2023 |
Zimber N, Lammer J, Vladimirov P, Kothleitner G, Keast VJ, Dürrschnabel M, Klimenkov M, 'Hydrogen and helium trapping in hcp beryllium.', Commun Chem, 6 76 (2023) [C1]
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Nova |
2023 |
Tegg L, Keast VJ, 'A Review of Alkali Tungsten Bronze Nanoparticles for Applications in Plasmonics', Plasmonics, 18 49-71 (2023) [C1]
The optimal material for plasmonic applications is an electrical conductor with low damping losses, high chemical and thermal stability, simple low-cost synthetic methods, and a r... [more]
The optimal material for plasmonic applications is an electrical conductor with low damping losses, high chemical and thermal stability, simple low-cost synthetic methods, and a resonance frequency that can be tuned to suit a desired application. To date, plasmonic applications have predominantly relied on Au or Ag, but these materials are limited respectively by high damping losses and rapid corrosion. In the search for alternative plasmonic materials, the alkali tungsten bronzes have been identified as possible candidates, as they display many of the features of the optimal plasmonic material. In this review, we first describe the crystallography, electronic structure, synthesis methods and plasmonic behaviour of the tungsten bronzes. A range of plasmonic applications for tungsten bronze nanoparticles, including solar-control filtering, plasmonic photocatalysis and plasmonic photothermal therapy, are then discussed.
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Nova |
2022 |
McCourt LR, Routley BS, Ruppert MG, Keast VJ, Sathish CI, Borah R, et al., 'Single-Walled Carbon Nanotubes as One-Dimensional Scattering Surfaces for Measuring Point Spread Functions and Performance of Tip-Enhanced Raman Spectroscopy Probes', ACS APPLIED NANO MATERIALS, (2022) [C1]
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Nova |
2022 |
Keast VJ, 'Atmospheric Corrosion of Silver and Silver Nanoparticles', Corrosion and Materials Degradation, 3 221-234 [C1]
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Nova |
2022 |
Keast VJ, 'Corrosion processes of silver nanoparticles', Applied Nanoscience (Switzerland), 12 1859-1868 (2022) [C1]
The corrosion of silver nanoparticles (AgNPs) on exposure to ambient air was studied using imaging and analysis in the scanning transmission electron microscope (STEM). Secondary ... [more]
The corrosion of silver nanoparticles (AgNPs) on exposure to ambient air was studied using imaging and analysis in the scanning transmission electron microscope (STEM). Secondary particles are formed on exposure to ambient air, and these are more numerous and more widely distributed as the relative humidity increases. Energy-dispersive X-ray analysis (EDS) confirms that the particles contain Ag and S. Electron energy loss spectra (EELS) in the valence part of the spectrum (< ~ 50¿eV) identify the corrosion product as Ag2S on comparison with spectra from reference compounds. The EELS measurements also allow for a direct visualisation of the shift in the energy of the surface plasmon peak that occurs when the corrosion product is in contact with the particle. The experiments confirm that advanced electron microscopy methods have an important role in investigating corrosion of nanoparticulate systems.
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Nova |
2021 |
Tegg L, Haberfehlner G, Kothleitner G, Kisi E, Keast VJ, 'Crystal structures, electrical properties, and electron energy-loss spectroscopy of the sodium and potassium tetragonal tungsten bronzes', Journal of Alloys and Compounds, 868 (2021) [C1]
The tungsten bronzes (MxWO3) are non-stoichiometric metal oxides which have attracted interest for their potential applications in plasmonics. Although the cubic structures of the... [more]
The tungsten bronzes (MxWO3) are non-stoichiometric metal oxides which have attracted interest for their potential applications in plasmonics. Although the cubic structures of the sodium tungsten bronzes (NaxWO3) have been extensively studied, reports into the tetragonal-II structures (TII-) of any tungsten bronze are comparatively rare. In this work, TII-NaxWO3 and TII-KxWO3 were prepared by a furnace-assisted method, and characterised by X-ray and neutron powder diffraction, selected-area electron diffraction and electron energy-loss spectroscopy (EELS). A structural determination of TII-NaxWO3 was performed in the space group I4/m, in a 2×2×2 supercell of the P4/mbm TII-KxWO3 structure. Density functional theory is then used to calculate the valence electronic structure and optical properties to support the EELS measurements. Similar to the cubic structures, the conduction band of TII- is composed of hybridised O 2p and W 5d states, which is filled by electrons donated from the inserted Na or K. The O sites which are in-plane with the W sites are found to have highly localised bands, resulting in low-energy interband transitions in the a/b direction of the unit cell. In contrast, purely free-electron behaviour is observed in the c-direction below 2 eV. High-quality plasmon resonances are thus only observed in the c-direction, with energy and quality similar to those of the cubic structures. These anisotropic optical properties make TII-NaxWO3 and TII-KxWO3 interesting materials for further study as potential plasmonic materials.
