with a uniform nanorod morphology has been prepared through an easy surfactant-mediated procedure.
Erratum: Bending of CORC® cables and wires: finite element parametric study and experimental validation (2018 Supercond. Sci. Technol. 31 115006)
Publisher: IOP Publishing
Date: 22-10-2018
Fabrication of Nanoporous Carbon Materials with Hard- and Soft-Templating Approaches: A Review
Publisher: American Scientific Publishers
Date: 07-2019
Abstract: Hard- and soft-templating approaches are one of potential strategies for the fabrication of functional nanoporous carbon materials with desired morphologies and properties. Enormous efforts have been paid for understanding the synthetic mechanisms that strongly influence the materials design and applications. All of these investigations are crucial to encourage the application of hard- and soft-templating approaches for the precise synthesis of nanoporous carbon materials. In this review, we mainly summarize significant works employing different synthetic methods for making carbon materials with various pore sizes and functionalities. The content of the review article contains: (i) Hard-templating synthesis of microporous carbon from zeolites (ii) Hard-templating synthesis of mesoporous carbon from mesoporous silica (iii) Hard-templating synthesis of macroporous carbon and (iv) Soft-templating synthesis of mesoporous carbon. This review aims to provide a detailed glimpse of hard- and soft-templating approaches for future development of functional nanoporous carbon materials.
Facile potentiostatic preparation of functionalized polyterthiophene-anchored graphene oxide as a metal-free electrocatalyst for the oxygen reduction reaction
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C4TA06774F
Abstract: A new polyterthiophene-anchored GO electrocatalyst was prepared. The C–N bonds of the polymer served as active sites for the ORR catalyst.
Synthesis-Dependent Surface Defects and Morphology of Hematite Nanoparticles and Their Effect on Cytotoxicity in Vitro
Publisher: American Chemical Society (ACS)
Date: 24-02-2016
Abstract: In this study, we investigate the toxicity of hematite (α-Fe2O3) nanoparticles on the Madin-Darby Canine Kidney (MDCK) cell line. The oxide particles have been synthesized through two different methods and annealing conditions. These two methods, spray precipitation and precipitation, resulted in particles with rod-like and spherical morphology and feature different particle sizes, surface features, and magnetic properties. Through flow cytometry it was found that particle morphology heavily influences the degree to which the nanomaterials are internalized into the cells. It was also found that the ability of the nanoparticles to generate free radicals species is hindered by the formation of tetrahedrally coordinated maghemite-like (γ-Fe2O3) spinel defects on the surfaces of the particles. The combination of these two factors resulted in variable cytotoxic effects of the hematite nanoparticles synthesized with different conditions. This article highlights the importance on the fabrication method, materials properties, and surface characteristics on the cytotoxicity of hematite nanomaterials.
Construction of AC/DC magnetic syringe device for stimulated drug release, injection and ejection of nanocarriers and testing cytotoxicity in vitro
Publisher: Elsevier BV
Date: 2021
Advances in bioconversion of microalgae with high biomass and lipid productivity
Publisher: Elsevier BV
Date: 10-2017
Effect of sintering temperature on structural defects and superconducting properties in MgB2 + C4 H6 O5
Publisher: IOP Publishing
Date: 02-2008
3D network of cellulose-based energy storage devices and related emerging applications
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C6MH00500D
Abstract: There has recently been a major thrust toward advanced research in the area of hierarchical carbon nanostructured electrodes derived from cellulosic resources, such as cellulose nanofibers (CNFs), which are accessible from natural cellulose and bacterial cellulose (BC).
