Now showing items 303-322 of 1147

  • Electromagnetic energy-momentum in dispersive media 

    Philbin, Thomas G. (American Physical Society, 2011)
    The standard derivations of electromagnetic energy and momentum in media take Maxwell’s equations as the starting point. It is well known that for dispersive media this approach does not directly yield exact expressions ...
  • Electromagnetic resonances of a multilayer metal-dielectric stack 

    Gadsdon, Martyn Richard; Parsons, J.; Sambles, J. Roy (Optical Society of America, 2009)
    The electromagnetic resonances of multilayer metal–dielectric stacks are investigated. These structures support periodic bandpass regions, whose band edges may be predicted by considering the character of the fields inside ...
  • Electromagnetic response of closely spaced metal meshes 

    Taylor, Melita C.; Hibbins, Alastair P.; Sambles, J. Roy (American Physical Society, 2012)
    The electromagnetic transmittance of a double layer of identical square arrays of square holes (mesh) in a perfectly conducting sheet is analytically modeled using a modal matching technique. The structure supports families ...
  • Electron transport in TiO2 probed by THz time-domain spectroscopy 

    Hendry, Euan; Wang, F.; Shan, Jie; Heinz, Tony F.; Bonn, Mischa (American Physical Society, 2004)
    Electron transport in crystalline TiO2 (rutile phase) is investigated by frequency-dependent conductivity measurements using THz time-domain spectroscopy. Transport is limited by electron-phonon coupling, resulting in a ...
  • Electron transport of WS2 transistors in a hexagonal boron nitride dielectric environment. 

    Withers, Freddie; Bointon, Thomas H.; Hudson, David; Russo, Saverio; Craciun, Monica F. (Nature Publishing Group, 2014)
    We present the first study of the intrinsic electrical properties of WS2 transistors fabricated with two different dielectric environments WS2 on SiO2 and WS2 on h-BN/SiO2, respectively. A comparative analysis of the ...
  • Electron-phonon scattering at the intersection of two Landau levels 

    Golovach, V.N.; Portnoi, M.E. (American Physical Society, 2006)
    We predict a double-resonant feature in the magnetic field dependence of the phonon-mediated longitudinal conductivity σxx of a two-subband quasi-two-dimensional electron system in a quantizing magnetic field. The two sharp ...
  • Electron-vibron coupling in suspended carbon nanotube quantum dots 

    Mariani, Eros; von Oppen, Felix (American Physical Society, 2009)
    Motivated by recent experiments, we investigate the electron-vibron coupling in suspended carbon nanotube quantum dots, starting with the electron-phonon coupling of the underlying graphene layer. We show that the coupling ...
  • An Elementary Proof of the Simplicity of the Mathieu Groups M11 and M23 

    Chapman, Robin (Mathematical Association of America (MAA), 1995)
  • Elliptic behaviour in the sawtooth standard map 

    Ashwin, Peter (Elsevier, 1997)
    This paper examines the standard map with sawtooth nonlinearity when the eigenvalues of the Jacobian lie on the unit circle. This is an area-preserving map of the torus to itself that is linear except on a line on which ...
  • Emergence and maintenance of functional modules in signaling pathways 

    Soyer, Orkun S. (BioMed Central, 2007)
    Background: While detection and analysis of functional modules in biological systems have received great attention in recent years, we still lack a complete understanding of how such modules emerge. One theory is that ...
  • Emission of light through thin silver films via near-field coupling to surface plasmon polaritons 

    Winter, G.; Barnes, William L. (American Institute of Physics, 2006)
    We show that the emission of light from a dye layer through an adjacent thin silver film is maximal for a silver thickness of approximately 50 nm. This effect is explained as the result of competition between enhancement ...
  • Emplacement styles within the Land's End Granite, West Cornwall 

    Powell, T.; Salmon, S.; Clark, A.H.; Shail, R.K. (The Ussher Society, 1999)
    The Land's End Granite is the youngest of the major plutons of the Cornubian batholith and comprises a number of discrete bodies of both coarse-grained granite (CGG) and fine-grained granite (FGG). Detailed re-mapping of ...
  • Encoding via conjugate symmetries of slow oscillations for globally coupled oscillators 

    Ashwin, Peter; Borresen, Jon (American Physical Society, 2004)
    We study properties of the dynamics underlying slow cluster oscillations in two systems of five globally coupled oscillators. These slow oscillations are due to the appearance of structurally stable heteroclinic connections ...
  • The end of star formation in Chamaeleon I?: A LABOCA census of starless and protostellar cores 

    Belloche, A.; Schuller, F.; Parise, B.; André, P.; Hatchell, Jennifer; Jørgensen, J.K.; Bontemps, S.; Weiss, A.; Menten, K.M.; Muders, D. (EDP Sciences, 2011)
    Context. Chamaeleon I is the most active region in terms of star formation in the Chamaeleon molecular cloud complex. Although it is one of the nearest low-mass star forming regions, its population of prestellar and ...
  • Energy-crossing number relations for braided magnetic fields 

    Berger, M.A. (American Physical Society, 1993)
    This Letter derives lower bounds on the energy of braided magnetic fields, based on crossing number techniques pioneered by Freedman and He. Mean crossing numbers are defined for magnetic fields inside a cylinder; for ...
  • Engineers and planners: Sustainable water management alliances 

    Potter, Karen; Ward, Sarah; Shaw, Davis; Macdonald, Neil; White, Iain; Fischer, Thomas; Butler, David; Kellagher, Richard (ICE Publishing, 2011)
    In the future, increasing pressure will inevitably be placed on the spatial planning system to improve its consideration of water management issues. Emerging challenges include designing for climatic extremes, reducing ...
  • Enhanced microwave transmission through a patterned metal film 

    Kelly, Robert J.; Lockyear, Matthew J.; Suckling, James R.; Sambles, J. Roy; Lawrence, Christopher R. (American Institute of Physics, 2007)
    Selective transmission of radiation through a two-dimensional array of subwavelength slits in an otherwise opaque thin metal film is presented at microwave frequencies. Individual slits are modified with the addition of ...
  • Envelope quasisolitons in dissipative systems with cross-diffusion 

    Biktashev, V. N.; Tsyganov, M. A. (American Physical Society, 2011)
    We consider two-component nonlinear dissipative spatially extended systems of reaction-cross-diffusion type. Previously, such systems were shown to support "quasisoliton" pulses, which have a fixed stable structure but can ...
  • Episodic accretion at early stages of evolution of low-mass stars and brown dwarfs: a solution for the observed luminosity spread in H-R diagrams? 

    Baraffe, I.; Chabrier, G.; Gallardo, J. (American Astronomical Society / IOP Publishing, 2009)
  • Equitability revisited: why the 'equitable threat score' is not equitable 

    Hogan, Robin J.; Ferro, Christopher A.T.; Jolliffe, Ian T.; Stephenson, David B. (American Meteorological Society, 2010)
    In the forecasting of binary events, verification measures that are “equitable” were defined by Gandin and Murphy to satisfy two requirements: 1) they award all random forecasting systems, including those that always issue ...