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Nova |
2021 |
Chowdhury R, Tegg L, Keast VJ, Holmes NP, Cooling NA, Vaughan B, et al., 'Plasmonic enhancement of aqueous processed organic photovoltaics', RSC Advances, 11 19000-19011 (2021) [C1]
Sodium tungsten bronze (NaxWO3) is a promising alternative plasmonic material to nanoparticulate gold due to its strong plasmonic resonances in both the visible and near-infrared ... [more]
Sodium tungsten bronze (NaxWO3) is a promising alternative plasmonic material to nanoparticulate gold due to its strong plasmonic resonances in both the visible and near-infrared (NIR) regions. Additional benefits include its simple production either as a bulk or a nanoparticle material at a relatively low cost. In this work, plasmonic NaxWO3nanoparticles were introduced and mixed into the nanoparticulate zinc oxide electron transport layer of a water processed poly(3-hexylthiophene):phenyl-C61-butyric acid methyl ester (P3HT:PC61BM) nanoparticle (NP) based organic photovoltaic device (NP-OPV). The power conversion efficiency of NP-OPV devices with NaxWO3NPs added was found to improve by around 35% compared to the control devices, attributed to improved light absorption, resulting in an enhanced short circuit current and fill factor.
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Nova |
2021 |
Richardson PJ, Keast VJ, Cuskelly DT, Kisi EH, 'Theoretical and experimental investigation of the W-Al-B and Mo-Al-B systems to approach bulk WAlB synthesis', JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 41 1859-1868 (2021) [C1]
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Nova |
2021 |
Keast VJ, 'Gender Bias in New South Wales Higher School Certificate (HSC) Physics', AUSTRALIAN JOURNAL OF EDUCATION, 66 26-39 (2021) [C1]
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Nova |
2021 |
Tegg L, Cuskelly D, Studer AJ, Richardson P, Kisi E, Keast VJ, 'Intermediate Phases and Reaction Kinetics of the Furnace-Assisted Synthesis of Sodium Tungsten Bronze Nanoparticles', The Journal of Physical Chemistry C, 125 8185-8194 (2021) [C1]
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Nova |
2020 |
Cortie MB, Arnold MD, Keast VJ, 'The Quest for Zero Loss: Unconventional Materials for Plasmonics', Advanced Materials, 32 (2020) [C1]
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Nova |
2020 |
Tegg L, Keast VJ, 'Na
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Nova |
2020 |
Tegg L, Haberfehlner G, Kothleitner G, Keast VJ, 'Chemical homogeneity and optical properties of individual sodium tungsten bronze nanocubes.', Micron, 139 (2020) [C1]
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Nova |
2019 |
Shahcheraghi N, Gentle A, Supansomboon S, Keast V, Cortie MB, 'Localized surface plasmons in platinum aluminide semi-shells', NANO FUTURES, 3 (2019) [C1]
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Nova |
2018 |
Tegg L, Cuskelly D, Keast VJ, 'Plasmon Responses in the Sodium Tungsten Bronzes', PLASMONICS, 13 437-444 (2018) [C1]
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Nova |
2018 |
Tegg L, Cuskelly D, Keast VJ, 'Bulk scale fabrication of sodium tungsten bronze nanoparticles for applications in plasmonics', NANOTECHNOLOGY, 29 (2018) [C1]
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Nova |
2017 |
De Silva KSB, Keast VJ, Gentle A, Cortie MB, 'Optical properties and oxidation of alpha-phase Ag-Al thin films', NANOTECHNOLOGY, 28 (2017) [C1]
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Nova |
2017 |
Tegg L, Cuskelly D, Keast VJ, 'The sodium tungsten bronzes as plasmonic materials: fabrication, calculation and characterization', MATERIALS RESEARCH EXPRESS, 4 (2017) [C1]
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Nova |
2016 |
De Silva KSB, Keast VJ, Cortie MB, 'Effect of Al additions on the optical properties of Au a-phase', Journal of Alloys and Compounds, 679 225-230 (2016) [C1]
The effect of aluminium on the optical properties of AlxAu1-x (0 < x < 0.12) substitutional solid solutions is determined. Reflectance spectra and ellipsometric data of a ra... [more]
The effect of aluminium on the optical properties of AlxAu1-x (0 < x < 0.12) substitutional solid solutions is determined. Reflectance spectra and ellipsometric data of a range of compositions are measured and the dielectric functions extracted. Al additions flatten the reflection edge and increase optical loss in the Drude region. The implications of these changes for selected technological applications are investigated. Aluminium is found to be a very effective bleaching agent for Au and could have application for the formulation of improved 'white gold' jewellery alloys. However, due to its limited solubility in Au a-phase, other alloying additions would still be required to make a commercially acceptable 'white gold'. In contrast, the increased optical loss brought by the Al makes the alloys less suitable than pure Au for plasmonic applications or for spectrally selective coatings.