Improvements in the Dispersion of Nanosilver in a MgB2 Matrix through a Graphene Oxide Net
Publisher: American Chemical Society (ACS)
Date: 04-05-2015
DOI: 10.1021/JP512165Q
The effects of annealing temperature on the in-field Jc and surface pinning in silicone oil doped MgB2 bulks and wires
Publisher: Elsevier BV
Date: 12-2012
Strategies for Improving the Functionality of Zeolitic Imidazolate Frameworks: Tailoring Nanoarchitectures for Functional Applications
Publisher: Wiley
Date: 18-08-2017
Abstract: Zeolitic imidazolate frameworks (ZIFs), a subclass of metal-organic frameworks (MOFs) built with tetrahedral metal ions and imidazolates, offer permanent porosity and high thermal and chemical stabilities. While ZIFs possess some attractive physical and chemical properties, it remains important to enhance their functionality for practical application. Here, an overview of the extensive strategies which have been developed to improve the functionality of ZIFs is provided, including linker modifications, functional hybridization of ZIFs via the encapsulation of guest species (such as metal and metal oxide nanoparticles and biomolecules) into ZIFs, and hybridization with polymeric matrices to form mixed matrix membranes for industrial gas and liquid separations. Furthermore, the developed strategies for achieving size and shape control of ZIF nanocrystals are considered, which are important for optimizing the textural characteristics as well as the functional performance of ZIFs and their derived materials/hybrids. Moreover, the recent trends of using ZIFs as templates for the derivation of nanoporous hybrid materials, including carbon/metal, carbon/oxide, carbon/sulfide, and carbon hosphide hybrids, are discussed. Finally, some perspectives on the potential future research directions and applications for ZIFs and ZIF-derived materials are offered.
Effect of Various Carbonization Temperatures on ZIF-67 Derived Nanoporous Carbons
Publisher: The Chemical Society of Japan
Date: 15-08-2017
Rationally designed bimetallic Au@Pt nanoparticles for glucose oxidation
Publisher: Springer Science and Business Media LLC
Date: 29-01-2019
DOI: 10.1038/S41598-018-36759-5
Abstract: Bimetallic nanoparticles (NPs) have aroused interest in various fields because of their synergetic and unique properties. Among those nanoparticles, we strategically approached and synthesized Au@Pt NPs via the sonochemical method with different molar ratios (e.g. 3:7, 5:5, and 7:3) of Au to Pt precursors. The particle structure was confirmed to be core-shell, and the size was estimated to be 60, 52, and 47 nm, respectively, for 3:7, 5:5, and 7:3 ratios of Au to Pt. The detailed structure and crystallinity of as-prepared Au@Pt NPs were further studied by scanning electron microscopy, transmission electron microscopy with element mapping, and X-ray diffraction. It should be noted that thickness of the dendritic Pt shell in the core-shell structure can be easily tuned by controlling the molar ratio of Au to Pt. To explore the possibility of this material as glucose sensor, we confirmed the detection of glucose using erometry. Two dynamic ranges in a calibration plot were displayed at 0.5–50.0 µM and 0.05–10.0 mM, and their detection limit as glucose sensor was determined to be 319.8 (±5.4) nM.
Continuous Mesoporous Pd Films by Electrochemical Deposition in Nonionic Micellar Solution
Publisher: American Chemical Society (ACS)
Date: 17-07-2017
Origin of thermally stable ferroelectricity in a porous barium titanate thin film synthesized through block copolymer templating
Publisher: AIP Publishing
Date: 07-2017
DOI: 10.1063/1.4995650
Abstract: A porous barium titanate (BaTiO3) thin film was chemically synthesized using a surfactant-assisted sol-gel method in which micelles of hipathic diblock copolymers served as structure-directing agents. In the Raman spectrum of the porous BaTiO3 thin film, a peak corresponding to the ferroelectric tetragonal phase was observed at around 710 cm−1, and it remained stable at much higher temperature than the Curie temperature of bulk single-crystal BaTiO3 (∼130 °C). Measurements revealed that the ferroelectricity of the BaTiO3 thin film has high thermal stability. By analyzing high-resolution transmission electron microscope images of the BaTiO3 thin film by the fast Fourier transform mapping method, the spatial distribution of stress in the BaTiO3 framework was clearly visualized. Careful analysis also indicated that the porosity in the BaTiO3 thin film introduced anisotropic compressive stress, which deformed the crystals. The resulting elongated unit cell caused further displacement of the Ti4+ cation from the center of the lattice. This displacement increased the electric dipole moment of the BaTiO3 thin film, effectively enhancing its ferro(piezo)electricity.
