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Browsing 02 Physical Sciences by Title

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  • Gas Cascade Amplification in Ultra-High-Resolution Environmental Scanning Electron Microcopy 
    Toth Milos; Thiel Bradley; Knowles William (Cambridge Univ Press, 2010)
    We describe a feedback mechanism in the gas cascade amplification process used in magnetic immersion lens environmental scanning electron microcopy (ESEM). Feedback dominates gas gain under the conditions typically used ...
  • Gaseous scintillation detection and amplification in variable pressure scanning electron microscopy 
    Morgan Scott; Phillips Matthew (American Institute of Physics, 2006)
    This work investigates the generation and detection of gaseous scintillation signals produced in variable pressure scanning electron microscopy through electron-gas molecule excitation reactions. Here a gaseous scintillation ...
  • Gene expression profiling of HUH7-ins Lack of a granulogenic function for Chromogranin A 
    Lutherborrow Mark; Appavoo Mathiyalagan; Simpson Ann; Tuch Bernard (Landes Bioscience, 2009)
    Previously, the insulin producing liver cell line HUH7-ins has been shown to synthesize, store and secrete insulin in response to glucose via secretory granules. The current study characterized the gene expression profile ...
  • General Characteristics of Localisation in Stratified Media with Randon Loss and Gain 
    Botten Lindsay; De Sterke C; Mcphedran Ross; Nicorovici Nicolae; Asatryan Ara; Robinson Peter (Kluwer Academic Publishers, 2001)
    Localization in multi-layer stratified media with gain and loss is considered. The localization length is studied as a function of wavelength over a wide spectral range, and it is demonstrated that, in many cases, the ...
  • Generalisation of the transfer matrix formulation of the theory of electron and photon conductance 
    Botten Lindsay; Asatryan Ara; Nicorovici Nicolae; Mcphedran Ross; De Sterke C (Elsevier Science Bv, 2007)
  • Generalization of the coupled dipole method to periodic structures 
    Chaumet Patrick; Rahmani Adel; Bryant Garnett (American Physical Society, 2003)
    We present a generalization of the coupled dipole method to the scattering of light by arbitrary periodic structures. This formulation of the coupled dipole method relies on the same direct-space discretization scheme that ...
  • General theory of three-dimensional radiance measurements with optical microprobes 
    Fukshansky-Kazarinova N.; Fukshansky L.; Kuhl Michael; Jã¸Rgensen B. (Optical Society of America, 1997)
    Measurements of the radiance distribution and ?uence rate within turbid samples with ?ber-optic radiance microprobes contain a large variable instrumental error caused by the nonuniform directional sensitivity of the ...
  • Generation of highpower terahertz pulses in a prism 
    Johnston Michael; Whittaker David; Dowd Annette; Davies A.; Linfield Edmund; Li X; Ritchie D (Optical Society of America, 2002)
    A compact, high-power emitter of half-cycle terahertz (THz) radiation is demonstrated. The device consists of an epitaxial InAs emitter upon a GaAs prism and produces THz pulses that are 20 times more powerful than those ...
  • Glycothermal synthesis of assembled vanadium oxide 
    Fu Haitao; Jiang Xuchuan; Yang Xiaohong; Yu Aibing; Su Dawei; Wang Guoxiu (Springer, 2012)
    This study demonstrates a facile but effective glycothermal method to synthesize vanadium oxide nanostructures for gas sensing detection. In this method, sodium orthovanadate was first dispersed and heated in ethylene ...
  • Graphene-supported SnO2 nanoparticles prepared by a solvothermal approach 
    Wang Bei; Su Dawei; Park Jinsoo; Ahn Hyojun; Wang Guoxiu (Springer New York LLC, 2012)
    SnO2 nanoparticles were dispersed on graphene nanosheets through a solvothermal approach using ethylene glycol as the solvent. The uniform distribution of SnO2 nanoparticles on graphene nanosheets has been confirmed by ...