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Nova |
2016 |
Shahcheraghi N, Keast VJ, Gentle AR, Arnold MD, Cortie MB, 'Anomalously strong plasmon resonances in aluminium bronze by modification of the electronic density-of-states.', Journal of physics. Condensed matter : an Institute of Physics journal, 28 405501 (2016) [C1]
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Nova |
2016 |
Keast VJ, Walhout CJ, Pedersen T, Shahcheraghi N, Cortie MB, Mitchell DRG, 'Higher Order Plasmonic Modes Excited in Ag Triangular Nanoplates by an Electron Beam', PLASMONICS, 11 1081-1086 (2016) [C1]
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Nova |
2016 |
Keast VJ, Myles TA, Shahcheraghi N, Cortie MB, 'Corrosion processes of triangular silver nanoparticles compared to bulk silver', Journal of Nanoparticle Research, 18 1-11 (2016) [C1]
Excessive corrosion of silver nanoparticles is a significant impediment to their use in a variety of potential applications in the biosensing, plasmonic and antimicrobial fields. ... [more]
Excessive corrosion of silver nanoparticles is a significant impediment to their use in a variety of potential applications in the biosensing, plasmonic and antimicrobial fields. Here we examine the environmental degradation of triangular silver nanoparticles (AgNP) in laboratory air. In the early stages of corrosion, transmission electron microscopy shows that dissolution of the single-crystal, triangular, AgNP (side lengths 50¿120¿nm) is observed with the accompanying formation of smaller, polycrystalline Ag particles nearby. The new particles are then observed to corrode to Ag2S and after 21¿days nearly full corrosion has occurred, but some with minor Ag inclusions remaining. In contrast, a bulk Ag sheet, studied in cross section, showed an adherent corrosion layer of only around 20¿50¿nm in thickness after over a decade of being exposed to ambient air. The results have implications for antibacterial properties and ecotoxicology of AgNP during corrosion as the dissolution and reformation of Ag particles during corrosion will likely be accompanied by the release of Ag+ ions.
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Nova |
2015 |
Cuskelly DT, Richards ER, Kisi EH, Keast VJ, 'Ti3GaC2 and Ti3InC2: First bulk synthesis, DFT stability calculations and structural systematics', JOURNAL OF SOLID STATE CHEMISTRY, 230 418-425 (2015) [C1]
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Nova |
2015 |
De Silva KSB, Gentle A, Arnold M, Keast VJ, Cortie MB, 'Dielectric function and its predicted effect on localized plasmon resonances of equiatomic Au-Cu', Journal of Physics D: Applied Physics, 48 (2015) [C1]
Equiatomic (Au,Cu) solid solution orders below 658 K to form a tetragonal AuCu (I) phase with significant changes in physical properties and the crystal structure. The effect of o... [more]
Equiatomic (Au,Cu) solid solution orders below 658 K to form a tetragonal AuCu (I) phase with significant changes in physical properties and the crystal structure. The effect of ordering on the dielectric function of the material is controversial however, with inconsistent results reported in the literature. Since the nature of any localized surface plasmon resonance (LSPR) in the nanostructures is very sensitive to the dielectric function, this uncertainty hinders the use of AuCu in plasmonic devices or structures. Therefore, we re-examine the question using a combination of measurements and computations. We find that no significant change in the dielectric function occurs when this material becomes ordered, at least over the range of photon energies relevant to LSPRs. The likely properties of LSPRs in plasmonic devices made of AuCu are analyzed. Use of the alloy offers some advantages over pure Cu, however pure Au would still be the superior option in most situations.