Controlled delivery of drugs adsorbed onto porous Fe 3 O 4 structures by application of AC/DC magnetic fields
Publisher: Elsevier BV
Date: 05-2016
Enhanced superconductivity induced by several-unit-cells diffusion in an FeTe/FeSe bilayer heterostructure
Publisher: American Physical Society (APS)
Date: 08-02-2019
Nanoarchitectured Graphene‐Organic Frameworks (GOFs): Synthetic Strategies, Properties, and Applications
Publisher: Wiley
Date: 18-10-2018
Abstract: Graphene-organic frameworks (GOFs) is a new class of graphene-based materials in which structure and properties can be designed by controlling the length and concentration of organic ligands, comparable to their tunable metal-organic frameworks (MOFs) counterpart. The structural properties (e.g., surface area, pore volume) and physico-chemical properties (e.g., electronic, thermal, and mechanical) of GOFs can be tuned based on the synthetic conditions. Such GOFs are promising as the next generation of novel materials for a wide range of potential applications such as H
The enhancedJcandBirrofin situMgB2wires and tapes alloyed with C4H6O5(malic acid) after cold high pressure densif
Publisher: IOP Publishing
Date: 05-08-2009
Improvement in the transport critical current density and microstructure of isotopic Mg11B2 monofilament wires by optimizing the sintering temperature
Publisher: Springer Science and Business Media LLC
Date: 08-11-2016
DOI: 10.1038/SREP36660
Abstract: Superconducting wires are widely used in fabricating magnetic coils in fusion reactors. In consideration of the stability of 11 B against neutron irradiation and lower induced radio-activation properties, MgB 2 superconductor with 11 B serving as boron source is an alternative candidate to be used in fusion reactor with severe irradiation environment. In present work, a batch of monofilament isotopic Mg 11 B 2 wires with amorphous 11 B powder as precursor were fabricated using powder-in-tube (PIT) process at different sintering temperature, and the evolution of their microstructure and corresponding superconducting properties was systemically investigated. Accordingly, the best transport critical current density ( J c ) = 2 × 10 4 A/cm 2 was obtained at 4.2 K and 5 T, which is even comparable to multi-filament Mg 11 B 2 isotope wires reported in other work. Surprisingly, transport J c vanished in our wire which was heat-treated at excessively high temperature (800 °C). Combined with microstructure observation, it was found that lots of big interconnected microcracks and voids that can isolate the MgB 2 grains formed in this whole s le, resulting in significant deterioration in inter-grain connectivity. The results can be a constructive guide in fabricating Mg 11 B 2 wires to be used as magnet coils in fusion reactor systems such as ITER-type tokamak magnet.
Evaluation of persistent-mode operation in a superconducting MgB2 coil in solid nitrogen
Publisher: IOP Publishing
Date: 22-02-2016
Electrochemical fabrication of mesoporous metal-alloy films
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D2MA00480A
Abstract: Electrochemical fabrication integrating templating strategies have paved the way for creating mesoporous metal alloy films with distinctive pores and functionalities for electrocatalysis, fuel cells, and sensor (bio) development.
Facile Synthesis of Palladium-Nanoparticle-Embedded N-Doped Carbon Fibers for Electrochemical Sensing
Publisher: Wiley
Date: 27-04-2018
Abstract: In recent years, there have been many studies on metal/carbon hybrid materials for electrochemical applications. However, reducing the metal content in catalysts is still a challenge. Here, a facile synthesis of palladium (Pd) nanoparticle-embedded N-doped carbon fibers (Pd/N-C) through electropolymerization and reduction methods is demonstrated. The as-prepared Pd/N-C contains only 1.5 wt % Pd. Under optimal conditions, bisphenol A is detected by using erometry in two dynamic ranges from 0.1 to 10 μm and from 10 to 200 μm, and the obtained correlation coefficients are close to 0.9836 and 0.9987, respectively. The detection limit (DL) for bisphenol A is determined to be 29.44 (±0.77) nm.
Mesoporous metallic rhodium nanoparticles
Publisher: Springer Science and Business Media LLC
Date: 19-05-2017
DOI: 10.1038/NCOMMS15581
Abstract: Mesoporous noble metals are an emerging class of cutting-edge nanostructured catalysts due to their abundant exposed active sites and highly accessible surfaces. Although various noble metal (e.g. Pt, Pd and Au) structures have been synthesized by hard- and soft-templating methods, mesoporous rhodium (Rh) nanoparticles have never been generated via chemical reduction, in part due to the relatively high surface energy of rhodium (Rh) metal. Here we describe a simple, scalable route to generate mesoporous Rh by chemical reduction on polymeric micelle templates [poly(ethylene oxide)- b -poly(methyl methacrylate) (PEO- b -PMMA)]. The mesoporous Rh nanoparticles exhibited a ∼2.6 times enhancement for the electrocatalytic oxidation of methanol compared to commercially available Rh catalyst. Surprisingly, the high surface area mesoporous structure of the Rh catalyst was thermally stable up to 400 °C. The combination of high surface area and thermal stability also enables superior catalytic activity for the remediation of nitric oxide (NO) in lean-burn exhaust containing high concentrations of O 2 .
