Now showing items 144-163 of 1101

  • Composite Fermions with Spin at $ν=1/2$ 

    Kramer, B; Magnoli, N; Mariani, E; Merlo, M; Napoli, F; Sassetti, M (IOS Press, 2003)
    The model of Composite Fermions for describing interacting electrons in two dimensions in the presence of a magnetic field is described. In this model, charged Fermions are combined with an even number of magnetic flux ...
  • Compressed sensing with near-field THz radiation 

    Stantchev, RI; Phillips, DB; Hobson, P; Hornett, SM; Padgett, MJ; Hendry, E (Optical Society of America, 2017-08-17)
    We demonstrate a form of near-field terahertz (THz) imaging that is compatible with compressed sensing algorithms. By spatially photomodulating THz pulses using a set of shaped binary optical patterns and employing a ...
  • Compression or tension? The stress distribution in the proximal femur 

    Rudman, KE; Aspden, RM; Meakin, JR (BioMed Central, 2006-02-20)
    BACKGROUND: Questions regarding the distribution of stress in the proximal human femur have never been adequately resolved. Traditionally, by considering the femur in isolation, it has been believed that the effect of body ...
  • Computationally efficient analysis of extraordinary optical transmission through infinite and truncated subwavelength hole arrays 

    Camacho, M; Boix, RR; Medina, F (American Physical Society, 2016-06-22)
    The authors present a computationally efficient technique for the analysis of extraordinary transmission through both infinite and truncated periodic arrays of slots in perfect conductor screens of negligible thickness. ...
  • Confronting standard models of proto-planetary disks with new mid-infrared sizes from the Keck Interferometer 

    Millan-Gabet, Rafael; Che, Xiao; Monnier, John D.; Sitko, Michael l.; Russell, Ray W.; Grady, Carol A.; Day, Amanda N.; Perry R.B.; Harries, Tim J.; Aarnio, Alicia N.; Colavita, Mark M.; Wizinowich, Peter L.; Ragland, Sam; Woillez, Julien (American Astronomical Society, 2016-07-26)
    We present near and mid–infrared interferometric observations made with the Keck Interferometer Nuller and near–contemporaneous spectro–photometry from the IRTF of 11 well known young stellar objects, several observed for ...
  • Conoscopic observation of director reorientation during Poiseuille flow of a nematic liquid crystal 

    Holmes, Christopher J.; Cornford, Stephen Leslie; Sambles, J. Roy (American Institute of Physics, 2009)
    Director reorientation under pressure driven (Poiseuille) flow is observed conoscopically for the liquid crystal 5CB aligned at an azimuthal angle of 45° to the direction of flow. A polyimide surface treatment (AL 1254) ...
  • Consistency of certain constitutive relations with quantum electromagnetism 

    Horsley, S.A.R. (American Physical Society, 2011)
    Recent work by Philbin [ New J. Phys. 12 123008 (2010)] has provided a Lagrangian theory that establishes a general method for the canonical quantization of the electromagnetic field in any dispersive, lossy, linear ...
  • A consistent retrieval analysis of 10 hot Jupiters observed in transmission 

    Barstow, JK; Aigrain, S; Irwin, PGJ; Sing, DK (American Astronomical Society / IOP Publishing, 2017-01-01)
    We present a consistent optimal estimation retrieval analysis of 10 hot Jupiter exoplanets, each with transmission spectral data spanning the visible to near-infrared wavelength range. Using the NEMESIS radiative transfer ...
  • Constrained hyperbolic divergence cleaning in smoothed particle magnetohydrodynamics with variable cleaning speeds 

    Tricco, TS; Price, DJ; Bate, Matthew R. (Elsevier, 2016-10-01)
    We present an updated constrained hyperbolic/parabolic divergence cleaning algorithm for smoothed particle magnetohydrodynamics (SPMHD) that remains conservative with wave cleaning speeds which vary in space and time. This ...
  • Continuous evolution of the in-plane magnetic anisotropies with thickness in epitaxial Fe films 

    Gester, M.; Daboo, C.; Hicken, R.J.; Gray, S.J.; Ercole, A.; Bland, J.A.C. (American Institute of Physics, 1996)
    We have studied the evolution of the magnetic in‐plane anisotropy in epitaxial Fe/GaAs films of both (001) and (110) orientation as a function of the Fe layer thickness using the longitudinal magneto‐optic Kerr effect and ...
  • A continuum from clear to cloudy hot-Jupiter exoplanets without primordial water depletion 

