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Browsing 02 Physical Sciences by Title

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  • Nanoporous plasmonic coatings 
    Maaroof Abbas; Gentle Angus; Cortie Michael; Smith Geoffrey (The International Society for Optical Engineering, 2007)
    The electrical and optical properties of mesoporous gold are compared to those of thin porous gold films and a simulated thin film made by randomly distributing voids in gold, until the voids fill 76% of film volume. All ...
  • Nanoscale coatings of AuAlx and PtAlx and their mesoporous elemental derivatives 
    Maaroof Abbas; Smith Geoffrey; Cortie Michael; Ngoepe P (Elsevier Science, 2006)
    A method to produce nanoscale films of AuAlx and PtAlx, and their mesoporous elemental derivatives is described, and the morphology and optical properties of these coatings explored. The color of the AuAlx film is bright ...
  • Near-field and far-field analysis of an azimuthally polarized slow Bloch mode microlaser 
    Vo Thanh-Phong; Rahmani Adel; Belarouci Ali; Seassal Christian; Nedeljkovic Dusan; Callard Segolene (Optical Society of America, 2010)
    We report on the near- and far-field investigation of the slow Bloch modes associated with the G point of the Brillouin zone, for a honeycomb lattice photonic crystal, using near-field scanning optical microscopy (NSOM) ...
  • Nearfield observation of subwavelength confinement of photoluminescence by a photonic crystal microcavity 
    Louvion Nicolas; Rahmani Adel; Seassal Christian; Callard Segolene; Gerard Davy; De Fornel Frederique (Optical Society of America, 2006)
    We present a direct, room-temperature near-field optical study of light confinement by a subwavelength defect microcavity in a photonic crystal slab containing quantum-well sources. The observations are compared with ...
  • Near-field photonic forces 
    Nieto-Vesperinas Manuel; Chaumet Patrick; Rahmani Adel (Royal Society, 2004)
    A review of recent advancements in photonic forces is presented. We discuss in detail the interaction of light and sub-wavelength particles on a substrate illuminated by total internal reflection, and we study the opticalforces ...
  • Near Infra-Red Radiation Squeezing Through 20nm Voids in Obliquely Deposited Metal Films 
    Smith Geoffrey; Hossain A; Gentle Angus (American Institute of Physics, 2001)
    Obliquely deposited metal films which are nearly continuous, displaying several unexpected solar optical properties. Transmittance intensity, spectral character, preferred direction of incidence, and polarization ...
  • Networking in Rural Environments: Benefits, Feasibilities and Requirements 
    Li Yang; Chan H.; Agbinya Johnson (UTSePress, 2006)
    Building networks in rural areas is difficult because of the tough rural environments and low return to the service operators on investment Rural networking and their applications in education, health, community ...
  • Neurotoxicity of low-dose repeatedly intranasal instillation of nano- and submicron-sized ferric oxide particles in mice 
    Wang Bing; Feng Weiyue; Zhu Motao; Wang Yun; Wang Meng; Gu Yiqun; Ouyang Hong; Wang Huajian; Li Ming; Zhao Yuliang; Chai Zhifang; Wang Haifang (Springer, 2009)
    Olfactory tract has been demonstrated to be an important portal for inhaled solid nanoparticle transportation into the central nervous system (CNS). We have previously demonstrated that intranasally instilled Fe2O3 ...
  • NFC Applications 
    Movassaghi Samaneh; Agbinya Johnson (River, 2011)
    In the latter sections of this chaper, Near Field Communication applications are described. These applications are categorized into a few different groups which are as follows: Biomedical Monitoring, Mobile Phones, ...
  • NFC Applications (Part Two) 
    Movassaghi Samaneh; Agbinya Johnson (River, 2011)
    This chapter looks into a detailed description of a few NFC application consisting of related formulas, block diagrams and circuit design. A general description in regard of these applications had been provided in Chapter ...
  • Noise characteristics of the gas ionization cascade used in low vacuum scanning electron microscopy 
    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 ...
  • Noise performance of HTS solid and meshed dc SQUID magnetometers in external magnetic fields 
    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 ...
  • Noncommuting limits and effective properties for oblique propagation of electromagnetic waves through an array of aligned fibres 
    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 infinity. ...
  • Non-equilibrium molecular orbital calculations of Si/SiO2 Interfaces 
    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 ...
  • Nonfragile Hinfinity Vibration Control for Uncertain Structural Systems 
    Du Haiping; Lam James; Sze Kam (Academic Press, 2004)
    The paper deals with the robust non-fragile Hinfinity control problem for uncertain structural systems with additive controller gain variations. The parameter uncertainties for the mass, damping and stiffness of the structural ...
  • Nonlinear FDTD analysis and experimental verification in InGaAsPInP racetrack microresonators 
    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 ...
  • Nonlinear field effects in quadrupole mass filters 
    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 ...
  • Nonlinear Magnetic Model of Surface Mounted PM Machines Incorporating Saturation Saliency 
    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 ...
  • Nonlinear Optical Properties Of Semiconducting Nanocrystals In Fused Silica 
    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 ...
  • Nonlinear Optical Response Of Ge Nanocrystals In A Silica Matrix 
    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 ...