Technical aspects of cold high pressure densification (CHPD) on long lengths of In Situ MgB2 wires with enhanced Jc values
Publisher: AIP
Date: 2012
DOI: 10.1063/1.4712116
Nanoarchitecture of MOF-derived nanoporous functional composites for hybrid supercapacitors
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7TA03356G
Abstract: A new nanoarchitecture approach based on metal–organic frameworks (MOFs) is reported that can achieve high electrochemical energy storage via utilizing both electric double-layer supercapacitive and pseudocapacitive properties within a single nanoporous composite particle.
Towards Vaporized Molecular Discrimination: A Quartz Crystal Microbalance (QCM) Sensor System Using Cobalt-Containing Mesoporous Graphitic Carbon
Publisher: Wiley
Date: 11-09-2014
Abstract: A recent study on nanoporous carbon based materials (J. Am. Chem. Soc. 2012, 134, 2864) showed that the presence of abundant graphitized sp(2) carbon species in the frameworks led to higher affinity for aromatic hydrocarbons than their aliphatic analogues. Herein, improved understanding of the sensitive and selective detection of aromatic substances by using mesoporous carbon (MPC)-based materials, combined with a quartz crystal microbalance (QCM) sensor system, was obtained. MPCs were synthesized by direct carbonization of mesoporous polymers prepared from resol through a soft templating approach with Pluronic F127. The carbon-based frameworks can be graphitized through the addition of a cobalt source to the precursor solution, according to the catalytic activity of the cobalt nanoparticles formed during the carbonization process. From the Raman data, the degree of the graphitization was clearly increased by increasing the cobalt content and elevating the carbonization temperature. From a QCM study, it was proved that the highly graphitized MPCs exhibited a higher affinity for aromatic hydrocarbons than their aliphatic analogues. By increasing the degree of graphitization in the carbon-based pore walls, the MPCs showed both larger adsorption uptake and faster sensor response towards toxic benzene and toluene vapors.
A Review on Iron Oxide‐Based Nanoarchitectures for Biomedical, Energy Storage, and Environmental Applications
Publisher: Wiley
Date: 25-03-2019
A PCR-free electrochemical method for messenger RNA detection in cancer tissue samples
Publisher: Elsevier BV
Date: 12-2017
DOI: 10.1016/J.BIOS.2017.06.051
Abstract: Despite having reliable and excellent diagnostic performances, the currently available messenger RNA (mRNA) detection methods mostly use enzymatic lification steps of the target mRNA which is generally affected by the s le manipulations, lification bias and longer assay time. This paper reports an lification-free electrochemical approach for the sensitive and selective detection of mRNA using a screen-printed gold electrode (SPE-Au). The target mRNA is selectively isolated by magnetic separation and adsorbed directly onto an unmodified SPE-Au. The surface-attached mRNA is then measured by differential pulse voltammetry (DPV) in the presence of [Fe(CN)
Synthesis of MOF‐525 Derived Nanoporous Carbons with Different Particle Sizes for Supercapacitor Application
Publisher: Wiley
Date: 04-10-2017
Abstract: Nanoporous carbon (NC) materials have attracted great research interest for supercapacitor applications, because of their excellent electrochemical and mechanical stability, good electrical conductivity, and high surface area. Although there are many reports on metal-organic framework (MOF)-derived carbon materials, previous synthetic studies have been hindered by imperfect control of particle sizes and shapes. Here, we show precise control of the particle sizes of MOF-525 from 100 nm to 750 nm. After conversion of MOF-525 to NC, the effects of variation of the particle size on the electrochemical performance have been carefully investigated. The results demonstrate that our NC is a potential candidate for practical supercapacitor applications.
Room temperature carbon monoxide oxidation based on two-dimensional gold-loaded mesoporous iron oxide nanoflakes
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8CC03639J
Abstract: A room-temperature catalyst for carbon monoxide oxidation based on gold-loaded mesoporous maghemite nanoflakes has been developed.