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Nova |
2015 |
Keast VJ, Ewald J, De Silva KSB, Cortie MB, Monnier B, Cuskelly D, Kisi EH, 'Optical properties and electronic structure of the Cu-Zn brasses', Journal of Alloys and Compounds, 647 129-135 (2015) [C1]
The color of Cu-Zn brasses range from the red of copper through bright yellow to grey-silver as the Zn content increases. Here we examine the mechanism by which these color change... [more]
The color of Cu-Zn brasses range from the red of copper through bright yellow to grey-silver as the Zn content increases. Here we examine the mechanism by which these color changes occur. The optical properties of this set of alloys has been calculated using density functional theory (DFT) and compared to experimental spectroscopy measurements. The optical response of the low Zn content a-brasses is shown to have a distinctly different origin to that in the higher content ß', ¿ and e-brasses. The response of ß'-brass is unique in that it is strongly influenced by an overdamped plasmon excitation and this alloy will also have a strong surface plasmon response.
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Nova |
2015 |
Keast VJ, Wallace JW, Wrightson CJ, Tai M, Gentle A, Arnold MD, Cortie MB, 'The effect of vacancies on the optical properties of AuAl
AuAl2 is an intermetallic compound with a vivid purple colour attributable to a bulk plasmon energy in the visible part of the spectrum. However, the colour of as-deposited thin f... [more]
AuAl2 is an intermetallic compound with a vivid purple colour attributable to a bulk plasmon energy in the visible part of the spectrum. However, the colour of as-deposited thin films is not as strong and only develops upon annealing. Density functional theory calculations of the dielectric function are presented for a variety of vacancy types and concentrations. The results support the view that the effect of annealing on colour is correlated with a reduction in concentration of Al vacancies. The effect of vacancies on the optical properties can be understood as arising from the complex interplay between interband transitions around the Fermi level and the plasmon energy.
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Nova |
2015 |
Fletcher G, Arnold MD, Pedersen T, Keast VJ, Cortie MB, 'Multipolar and dark-mode plasmon resonances on drilled silver nano-triangles', Optics Express, 23 18002-18013 (2015) [C1]
Dark-mode plasmon resonances can be excited by positioning a suitable nano-antenna above a nanostructure to couple a planar incident wave-front into a virtual point source. We exp... [more]
Dark-mode plasmon resonances can be excited by positioning a suitable nano-antenna above a nanostructure to couple a planar incident wave-front into a virtual point source. We explore this phenomenon using a prototypical nanostructure consisting of a silver nanotriangle into which a hole has been drilled and a rod-like nano-antenna of variable aspect ratio. Using numerical simulations, we establish the behavior of the basic drilled nanotriangle under plane wave illumination and electron beam irradiation to provide a baseline, and then add the nano-antenna to investigate the stimulation of additional dark-mode plasmon resonances. The introduction of a suitably tuned nano-antenna provides a new and general means of exciting dark-mode resonances using plane wave light. The resulting system exhibits a very rich variety of radiant and sub-radiant resonance modes.
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Nova |
2014 |
McPherson DJ, Supansomboon S, Zwan B, Keast VJ, Cortie DL, Gentle A, et al., 'Strategies to control the spectral properties of Au-Ni thin films', THIN SOLID FILMS, 551 200-204 (2014) [C1]
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Nova |
2014 |
Keast VJ, Barnett RL, Cortie MB, 'First principles calculations of the optical and plasmonic response of Au alloys and intermetallic compounds', JOURNAL OF PHYSICS-CONDENSED MATTER, 26 (2014) [C1]
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Nova |
2014 |
Burgess RW, Keast VJ, 'TDDFT study of the optical absorption spectra of bare gold clusters', Journal of Physical Chemistry C, 118 3194-3201 (2014) [C1]
Time-dependent density functional theory (TDDFT) was used to calculate the optical absorption spectra of gold clusters of 20-171 atoms. The spectra for the smallest clusters agree... [more]
Time-dependent density functional theory (TDDFT) was used to calculate the optical absorption spectra of gold clusters of 20-171 atoms. The spectra for the smallest clusters agree with previous results, and the spectra for the largest clusters show features consistent with classical Mie theory. The systematic exploration of particles of sizes within these two extremes has allowed the trends linking optical absorption spectra and particle size and symmetry to be identified. A transition from molecular-like spectra to a more classical response is observed. © 2014 American Chemical Society.
