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Browsing 02 Physical Sciences by Title

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  • Tileli, V; Knowles, William; Toth, Milos; Thiel, Bradley (Amer Inst Physics, 2009)
    The noise characteristics of gas cascade amplified electron signals in low vacuum scanning electron microscopy (LVSEM) are described and analyzed. We derive expressions for each component contributing to the total noise ...
  • Du, J.; Tilbrook, D. L.; Macfarlane, J. C.; Leslie, K. E.; Ore, D. S. (Elsevier Science, 2004)
    The noise performance of thin film YBa2Cu3O7 x (YBCO) directly coupled superconducting quantum interference device (SQUID) magnetometers fabricated on MgO substrates with step-edge junctions was investigated at 77 K ...
  • Poulton, Christopher; Guenneau, Sebastien; Movchan, Alexander (American Physical Society, 2004)
    We consider formulations for the Helmholtz operator for conically propagating modes on an array of high contrast ferromagnetic cylindrical inclusions in the limit when their wavelength outside the inclusions tends to ...
  • Schulte, Jurgen; Ushio, J; Maruizumi, Takuya (Elsevier Inc, 2000)
    A non-equilibrium statistical molecular orbital approach has been developed to analyze non-equilibrium configurations in Si/SiO2 heterostructures, improvement of which is essential for realization of superior semiconductor ...
  • Du, Haiping; Lam, James; Sze, Kam (Academic Press, 2004)
    The paper deals with the robust non-fragile H-Infinity control problem for uncertain structural systems with additive controller gain variations. The parameter uncertainties for the mass, damping and stiffness of the ...
  • Fujii, Masafumi; Koos, Christian; Poulton, Christopher; Leuthold, Juerg; Freude, Wolfgang (IEEE Publications, 2006)
    We demonstrate for the first time a nonlinear finite-difference time-domain (FDTD) analysis of optical parametric four-wave mixing (FWM) in an actual InGaAsP-InP-based racetrack microresonator, and the results are compared ...
  • Schulte, Jurgen; Schevschenko, P; Radchik, Alex (The American Institute of Physics, 1999)
    The performance of a quadrupole mass filter (QMF) generally degrades when using electrodes of circular cross section in place of mathematical ideal hyperbolic electrodes. The circular cross section of electrodes produces ...
  • Wang, Yi; Zhu, Jianguo; Wang, Shuhong; Guo, Youguang; Xu, Wei (IEEE, 2009)
    In this paper a comprehensive nonlinear model of surface mounted permanent magnet synchronous machine (SPMSM) is proposed considering both the structural and the saturation saliencies to enable the numerical simulation of ...
  • Dowd, Annette; Samoc, Marek; Luther-Davies, Barry; Elliman, Robert (Elsevier Science Bv, 1999)
    Degenerate four-wave mixing (DFWM) is used to examine the nonlinear optical response of Ge nanocrystals in a silica matrix. The nanocrystals are formed by implanting 1.0 MeV Ge ions into silica to a dose of 3.0x10(17) Ge ...
  • Dowd, Annette; Elliman, Robert; Samoc, Marek; Luther-Davies, Barry (Amer Inst Physics, 1999)
    Time-resolved degenerate-four-wave-mixing measurements were used to study the nonlinear optical response (intensity-dependent refractive index! of Ge nanocrystallites embedded in a silica matrix. Nanocrystals were fabricated ...
  • Grillet, Christian; Smith, Cameron; Lee, Michael; Magi, Eric; Moss, D; Eggleton, Benjamin; Freeman, Darren; Madden, Steve; Luther-Davies, Barry; Byrne, Michael; Asatryan, Ara; Botten, Lindsay (IEEE, 2006)
  • Zhang, Nong; Ji, Jc (Pergamon-Elsevier Science Ltd, 2009)
    Non-resonant bifurcations of codimension two may appear in the controlled van der Pol-Duffing oscillator when two critical time delays corresponding to a double Hopf bifurcation have the same value. With the aid of centre ...
  • Koos, Christian; Jacome, L; Poulton, Christopher; Leuthold, Juerg; Freude, Wolfgang (Optical Society of America, 2007)
    Values up to gamma = 7?106/(Wkm) for the nonlinear parameter are feasible if silicon-on-insulator based strip and slot waveguides are properly designed. This is more than three orders of magnitude larger than for ...