  • Green's functions and relative local density of states in two-dimensional lossy structured systems 
    Nicorovici Nicolae; Mcphedran Ross; Botten Lindsay; Poulton Christopher; Asatryan Ara (Taylor and Francis, 2010)
    The local density of states (LDOS) is a function of spatial position and frequency which governs the radiation properties of sources placed within structured optical systems. We show how the enhancement or suppression of ...
  • Group velocity in lossy periodic structured media 
    Chen Parry; Mcphedran Ross; De Sterke C; Poulton Christopher; Asatryan Ara; Botten Lindsay; Steel Michael (American Physical Society, 2010)
    In lossless periodic media, the concept of group velocity is fundamental to the study of propagation dynamics. When spatially averaged, the group velocity is numerically equivalent to energy velocity, defined as the ratio ...
  • Growth and Characterization of ZnO Nanoparticles 
    Tomaszewska-Grzeda A; Lojkowski W; Godlewski Marek; Yatsunenko S; Drozdowicz-Tomsia Krystyna; Goldys Ewa; Phillips Matthew (Polish Academy of Sciences, 2005)
    In this work we evaluate structural and optical properties of ZnO nanoparticles grown by wet chemistry method. Light emission properties of these nanoparticles are studied with cathodoluminescence and micro- photoluminescence. ...
  • Growth-temperature-dependent cathodoluminescence properties of GaSb/GaAs quantum-dot multilayer structures 
    Drozdowicz-Tomsia Krystyna; Goldys Ewa; Motlan Motlan; Zareie Hadi; Phillips Matthew (American Institute of Physics, 2005)
    Multilayer GaSb/GaAs quantum-dot sQDd structures grown by atmospheric-pressure metalorganic chemical vapor deposition on semi-insulating GaAs s100d substrates with varying growth temperature of the confinement layers are ...
  • Guided Modes in arrays of metallic nanowires 
    Poulton Christopher; Schmidt Markus; Pearce G; Kakarantzas Georgios; Russell P (Optical Society of America, 2007)
  • Heat Loss and Evaporation Rate from an Agitated Water Tank 
    Alonso Martin Hector; Revel Alex; Huynh Ba (AGH University of Science and Technology Press, 2009)
    ABSTRACT. Experiments have been performed to investigate the heat loss and evaporation rate from an open-top tank of heated water that is also agitated vigorously by air bubbling through it. High consumption of electrical ...
  • Heat transfer measurement of turbulent spots in a hypersonic blunt-body boundary layer 
    Fiala, A.; Hillier, R.; Mallinson, S.; Wijesinghe, H. S. (Cambridge University Press, 2006)
    This paper presents data on turbulent-spot propagation in the hypersonic boundary-layer flow over a blunted cylindrical body. Data are based on the measurement of time-dependent surface heat transfer rates using gauges ...
  • Heavy metal pathways and archives in biological tissue 
    Orlic I.; Siegele R.; Menon D.; Markich S.; Cohen D.; Jeffree Ross; Mcphail D.; Sarbutt A.; Stelcer E. (Elsevier B.V., 2002)
    Nuclear milli and microprobes at the Australian Nuclear Science and Technology Organisation (ANSTO) were used to determine lead accumulation in native Australian plants and animals. Three species of eucalypt plants (Eucalyptus ...
  • High bandwidth secondary electron detection in variable pressure scanning electron microscopy using a Frisch grid 
    Morgan Scott; Phillips Matthew (IOP Publishing Ltd, 2008)
    The bandwidth and contrast of secondary electron ( SE) images obtained using variable pressure scanning electron microscopy are enhanced when a grounded Frisch grid is placed between the SE detecting anode and the negatively ...
  • Highly accurate modelling of generalised defect modes in photonic crystals using the fictitious source superposition method 
    Dossou Kokou; Botten Lindsay; Wilcox Stuart; Mcphedran Ross; De Sterke C; Nicorovici Nicolae; Asatryan Ara (International Journal of microwave and optical Technology, 2006)
    We present an exact theory for modelling the modes of two-dimensional photonic crystals with a truly infinite cladding. It builds on our previous implementation of the fictitious source superposition method for simple ...