Effects of MgO on the Electronic and Superconducting Properties in Succinic Acid (C4H6O4) Doped MgB2 Bulks
Publisher: Springer Science and Business Media LLC
Date: 11-01-2013
Microstructural and crystallographic imperfections of MgB2 superconducting wire and their correlation with the critical current density
Publisher: AIP Publishing
Date: 2014
DOI: 10.1063/1.4862670
Abstract: A comprehensive study of the effects of structural imperfections in MgB2 superconducting wire has been conducted. As the sintering temperature becomes lower, the structural imperfections of the MgB2 material are increased, as reflected by detailed X-ray refinement and the normal state resistivity. The crystalline imperfections, caused by lattice disorder, directly affect the impurity scattering between the π and σ bands of MgB2, resulting in a larger upper critical field. In addition, low sintering temperature keeps the grain size small, which leads to a strong enhancement of pinning, and thereby, enhanced critical current density. Owing to both the impurity scattering and the grain boundary pinning, the critical current density, irreversibility field, and upper critical field are enhanced. Residual voids or porosities obviously remain in the MgB2, however, even at low sintering temperature, and thus block current transport paths.
A Facile Synthesis of Hematite Nanorods from Rice Starch and Their Application to Pb(II) Ions Removal
Publisher: Wiley
Date: 02-04-2019
Optical biosensing strategies for DNA methylation analysis
Publisher: Elsevier BV
Date: 06-2017
DOI: 10.1016/J.BIOS.2016.10.034
Abstract: DNA methylation is an epigenetic modification of DNA, where a methyl group is added at the fifth carbon of the cytosine base to form 5 methyl cytosine (5mC) without altering the DNA sequences. It plays important roles in regulating many cellular processes by modulating key genes expression. Alteration in DNA methylation patterns becomes particularly important in the aetiology of different diseases including cancers. Abnormal methylation pattern could contribute to the pathogenesis of cancer either by silencing key tumor suppressor genes or by activating oncogenes. Thus, DNA methylation biosensing can help in the better understanding of cancer prognosis and diagnosis and aid the development of therapies. Over the last few decades, a plethora of optical detection techniques have been developed for analyzing DNA methylation using fluorescence, Raman spectroscopy, surface plasmon resonance (SPR), electrochemiluminescence and colorimetric readouts. This paper aims to comprehensively review the optical strategies for DNA methylation detection. We also present an overview of the remaining challenges of optical strategies that still need to be focused along with the lesson learnt while working with these techniques.
The role of spin-phonon coupling in enhanced desorption kinetics of antioxidant flavonols from magnetic nanoparticles aggregates
Publisher: Elsevier BV
Date: 11-2019
A Simple Approach to Generate Hollow Carbon Nanospheres Loaded with Uniformly Dispersed Metal Nanoparticles
Publisher: Wiley
Date: 05-12-2017
Soft-templated synthesis of mesoporous nickel oxide using poly(styrene-block-acrylic acid-block-ethylene glycol) block copolymers
Publisher: Elsevier BV
Date: 11-2018
Significant Reduction in Thermal Conductivity and Improved Thermopower of Electron-Doped Ba1– x Lax TiO3 with Nanostructured Rectangular Pores
Publisher: Wiley
Date: 15-03-2021
Graphene-Oxide-Loaded Superparamagnetic Iron Oxide Nanoparticles for Ultrasensitive Electrocatalytic Detection of MicroRNA
Publisher: Wiley
Date: 27-06-2018
Evaluation of isotopic boron ( 11 B) for the fabrication of low activation Mg 11 B 2 supercondu
Publisher: Wiley
Date: 25-04-2020
DOI: 10.1111/JACE.17156
ZnO-loaded mesoporous silica (KIT-6) as an efficient solid catalyst for production of various substituted quinoxalines
Publisher: Elsevier BV
Date: 02-2017
High performance capacitive deionization electrodes based on ultrathin nitrogen-doped carbon/graphene nano-sandwiches
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7CC05673G
Abstract: Here, ultrathin nitrogen-doped carbon/graphene nano-sandwiches were synthesized by carbonization of graphene oxide-based nanosheets, which were fully covered with ultrasmall ZIF-8 nanocrystals.
Activated Porous Carbon Spheres with Customized Mesopores through Assembly of Diblock Copolymers for Electrochemical Capacitor
Publisher: American Chemical Society (ACS)
Date: 24-05-2017
Abstract: A series of porous carbon spheres with precisely adjustable mesopores (4-16 nm), high specific surface area (SSA, ∼2000 m
Prussian blue derived iron oxide nanoparticles wrapped in graphene oxide sheets for electrochemical supercapacitors
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7RA03179C
Abstract: This work reports the synthesis of hybrid materials combining graphene oxide (GO) sheets with Prussian blue (PB) nanoparticles which can be converted into porous GO/iron oxide hybrids for supercapacitor applications.
