Now showing items 100-119 of 210

  • Molecular fluorescence above metallic gratings 

    Andrew, P.; Barnes, William L. (American Physical Society, 2001)
    We present measurements of the fluorescence of emitters located in close proximity (d<λ) to metallic grating surfaces. By measuring both the spontaneous emission lifetime and angle-dependent radiation pattern of a monolayer ...
  • The morphology of the Milky Way - I. Reconstructing CO maps from simulations in fixed potentials (dataset) 

    Price, Daniel J.; Acreman, David M.; Pettitt, Alex R.; Dobbs, Clare (University of Exeter, 2014-06-19)
    Datasets for spiral, bar, and barred-spiral smoothed particle hydrodynamical simulations used in the paper Pettitt, Dobbs, Acreman & Price 2014. Also included are the integrated longitude-velocity maps created using a ...
  • Noise properties of the CoRoT data. A planet-finding perspective 

    Aigrain, Suzanne; Pont, F.; Fressin, F.; Alapini, Aude; Alonso, R.; Auvergne, M.; Barbieri, M.; Barge, P.; Bordé, P.; Bouchy, F.; Deeg, H. J.; De la Reza, R.; Deleuil, M.; Dvorak, R.; Erikson, A.; Fridlund, M.; Gondoin, P.; Guterman, P.; Jorda, L.; Lammer, H.; Léger, A.; Llebaria, A.; Magain, P.; Mazeh, T.; Moutou, C.; Ollivier, M.; Pätzold, M.; Queloz, D.; Rauer, H.; Rouan, D.; Schneider, J.; Wuchterl, G.; Zucker, S. (EDP Sciences, 2009)
    In this short paper, we study the photometric precision of stellar light curves obtained by the CoRoT satellite in its planet-finding channel, with a particular emphasis on the time scales characteristic of planetary ...
  • Nonlinear optical excitation of plasmons in graphene: intensity and polarisation dependences 

    Constant, Thomas (Royal Society, 2016-06-15)
    Recently, we demonstrated an all-optical coupling scheme for plasmons, which takes advantage of the intrinsic nonlinear optical response of graphene. Difference frequency mixing using free-space, visible light pulses ...
  • A novel bifunctional oxygen GDE for alkaline secondary batteries 

    Li, Xiaohong; Pletcher, Derek; Russell, Andrea E.; Walsh, Frank C.; Wills, Richard G.A.; Gorman, Scott F.; Price, Stephen W.T.; Thompson, Stephen J. (Elsevier for International Society of Electrochemistry (ISE), 2013)
    This paper describes a novel procedure for the fabrication of a gas diffusion electrode (GDE) suitable for use as a bifunctional oxygen electrode in alkaline secondary batteries. The electrode is fabricated by pre-forming ...
  • Numerical model validation for mooring systems: Method and application for wave energy converters 

    Harnois, Violette; Weller, S.D.; Johanning, Lars; Thies, Philipp R.; Le Boulluec, M.; Le Roux, Dominique; Soulé, V.; Ohana, J. (Elsevier, 2015)
    The design of wave energy mooring systems is challenging: overdesign incurs a significant cost penalty, underdesign may lead to a premature failure and incorrect design could reduce the power production. Consequently, ...
  • Observation of backflow in the switch-on dynamics of a hybrid aligned nematic 

    Jewell, Sharon A.; Sambles, J. Roy (American Institute of Physics, 2004)
    The optical convergent-beam technique is used to measure, in 0.3 ms steps, the response of the director in a 4.6-µm-thick ZLI-2293 filled hybrid aligned nematic cell when a 10 kHz, 7 Vrms ac voltage is applied to the cell. ...
  • Observation of vortex dynamics in arrays of nanomagnets 

    Yu, W.; Keatley, Paul Steven; Gangmei, Prim; Marcham, Max K.; Loughran, T. H. J.; Hicken, R.J.; Cavill, Stuart A.; van der Laan, Gerrit; Childress, J.R.; Katine, J.A. (American Physical Society, 2015-05-22)
    Vortex dynamics within arrays of square ferromagnetic nanoelements have been studied by time-resolved scanningKerr microscopy (TRSKM),while x-ray photoemission electronmicroscopy has been used to investigate the equilibrium ...
  • On a solution of the Schrödinger equation with a hyperbolic double-well potential 

    Downing, C.A. (American Institute of Physics (AIP), 2013)
    We report a solution of the one-dimensional Schrödinger equation with a hyperbolic double-well confining potential via a transformation to the so-called confluent Heun equation. We discuss the requirements on the parameters ...
  • On the dynamics of dust during protostellar collapse (dataset) 