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Nova |
2013 |
Keast VJ, Zwan B, Supansomboon S, Cortie MB, Persson POÅ, 'AuAl2 and PtAl2 as potential plasmonic materials', Journal of Alloys and Compounds, 577 581-586 (2013) [C1]
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Nova |
2013 |
Keast VJ, 'An introduction to the calculation of valence EELS: Quantum mechanical methods for bulk solids', MICRON, 44 93-100 (2013) [C1]
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Nova |
2013 |
Cortie MB, Coutts MJ, Ton-That C, Dowd A, Keast VJ, McDonagh AM, 'On the Coalescence of Nanoparticulate Gold Sinter Ink', JOURNAL OF PHYSICAL CHEMISTRY C, 117 11377-11384 (2013) [C1]
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Nova |
2012 |
Keast VJ, 'Application of EELS in materials science', Materials Characterization, 73 1-7 (2012) [C2]
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2012 |
Bosman M, Anstis GR, Keast VJ, Clarke JD, Cortie MB, 'Light splitting in nanoporous gold and silver', ACS Nano, 6 319-326 (2012) [C1]
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Nova |
2011 |
Burgess RW, Keast VJ, 'TDDFT study of the optical absorption spectra of bare and coated Au(55) and Au(69) clusters', Journal of Physical Chemistry C, 115 21016-21021 (2011) [C1]
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Nova |
2011 |
Keast VJ, Legge KA, Koch CT, Supansomboon S, Cortie MB, 'The role of plasmons and interband transitions in the color of AuAl(2), AuIn(2), and AuGa(2)', Applied Physics Letters, 99 (2011) [C1]
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Nova |
2011 |
Keast VJ, Gladys MJ, Petersen TC, Dwyer C, Koch CT, Haber T, Kothleitner G, 'Energy-filtered phase retrieval using the transport of intensity equation', Applied Physics Letters, 99 (2011) [C1]
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Nova |
2009 |
Bosman M, Tang LJ, Ye JD, Tan ST, Zhang Y, Keast VJ, 'Nanoscale band gap spectroscopy on ZnO and GaN-based compounds with a monochromated electron microscope', Applied Physics Letters, 95 101110 (2009) [C1]
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Nova |
2009 |
Bosman M, Keast VJ, Watanabe M, McCulloch DG, Shakerzadeh M, Teo EHT, Tay BK, 'Quantitative, nanoscale mapping of sp2 percentage and crystal orientation in carbon multilayers', Carbon, 47 94-101 (2009) [C1]
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Nova |
2009 |
Keast VJ, Harris S, Smith DK, 'Prediction of the stability of the Mn+1AXn phases from first principles', Physical Review B, 80 214113 (2009) [C1]
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Nova |
2008 |
Petersen TC, Bosman M, Keast VJ, Anstis GR, 'Plasmon resonances and electron phase shifts near Au nanospheres', Applied Physics Letters, 93 101909 (2008) [C1]
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Nova |
2008 |
Zeng A, Bilek MMM, McKenzie DR, Lay PA, La Fontaine A, Keast VJ, 'Correlation between film structures and potential limits for hydrogen and oxygen evolutions at a-C : N film electrochemical electrodes', Carbon, 46 663-670 (2008) [C1]
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Nova |
2008 |
Keast VJ, Bosman M, 'Applications and theoretical simulation of low-loss electron energy-loss spectra', Materials Science and Technology, 24 651-659 (2008) [C1]
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Nova |
2008 |
Petersen TC, Keast VJ, Paganin DJ, 'Quantitative TEM-based phase retrieval of MgO nano-cubes using the transport of intensity equation', Ultramicroscopy, 108 805-815 (2008) [C1]
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Nova |
2008 |
Bosman M, Keast VJ, 'Optimizing EELS acquisition', Ultramicroscopy, 108 837-846 (2008) [C1]
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Nova |
2008 |