  • Fujii, Masafumi; Takashima, Tetsuya; Maitra, Ayan; Leuthold, Juerg; Freude, Wolfgang; Poulton, Christopher (Optical Society of America, 2007)
    Nonreciprocal optical bistability is numerically investigated in InGaAsP/InP nonlinear waveguide Bragg gratings having a strong and asymmetric sidewall modulation. Minimum switching power as low as 77 mW is predicted by ...
  • Fujii, Masafumi; Maitra, Ayan; Poulton, Christopher; Leuthold, Juerg; Freude, Wolfgang (Optical Society of America, 2006)
    We investigate numerically a non-reciprocal switching behavior in strongly modulated waveguide Bragg gratings (WBGs) having a longitudinally asymmetric stopband configuration. The minimum power predicted for a stable ...
  • Lau, Yiu; Braun, Michael; Hutton, Brian (Institute of Physics, 2001)
    Conventional approaches to image registration are generally limited to image-wide rigid transformations. However, the body and its internal organs are non-rigid structures that change shape due to changes in the body's ...
  • Marquarding, M.; Kilborn, V. A.; Mader, S.; O'Brien, J.; Doyle, M. T.; Ryder, S. D.; Minchin, R. F.; Garcia-Appadoo, D.; Drinkwater, M. J.; Ekers, R. D.; Gibson, B. K.; Freeman, K. C.; Jerjen, H.; Zwaan, M. A.; Stootman, F.; Sadler, E. M.; Ryan-Weber, E.; Stevens, J.; Meyer, M. J.; Gurovich, S.; Staveley-Smith, L.; Webster, R. L.; Putman, M. E.; Knezek, P. M.; Koribalski, B. S.; Barnes, D. G.; Disney, M. J.; de Blok, W. J.; Kesteven, M. J.; Bhathal, R.; Stewart, I. M.; Wong, O.; Harnett, J. I.; Henning, P. A.; Waugh, M. (Blackwell Publishing, 2006)
    The Northern HIPASScatalogue (NHICAT) is the northern extension of the HIPASS catalogue, HICAT. This extension adds the sky area between the declination (Dec.) range of +20 < 8 < +25"30' to HICAT's Dec. range of -900 < ...
  • Wong, Oiwei; Ryan-Weber, Emma; Garcia-Appadoo, Diego; Webster, Rachel; Staveley-Smith, Lister; Zwaan, Martin; Meyer, M; Barnes, D; Kilborn, Virginia; Bhathal, Ragbir; De Blok, W; Disney, Mike; Doyle, Marianne; Drinkwater, Michael; Ekers, Ron; Freeman, Ken; Gibson, Brad; Gurovich, Sebastian; Harnett, Julienne; Henning, Trish; Jerjen, Helmut; Kesteven, Michael; Knezek, Patricia; Koribalski, Barbel; Mader, Stacy; Marquarding, Malte; Minchin, Robert; O'Brien, Jess; Putman, Mary; Ryder, Stuart; Sadler, Elaine; Stevens, J; Stewart, Ian; Stootman, Frank; Waugh, Meryl (Blackwell Publishing, 2006)
    The Northern HIPASS catalogue (NHICAT) is the northern extension of the HIPASS catalogue, HICAT. This extension adds the sky area between the declination (Dec.) range of +2 degrees < delta < +25 degrees 30' to HICAT's Dec. ...
  • Earp, Alan; Smith, Geoff; Franklin, Jim; Mccredie, Geoff (SPIE, 2001)
    Simple quantitative performance criteria are developed for translucent materials in terms of hemispherical visible transmittance, and angular spread of transmitted luminance using a half angle. Criteria are linked to ...
  • Orlic, I.; Siegele, R.; Hammerton, K.; Jeffree, Ross; Cohen, D. (Elsevier Inc, 2003)
    Elevated concentrations of lead were found in Australian free ranging saltwater crocodile (Crocodylus porosus) bone and flesh. Lead shots were found as potential source of lead in these animals. ANSTO s heavy ion nuclear ...