    Bate, Matthew R.; Loren-Aguilar, Pablo (University of Exeter (dataset)/Oxford University Press (paper), 2016-11-08)
    This is the dataset that was used to produce the associated paper, published in MNRAS. It contains the output from each of the SPH simulations, including dump files and the scripts used to generate the figures for the ...
  • On the mechanism of charge transport in pentacene 

    van Laarhoven, Hendrik A.; Flipse, Cees F. J.; Koeberg, Mattijs; Bonn, Mischa; Hendry, Euan; Orlandi, G.; Jurchescu, O. D.; Palstra, T. T. M.; Troisi, A. (American Institute of Physics, 2008)
    Terahertz transient conductivity measurements are performed on pentacene single crystals, which directly demonstrate a strong coupling of charge carriers to low frequency molecular motions with energies centered around 1.1 ...
  • One-way diffraction grating 

    Lockyear, Matthew J.; Hibbins, Alastair P.; White, Kevin R.; Sambles, J. Roy (American Physical Society, 2006)
    Diffraction gratings are elementary tools for much of optics and spectroscopy. Here, at microwave frequencies, we provide a new perspective on these fundamental structures. A transmission diffraction grating is presented ...
  • Operating characteristics of a semiconducting polymer laser pumped by a microchip laser 

    Turnbull, G. A.; Andrew, P.; Barnes, William L.; Samuel, I. D. W. (American Institute of Physics, 2003)
    We report the demonstration of a compact, all-solid-state polymer laser system featuring a microchip laser as the pump source. The laser was configured as a surface-emitting, two-dimensional distributed feedback laser, ...
  • Optical Control over Surface-Plasmon-Polariton-Assisted THz Transmission through a Slit Aperture 

    Hendry, Euan; Garcia-Vidal, F. J.; Martin-Moreno, L.; Gómez Rivas, J.; Bonn, Mischa; Hibbins, Alastair P.; Lockyear, Matthew J. (American Physical Society, 2008)
    We demonstrate optical control over the transmission of terahertz (THz) radiation through a single subwavelength slit in an otherwise opaque silicon wafer. The addition of periodic corrugation on each side of the wafer ...
  • Optical determination of flexoelectric coefficients and surface polarization in a hybrid aligned nematic cell 

    Mazzulla, A.; Ciuchi, F.; Sambles, J. Roy (American Physical Society, 2001)
    We present an optical study of the influence of both the flexoelectric effect and surface polarization on a hybrid-aligned nematic cell using the half-leaky guided mode technique. Tilt angle profiles, obtained from fits ...
  • Optical imaging of the effect of in-plane fields on cholesteric liquid crystals 

    Jewell, Sharon A.; Sambles, J. Roy (American Physical Society, 2008)
    The effects of in-plane electric fields on the director structure of cholesteric liquid crystals has been imaged in three dimensions using fluorescence confocal polarizing microscopy. The results show that a liquid crystal ...
  • Optical properties of a light-emitting polymer directly patterned by soft lithography 

    Lawrence, J. R.; Andrew, P.; Barnes, William L.; Buck, M.; Turnbull, G. A.; Samuel, I. D. W. (American Institute of Physics, 2002)
    We present the optical properties of a directly patterned light-emitting polymer. The patterned poly(2-methoxy-5-(3',7'-dimethyloctyloxy)-paraphenylenevinylene film is fabricated using hot embossing lithography. The effect ...
  • Optical resonances on sub-wavelength silver lamellar gratings 

    Gadsdon, Martyn Richard; Hooper, Ian R.; Sambles, J. Roy (Optical Society of America, 2008)
    The optical response of sub-wavelength silver lamellar gratings has been theoretically investigated. Two distinct types of resonance have been predicted for incident radiation with E-field perpendicular to the long axis ...
  • Optical waveguide characterization of a tristable antiferroelectric liquid crystal cell 

    Jewell, Sharon A.; Sambles, J. Roy; Goodby, J. W.; Hall, A. W.; Cowling, S. J. (American Institute of Physics, 2004)
    The optical convergent-beam waveguide technique has been used to characterize a homogeneously aligned 3 µm cell containing a liquid crystal in the antiferroelectric phase. The director structure has been quantified with ...
  • Optically guided mode study of nematic liquid crystal alignment on a zero-order grating 

    Hallam, B. T.; Sambles, J. Roy (American Physical Society, 2000)
    The characterization of a liquid crystal cell, which comprises one zero-order (that is, at the wavelength of study it is nondiffractive) diffraction grating and one rubbed polyimide-coated substrate, has been performed ...