Superior transport Jc obtained in in-situ MgB2 wires by tailoring the starting materials and using a combined cold high pressure densification and hot isostatic pressure treatment
Publisher: Elsevier BV
Date: 03-2017
Efficient wide range electrochemical bisphenol-A sensor by self-supported dendritic platinum nanoparticles on screen-printed carbon electrode
Publisher: Elsevier BV
Date: 02-2018
MgB2 superconducting joints for persistent current operation
Publisher: IOP Publishing
Date: 07-05-2015
Gold nanoparticles supported on mesoporous iron oxide for enhanced CO oxidation reaction
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C7NR08895G
Abstract: Herein, we report the synthesis of gold (Au)-loaded mesoporous iron oxide (Fe 2 O 3 ) as a catalyst for both CO and NH 3 oxidation.
Microstructural and superconducting properties of C6H6 added bulk MgB2 superconductor
Publisher: Elsevier BV
Date: 10-2012
Avoiding Pre-Isolation Step in Exosome Analysis: Direct Isolation and Sensitive Detection of Exosomes Using Gold-Loaded Nanoporous Ferric Oxide Nanozymes
Publisher: American Chemical Society (ACS)
Date: 08-02-2019
DOI: 10.1021/ACS.ANALCHEM.8B03619
Abstract: Most of the current exosome-analysis strategies are time-consuming and largely dependent on commercial extraction kit-based preisolation step, which requires extensive s le manipulations, costly isolation kits, reagents, tedious procedures, and sophisticated equipment and is prone to bias/artifacts. Herein we introduce a simple method for direct isolation and subsequent detection of a specific population of exosomes using an engineered superparamagnetic material with multifunctional properties, namely, gold-loaded ferric oxide nanocubes (Au-NPFe
Strong enhancement ofJcandBirrin binaryin situMgB2wires after cold high pressure densification
Publisher: IOP Publishing
Date: 23-06-2009
Solid cryogen: A cooling system for future MgB 2 MRI magnet
Publisher: Springer Science and Business Media LLC
Date: 02-03-2017
DOI: 10.1038/SREP43444
Abstract: An efficient cooling system and the superconducting magnet are essential components of magnetic resonance imaging (MRI) technology. Herein, we report a solid nitrogen (SN 2 ) cooling system as a valuable cryogenic feature, which is targeted for easy usability and stable operation under unreliable power source conditions, in conjunction with a magnesium diboride (MgB 2 ) superconducting magnet. The rationally designed MgB 2 /SN 2 cooling system was first considered by conducting a finite element analysis simulation, and then a demonstrator coil was empirically tested under the same conditions. In the SN 2 cooling system design, a wide temperature distribution on the SN 2 chamber was observed due to the low thermal conductivity of the stainless steel components. To overcome this temperature distribution, a copper flange was introduced to enhance the temperature uniformity of the SN 2 chamber. In the coil testing, an operating current as high as 200 A was applied at 28 K (below the critical current) without any operating or thermal issues. This work was performed to further the development of SN 2 cooled MgB 2 superconducting coils for MRI applications.
Au decorated core-shell structured Au@Pt for the glucose oxidation reaction
Publisher: Elsevier BV
Date: 2019
Pseudocapacitive behavior of the Fe2O3 anode and its contribution to high reversible capacity in lithium ion batteries
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8NR04871A
Abstract: Pseudocapacitance, which is the storage of charge based on continuous and fast reversible redox reactions at the surface of the electrodes, is commonly observed in transition metal oxide based LIB anodes.
Transparent crystalline cubic SiC-on-glass electrodes enable simultaneous electrochemistry and optical microscopy
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9CC03082D
Abstract: This work introduces transparent SiC-on-glass as a new platform for biosensing applications which enables cell culturing, stimulating, microscopy-imaging and bioelectrochemical detection.