Field MR, McCulloch DG, Lim SNH, Anders A, Keast VJ, Burgess RW, 'The electronic structure of tungsten oxide thin films prepared by pulsed cathodic arc deposition and plasma-assisted pulsed magnetron sputtering', Journal of Physics: Condensed Matter, 20 175216 (2008) [C1]
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Nova |
2007 |
Petersen TC, Keast VJ, 'Astigmatic intensity equation for electron microscopy based phase retrieval', Ultramicroscopy, 107 635-643 (2007) [C1]
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2007 |
Bosman M, Keast VJ, Watanabe M, Maaroof AI, Cortie MB, 'Mapping surface plasmons at the nanometre scale with an electron beam', Nanotechnology, 18 (2007) [C1]
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2007 |
Keast VJ, Bosman M, 'New developments in electron energy loss spectroscopy', Microscopy Research and Technique, 70 211-219 (2007) [C1]
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2007 |
Keast VJ, La Fontaine A, Du Plessis J, 'Variability in the segregation of bismuth between grain boundaries in copper', Acta Materialia, 55 5149-5155 (2007) [C1]
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2007 |
Petersen TC, Keast VJ, Johnson K, Duvall S, 'TEM-based phase retrieval of p-n junction wafers using the transport of intensity equation', Philosophical Magazine, 87 3565-3578 (2007) [C1]
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2007 |
Bosman M, Keast VJ, Garcia-Munoz JL, D'Alfonso AJ, Findlay SD, Allen LJ, 'Two-dimensional mapping of chemical information at atomic resolution', Physical Review Letters, 99 (2007) [C1]
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Nova |
2007 |
Anders A, Pasaja N, Lim SHN, Petersen TC, Keast VJ, 'Plasma biasing to control the growth conditions of diamond-like carbon', SURFACE & COATINGS TECHNOLOGY, 201 4628-4632 (2007) [C1]
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2007 |
Anders A, Pasaja N, Lim SHN, Petersen TC, Keast VJ, 'Plasma biasing to control the growth conditions of diamond-like carbon (vol 201, pg 4628, 2007)', SURFACE & COATINGS TECHNOLOGY, 202 414-415 (2007)
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2006 |
Bosman M, Watanabe M, Alexander DTL, Keast VJ, 'Mapping chemical and bonding information using multivariate analysis of electron energy-loss spectrum images', ULTRAMICROSCOPY, 106 1024-1032 (2006) [C1]
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2006 |
Ma WJ, Ruys AJ, Zreiqat H, Mason R, Ringer SP, Liu ZW, et al., 'The biocompatibility of diamond-like carbon nano films', Proceedings of the 2006 International Conference on Nanoscience and Nanotechnology, ICONN, 274-277 (2006)
the sp3 (diamond like bonding) fraction and surface properties are the important determining factors among all structural and compositional characteristics which control the bioco... [more]
the sp3 (diamond like bonding) fraction and surface properties are the important determining factors among all structural and compositional characteristics which control the biocompatibility of diamond-like carbon (DLC) coating. Previous reports in this area have not adequately correlated these factors with coating optimization for specific biomedical applications. The present work is aimed at studying the effect of the structural and compositional properties on the biocompatibity of both hydrogenated and unhydrogenated tetrahedral DLC films produced by commercial deposition methods. Electron energy loss spectroscopy (EELS) and X-Ray photoelectron spectroscopy (XPS) were used for structural and compositional characterization. The human bone derived cells (HBDC) 3 day cell-culture showed good attachment to the DLC surfaces but no significant difference in morphology on different types of DLC. Blood protein adsorption study showed an increased albumin to fibrinogen ratio as the sp 3 fraction increases. © 2006 IEEE.
