Browsing School of Physics by Author "DUESBERG, GEORG"
Now showing items 1-20 of 22
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All-printed thin-film transistors from networks of liquid-exfoliated nanosheets
COLEMAN, JONATHAN; NICOLOSI, VALERIA; GODWIN, IAN; DUESBERG, GEORG (2017) -
Basal-Plane Functionalization of Chemically Exfoliated Molybdenum Disulfide by Diazonium Salts
DUESBERG, GEORG; COLEMAN, JONATHAN; NICOLOSI, VALERIA; SANVITO, STEFANO; MC EVOY, NIALL (2015) -
A Commercial Conducting Polymer as Both Binder and Conductive Additive for Silicon Nanoparticle-Based Lithium-Ion Battery Negative Electrodes
COLEMAN, JONATHAN; NICOLOSI, VALERIA; DUESBERG, GEORG; MCEVOY, NIALL (2016)This work describes silicon nanoparticle-based lithium-ion battery negative electrodes where multiple non-active electrode additives (usually carbon black and an inert polymer binder) are replaced with a single conductive ... -
A comparison of catabolic pathways induced in primary macrophages by pristine single walled carbon nanotubes and pristine graphene
COLEMAN, JONATHAN; NICOLOSI, VALERIA; VOLKOV, YURI; O'NEILL, LUKE; MCGOVERN, IGNATIUS; NERL, HANNAH; DUESBERG, GEORG; MCEVOY, NIALL (2016)Understanding the correlation between the physico-chemical properties of carbonaceous nanomaterials and how these properties impact on cells and subcellular mechanisms is critical to their risk assessment and safe translation ... -
DMF-exfoliated graphene for electrochemical NADH detection
COLEMAN, JONATHAN; KEELEY, GARETH; O'NEILL, ARLENE; DUESBERG, GEORG (2011)The electrochemical detection of NADH is of considerable interest because it is required as a cofactor in a large number of dehydrogenase-based biosensors. However, the presence of oxygenated functionalities on the electrode ... -
Effect of percolation on the capacitance of supercapacitor electrodes prepared from composites of manganese dioxide nanoplatelets and carbon nanotubes
COLEMAN, JONATHAN; BERNER, NINA; DUESBERG, GEORG; NICOLOSI, VALERIA; MCEVOY, NIALL (2014)Here we demonstrate significant improvements in the performance of supercapacitor electrodes based on 2D MnO2 nano-platelets by the addition of carbon nanotubes. Electrodes based on MnO2 nano-platelets do not display high ... -
Hot-Volumes as Uniform and Reproducible SERS-Detection Enhancers in Weakly-Coupled Metallic Nanohelices
KRSTIC, VOJISLAV; DONEGAN, JOHN; DUESBERG, GEORG; MC CLOSKEY, DAVID (2017)Reproducible and enhanced optical detection of molecules in low concentrations demands simultaneously intense and homogeneous electric fields acting as robust signal amplifiers. To generate such sophisticated optical ... -
Large magnetoresistance in few layer graphene stacks with current perpendicular to plane geometry
CROSS, GRAHAM; DUESBERG, GEORG; SHVETS, IGOR; WU, HAN-CHUN (2012)Large magnetoresistance (MR) effect of few layers graphene between two non-magnetic metal electrodes with current perpendicular to graphene plane was studied. A non-saturation and anisotropic MR with the value over 60% at ... -
Large variations in both dark- and photoconductivity in nanosheet networks as nanomaterial is varied from MoS2 to WTe2
COLEMAN, JONATHAN; DUESBERG, GEORG; MCEVOY, NIALL (2015)We have used solution processing techniques to fabricate thin-film networks of nanosheets of six different transition metal dichalcogenides; MoS2, MoSe2, MoTe2, WS2, WSe2 and WTe2. We have measured both the dark conductivity ... -
Large-Scale Exfoliation of Inorganic Layered Compounds in Aqueous Surfactant Solutions
COLEMAN, JONATHAN; WANG, JING; KHAN, UMAR; NICOLOSI, VALERIA; DUESBERG, GEORG (2011)Thumbnail image of graphical abstract A method to exfoliate MoS2 in large quantities in surfactant-water solutions is described. The layered material tends to be exfoliated as dispersions of thin, relatively defect-free ... -