    Sing, David K.; Fortney, J.J.; Wakeford, H.R.; Nikolov, N.; Kataria, T; Aigrain, Suzanne; Balleseter, GE; Burrows, A.S.; Deming, D.; Desert, J.-M; Gibson, N.; Henry, G.; Huitson, Catherine M.; Knutson, H.; Lecavelier des Etangs, A.; Pont, F.; Showman, A.P.; Vidal-Madjar, A.; Williamson, M.H.; Wilson, Paul A. (Nature Publishing Group, 2015-12-14)
    Thousands of transiting exoplanets have been discovered, but spectral analysis of their atmospheres has so far been dominated by a small number of exoplanets and data spanning relatively narrow wavelength ranges (such as ...
  • Control of the stop band of an acoustic double fishnet 

    Murray, Alasdair R.J.; Hendry, Euan; Summers, I.R.; Sambles, J. Roy; Hibbins, Alastair P. (Journal of the Acoustical Society of America, 2013)
    The acoustic transmittance of two closely spaced solid plates, each perforated with a square array of cylindrical holes, exhibits a band of near-perfect acoustic attenuation originating from hybridization between a resonance ...
  • Controlling the generation of THz radiation from metallic films using periodic microstructure 

    Polyushkin, Dmitry K.; Hendry, Euan; Barnes, William L. (Springer Verlag, 2015-04-05)
    We report on THz frequency generation via irradiation of microstructured semicontinuous silver films by femtosecond laser pulses. By patterning the film so as to produce an array of microstrips, we show that one can use ...
  • Controlling the properties of surface acoustic waves using graphene 

    Bandhu, L; Nash, GR (Springer Verlag (Germany), 2015-12-23)
    The author(s) Surface acoustic waves (SAWs) are elastic waves that propagate on the surface of a solid, much like waves on the ocean, with SAW devices used widely in communication and sensing. The ability to dynamically ...
  • Coronal mass ejections and angular momentum loss in young stars 

    Aarnio, Alicia N.; Stassun, Keivan G.; Matt, Sean P. (Cambridge University Press, 2013)
    In our own solar system, the necessity of understanding space weather is readily evident. Fortunately for Earth, our nearest stellar neighbor is relatively quiet, exhibiting activity levels several orders of magnitude lower ...
  • The correlation of dust and gas emission in star-forming environments 

    Morgan, LK; Moore, TJT; Eden, DJ; Hatchell, J; Urquhart, JS (Oxford University Press (OUP) on behalf of the Royal Astronomical Society, 2014-01-01)
    We present ammonia maps of portions of the W3 and Perseus molecular clouds in order to compare gas emission with submillimetre continuum thermal emission which are commonly used to trace the same mass component in star-forming ...
  • Counting molecular-beam grown graphene layers 

    Plaut, Annette S.; Wurstbauer, Ulrich; Pinczuk, Aron; Garcia, Jorge M.; Pfeiffer, Loren N. (American Institute of Physics, 2013)
    We have used the ratio of the integrated intensity of graphene's Raman G peak to that of the silicon substrate's first-order optical phonon peak, accurately to determine the number of graphene layers across our molecular-beam ...
  • Coupled surface plasmon polaritons on thin metal slabs corrugated on both surfaces 

    Hooper, Ian R.; Sambles, J. Roy (American Physical Society, 2004)
    A modelling study of the effect of coupled surface plasmon polaritons (SPPs) on the optical response of a thin metal film corrugated on both surfaces is presented. Initially the case of conformally corrugated metal films ...
  • Coupled surface plasmon-polariton mediated photoluminescence from a top-emitting organic light-emitting structure 

    Wedge, S.; Wasey, J. A. E.; Barnes, William L.; Sage, I. (American Institute of Physics, 2004)
    We report strong photoluminescence from a top-emitting organic light-emitting structure where emission takes place through a thin (55 nm) silver film. We show that this emission is mediated via coupled surface plasmon-polariton ...
  • Coupled surface plasmons and optical guided wave exploration of near-surface director profile 

    Yang, Fuzi; Ruan, Lizhen; Jewell, Sharon A.; Sambles, J. Roy (Institute of Physics and Deutsche Physikalische Gesellschaft, 2007)
    For a liquid crystal (LC) cell with thin silver claddings it is possible, using a high index coupling prism, to excite both surface plasmon modes and ordinary optical guided modes. In a situation where the tilt of the ...