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2006 |
La Fontaine A, Keast VJ, 'Compositional distributions in classical and lead-free brasses', MATERIALS CHARACTERIZATION, 57 424-429 (2006) [C1]
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2005 |
Keast VJ, 'Ab initio calculations of plasmons and interband transitions in the low-loss electron energy-loss spectrum', JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 143 97-104 (2005)
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2004 |
Stevens KJ, Levi T, Minchington I, Briggs N, Keast V, Bulcock S, 'Transmission electron microscopy of high pressure metal dusted 316 stainless steel', Materials Science and Engineering: A, 385 292-299 (2004)
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2004 |
Bosman M, Sitarz M, Sikorski AZ, Keast VJ, 'Measurements of composition and electronic structure in an operating light-emitting diode using analytical electron microscopy', APPLIED PHYSICS LETTERS, 84 1371-1373 (2004) [C1]
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2004 |
Stevens KJ, Levi T, Minchington I, Briggs N, Keast V, Bulcock S, 'Transmission electron microscopy of high pressure metal dusted 316 stainless steel', MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 385 292-299 (2004) [C1]
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2004 |
Yeoh WK, Horvat J, Dou SX, Keast V, 'Strong pinning and high critical current density in carbon nanotube doped MgB2', SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 17 S572-S577 (2004) [C1]
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2004 |
Keast VJ, 'Bandstructure calculations for the simulation of low-loss EELS and plasmon energies', Microscopy and Microanalysis, 10 854-855 (2004)
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2003 |
Keast VJ, Kappers MJ, Humphreys CJ, 'Electron energy-loss near edge structure (ELNES) of InGaN quantum wells', JOURNAL OF MICROSCOPY, 210 89-93 (2003) [C1]
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2002 |
Keast VJ, Scott AJ, Kappers MJ, Foxon CT, Humphreys CJ, 'Electronic structure of GaN and InxGa1-xN measured with electron energy-loss spectroscopy', PHYSICAL REVIEW B, 66 (2002) [C1]
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2001 |
Keast VJ, 'Experimental verification of the electronic structure of MgB2 using electron energy-loss spectroscopy', APPLIED PHYSICS LETTERS, 79 3491-3493 (2001)
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2001 |
Keast VJ, Scott AJ, Brydson R, Williams DB, Bruley J, 'Electron energy-loss near-edge structure - a tool for the investigation of electronic structure on the nanometre scale', JOURNAL OF MICROSCOPY, 203 135-175 (2001) [C1]
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2001 |
Keast VJ, Misra A, Kung H, Mitchell TE, 'Compositional distributions in nanoscale metallic multilayers studied using x-ray mapping', JOURNAL OF MATERIALS RESEARCH, 16 2032-2038 (2001) [C1]
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2001 |
Keast V, 'Electronic Structure of MgB2 measured using electron energy-loss spectroscopy', Applied Physics Letters, 79 3491-3493 (2001) [C1] |
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2001 |
Keast VJ, Williams DB, 'Grain boundary chemistry', CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE, 5 23-30 (2001)
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2001 |
Keast V, Williams DB, 'Grain Boundary Segregation', Current Opinion in Solid State and Materials Science, 5 23-30 (2001) [C1] |
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2000 |
Keast VJ, Williams DB, 'Quantification of boundary segregation in the analytical electron microscope', JOURNAL OF MICROSCOPY, 199 45-55 (2000) [C1]
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1999 |
Williams DB, Carpenter DT, Keast V, 'Can analytical electron microscopy tell us why materials break?', Microscopy and Analysis, 73 17-19 (1999) [C1] |
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1999 |
Ozkaya D, Zhou WZ, Thomas JM, Midgley P, Keast VJ, Hermans S, 'High-resolution imaging of nanoparticle bimetallic catalysts supported on mesoporous silica', CATALYSIS LETTERS, 60 113-120 (1999) [C1]
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1999 |
Keast VJ, Williams DB, 'Quantitative compositional mapping of Bi segregation to grain boundaries in Cu', ACTA MATERIALIA, 47 3999-4008 (1999) [C1]
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1999 |
Bruley J, Keast VJ, Williams DB, 'An EELS study of segregation-induced grain-boundary embrittlement of copper', ACTA MATERIALIA, 47 4009-4017 (1999) [C1]
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1998 |
Keast VJ, Bruley J, Rez P, Maclaren JM, Williams DB, 'Chemistry and bonding changes associated with the segregation of Bi to grain boundaries in Cu', ACTA MATERIALIA, 46 481-490 (1998) [C1]
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1996 |
Bruley J, Keast V, Williams DB, 'Measurement of the localised electronic structure associated with bismuth segregation to copper grain boundaries', Journal of Physics D: Applied Physics, 29 1730-1739 (1996) [C1]
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1994 |
Davis CA, Yin Y, McKenzie DR, Hall LE, Kravtchinshaia E, Keast V, et al., 'The structure of Boron-,Phosphorus- and Nitrogen-doped tetrahedral amorphous carbon deposited by cathodic arc', Journal of Non-Crystalline Solids, 170 46-50 (1994) [C1]
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