Mesoporous Iron Oxide Synthesized Using Poly(styrene-b-acrylic acid-b-ethylene glycol) Block Copolymer Micelles as Templates for Colorimetric and Electrochemical Detection of Glucose
Publisher: American Chemical Society (ACS)
Date: 19-12-2017
Abstract: Herein, we report the soft-templated preparation of mesoporous iron oxide using an asymmetric poly(styrene-b-acrylic acid-b-ethylene glycol) (PS-b-PAA-b-PEG) triblock copolymer. This polymer forms a micelle consisting of a PS core, a PAA shell, and a PEG corona in aqueous solutions, which can serve as a soft template. The mesoporous iron oxide obtained at an optimized calcination temperature of 400 °C exhibited an average pore diameter of 39 nm, with large specific surface area and pore volume of 86.9 m
‘I’m still making dots for them’: mathematics lecturers’ views on their mathematical modelling practices
Publisher: Informa UK Limited
Date: 25-09-2019
Mesoporous Bimetallic RhCu Alloy Nanospheres Using a Sophisticated Soft-Templating Strategy
Publisher: American Chemical Society (ACS)
Date: 10-01-2018
A new approach to a superconducting joining process for carbon-doped MgB2 conductor
Publisher: IOP Publishing
Date: 14-07-2016
New types of high field pinning centers and pinning centers for the peak effect
Publisher: IOP Publishing
Date: 14-07-2017
Enhancement of superconductivity in the sintered FeSe0.5Te0.5 bulks with proper amount of Sn addition
Publisher: Elsevier BV
Date: 06-2015
Ag-doped FeSe0.94polycrystalline samples obtained through hot isostatic pressing with improved grain connectivity
Publisher: IOP Publishing
Date: 21-07-2016
Facile synthesis of nanoporous Li1+xV1−xO2@C composites as promising anode materials for lithium-ion batteries
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C6CP08827A
Abstract: Nanoporous anode materials with composition Li 1+x V 1−x O 2 @C have been prepared under mild synthetic conditions for lithium-ion batteries (LIBs).
Doping-induced isotopic Mg11B2 bulk superconductor for fusion application
Publisher: MDPI AG
Date: 21-03-2017
DOI: 10.3390/EN10030409
Quantification of gene-specific DNA methylation in oesophageal cancer via electrochemistry
Publisher: Elsevier BV
Date: 07-2017
DOI: 10.1016/J.ACA.2017.04.034
Abstract: Development of simple and inexpensive method for the analysis of gene-specific DNA methylation is important for the diagnosis and prognosis of patients with cancer. Herein, we report a relatively simple and inexpensive electrochemical method for the sensitive and selective detection of gene-specific DNA methylation in oesophageal cancer. The underlying principle of the method relies on the affinity interaction between DNA bases and unmodified gold electrode. Since the affinity trend of DNA bases towards the gold surface follows as adenine (A) > cytosine (C) > guanine (G)> thymine (T), a relatively larger amount of bisulfite-treated adenine-enriched unmethylated DNA adsorbs on the screen-printed gold electrodes (SPE-Au) in comparison to the guanine-enriched methylated s le. The methylation levels were (i.e., different level of surface attached DNA molecules due to the base dependent differential adsorption pattern) quantified by measuring saturated amount of charge-compensating [Ru(NH
Experimental research on electric field jump in low magnetic fields: Detection of damage in new ex-situ MgB2 barriers in MgB2 wires
Publisher: Elsevier BV
Date: 10-2015
An Electrochemical Method for the Detection of Disease-Specific Exosomes
Publisher: Wiley
Date: 30-08-2017
Comparison of Levitation Forces of Bulk MgB2 Superconductors Produced by Nano Boron and Carbon-Doped Nano Boron
Publisher: Springer Science and Business Media LLC
Date: 17-06-2014
Trifunctional Fe3O4/CaP/Alginate Core–Shell–Corona Nanoparticles for Magnetically Guided, pH-Responsive, and Chemically Targeted Chemotherapy
Publisher: American Chemical Society (ACS)
Date: 24-08-2017
Template Free Preparation of Heteroatoms Doped Carbon Spheres with Trace Fe for Efficient Oxygen Reduction Reaction and Supercapacitor
Publisher: Wiley
Date: 07-11-2016
Mesostructured fullerene crystals through inverse polymeric micelle assembly
Publisher: Elsevier BV
Date: 12-2017
Electrochemical supermolecular templating of mesoporous Rh films
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9NR03644J
Abstract: Making mesoporous rhodium (Rh) with traditional soft-templating methods is challenging because Rh has a high surface energy compared to other metals.
Power-law relationship between critical current density, microstructure, and the n-value in MgB 2 superconductor wires
Publisher: Springer Science and Business Media LLC
Date: 15-02-2014
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