Lateral Size Selection of Surfactant-Stabilised Graphene Flakes using Size Exclusion Chromatography
WIRTZ, CHRISTIAN; DUESBERG, GEORG; COLEMAN, JONATHAN; SMITH , RONAN JAMES (2012)Aqueous dispersions of graphene, stabilised by a surfactant, have been separated according to lateral flake size using size exclusion chromatography. Transition electron microscopy was used to characterise the flake size ... -
Long-chain amine-templated synthesis of gallium sulfide and gallium selenide nanotubes
COLEMAN, JONATHAN; NICOLOSI, VALERIA; RODE, KARSTEN; NERL, HANNAH; POKLE, ANUJ; DUESBERG, GEORG; MCEVOY, NIALL (2016)We describe the soft chemistry synthesis of amine-templated gallium chalcogenide nanotubes through the reaction of gallium(iii) acetylacetonate and the chalcogen (sulfur, selenium) using a mixture of long-chain amines ... -
Mapping of Low-Frequency Raman Modes in CVD-Grown Transition Metal Dichalcogenides: Layer Number, Stacking Orientation and Resonant Effects
MCEVOY, NIALL; COLEMAN, JONATHAN; DUESBERG, GEORG (2016)Layered inorganic materials, such as the transition metal dichalcogenides (TMDs), have attracted much attention due to their exceptional electronic and optical properties. Reliable synthesis and characterization of these ... -
Nitrogen-doped pyrolytic carbon films as highly electrochemically active electrodes.
DUESBERG, GEORG; MCGUINNESS, CORMAC; MCEVOY, NIALL (2013)Nitrogen-doped Pyrolytic Carbon (N-PyC) films were employed as an electrode material in electrochemical applications. PyC was grown by via non-catalysed chemical vapour deposition and subsequently functionalised via exposure ... -
Percolation scaling in composites of exfoliated MoS 2 filled with nanotubes and graphene
COLEMAN, JONATHAN; DUESBERG, GEORG; MCEVOY, NIALL (2012)Applications of films of exfoliated layered compounds in many areas will be limited by their relatively low electrical conductivity. To address this, we have prepared and characterised composites of a nano-conductor ... -
Photoluminescence from Liquid-Exfoliated WS<inf>2</inf> Monomers in Poly(Vinyl Alcohol) Polymer Composites
COLEMAN, JONATHAN; DUESBERG, GEORG (2016)While liquid phase exfoliation can be used to produce nanosheets stabilized in polymer solutions, very little is known about the resultant nanosheet size, thickness or monolayer content. Here we use semi-quantitative ... -
Production of Molybdenum Trioxide Nanosheets by Liquid Exfoliation and Their Application in High-Performance Supercapacitors
COLEMAN, JONATHAN; DUESBERG, GEORG; NICOLOSI, VALERIA; MCEVOY, NIALL; MENDOZA SANCHEZ, BEATRIZ (2014)Here, we demonstrate a simple method to exfoliate layered molybdenum trioxide (MoO3) crystallites to give multilayer MoO3 nanosheets dispersed in solvents. Exfoliation is achieved by sonicating MoO3 powder in the presence ... -
Production of Ni(OH)<inf>2</inf> nanosheets by liquid phase exfoliation: From optical properties to electrochemical applications
COLEMAN, JONATHAN; DONEGAN, JOHN; NICOLOSI, VALERIA; LYONS, MICHAEL; DUESBERG, GEORG; MCEVOY, NIALL; GODWIN, IAN (2016)Here we demonstrate that liquid phase exfoliation can be used to convert layered crystals of nickel hydroxide into Ni(OH)2 nanosheets in relatively large quantities and without the need for ion intercalation. While other ... -
Spin-dependent transport properties of Fe3O4/MoS2/Fe3O4 junctions.
SHVETS, IGOR; ZHANG, HONGZHOU; DUESBERG, GEORG; GATENSBY, RILEY (2015)Magnetite is a half-metal with a high Curie temperature of 858 K, making it a promising candidate for magnetic tunnel junctions (MTJs). Yet, initial efforts to exploit its half metallic nature in Fe3O4/MgO/Fe3O4 MTJ ... -
Thickness dependence and percolation scaling of hydrogen production rate in MoS<inf>2</inf> nanosheet and nanosheet-carbon nanotube composite catalytic electrodes
COLEMAN, JONATHAN; DUESBERG, GEORG; MC EVOY, NIALL (2016)