Now showing items 76-95 of 1365

  • Babinet’s principle and the band structure of surface waves on patterned metal arrays 

    Edmunds, James D.; Taylor, Melita C.; Hibbins, Alastair P.; Sambles, J. Roy; Youngs, I.J. (American Institute of Physics, 2010)
    The microwave response of an array of square metal patches and its complementary structure, an array of square holes, has been experimentally studied. The resonant phenomena, which yield either enhanced transmission or ...
  • Backflow in the relaxation of a hybrid aligned nematic cell 

    Jewell, Sharon A.; Sambles, J. Roy (American Institute of Physics, 2003)
    The optical convergent-beam technique has been used to measure the changing director profile in a 4.6 µm ZLI-2293 filled hybrid aligned nematic cell when a 7 Vrms ac voltage was removed. The relaxation process has been ...
  • Band gaps in jagged and straight graphene nanoribbons tunable by an external electric field 

    Saroka, V.A.; Batrakov, K.G.; Demin, V.A.; Chernozatonskii, L.A. (IOP Publishing, 2015-03-20)
    Band gap control by an external field is useful in various optical, infrared and THz applications. However, widely tunable band gaps are still not practical due to a variety of reasons. Using the orthogonal tight-binding ...
  • Band gaps in jagged and straight graphene nanoribbons tunable by an external electric field. 

    Saroka, VA; Batrakov, KG; Demin, VA; Chernozatonskii, LA (IOP Publishing, 2015-04-15)
    Band gap control by an external field is useful in various optical, infrared and THz applications. However, widely tunable band gaps are still not practical due to a variety of reasons. Using the orthogonal tight-binding ...
  • Bayesian detection of planetary transits. A modified version of the Gregory-Loredo method for Bayesian periodic signal detection 

    Aigrain, Suzanne; Favata, F. (EDP Sciences, 2002)
    The detection of planetary transits in stellar photometric light-curves is poised to become the main method for finding substantial numbers of terrestrial planets. The French-European mission COROT (foreseen for launch in ...
  • Bayesian matching for X-ray and infrared sources in the MYStIX project 

    Naylor, T; Broos, PS; Feigelson, ED (American Astronomical Society, 2013-11-14)
    Identifying the infrared counterparts of X-ray sources in Galactic plane fields such as those of the MYStIX project presents particular difficulties due to the high density of infrared sources. This high stellar density ...
  • Benchmark problems for continuum radiative transfer. High optical depths, anisotropic scattering, and polarisation 

    Pinte, C; Harries, TJ; Min, M; Watson, AM; Dullemond, CP; Woitke, P; Menard, F; Duran-Rojas, MC (EDP Sciences for European Southern Observatory (ESO), 2009-03-11)
    Aims. Solving the continuum radiative transfer equation in high opacity media requires sophisticated numerical tools. In order to test the reliability of such tools, we present a benchmark of radiative transfer codes in a ...
  • Benchmarking the Multi-dimensional Stellar Implicit Code MUSIC 

    Goffrey, T; Pratt, J; Viallet, M; Baraffe, I; Popov, MV; Walder, R; Folini, D; Geroux, C; Constantino, T (arXiv.org, 2016-10-31)
    We present the results of a numerical benchmark study for the MUlti-dimensional Stellar Implicit Code (MUSIC) based on widely applicable two- and three-dimensional compressible hydrodynamics problems relevant to stellar ...
  • Bielectron vortices in two-dimensional Dirac semimetals 

    Downing, CA; Portnoi, ME (Springer Nature, 2017-10-12)
    Searching for new states of matter and unusual quasi-particles in emerging materials and especially low-dimensional systems is one of the major trends in contemporary condensed matter physics. Dirac materials, which host ...
  • Bielectron vortices in two-dimensional Dirac semimetals 

    Downing, CA; Portnoi, ME (Springer Nature, 2017-10-12)
    Searching for new states of matter and unusual quasi-particles in emerging materials and especially low-dimensional systems is one of the major trends in contemporary condensed matter physics. Dirac materials, which host ...
  • Bio-inspired band-gap tunable elastic optical multilayer fibers. 

    Kolle, M; Lethbridge, A; Kreysing, M; Baumberg, JJ; Aizenberg, J; Vukusic, P (Wiley, 2013-01-27)
    The concentrically-layered photonic structure found in the tropical fruit Margaritaria nobilis serves as inspiration for photonic fibers with mechanically tunable band-gap. The fibers show the spectral filtering capabilities ...
  • Bioavailability of nanoscale metal oxides TiO(2), CeO(2), and ZnO to fish 

    Johnston, B.D.; Scown, Tessa M.; Moger, Julian; Cumberland, Susan A.; Baalousha, Mohamed; Linge, Kathryn; van Aerle, Ronny; Jarvis, Kym; Lead, Jamie R.; Tyler, Charles R. (American Chemical Society, 2010-02-01)
    Nanoparticles (NPs) are reported to be a potential environmental health hazard. For organisms living in the aquatic environment, there is uncertainty on exposure because of a lack of understanding and data regarding the ...
  • Biocompatibility and toxicity of graphene quantum dots for potential application in photodynamic therapy 

    Tabish, TA; Scotton, C; Ferguson, D; Liangxu, L; Veen, A; Lowry, S; Ali, M; Jabeen, F; Ali, M; Winyard, P; Zhang, S (Future Medicine, 2018)
    Aim: Achieving reliably high production of reactive oxygen species (ROS) in photodynamic therapy (PDT) remains challenging. Graphene quantum dots (GQD) hold great promise for PDT. However, the photochemical processes leading ...
  • Biomechanics of fibrous proteins of the extracellular matrix studied by Brillouin scattering 

    Palombo, F; Winlove, CP; Edginton, RS; Green, E; Stone, N; Caponi, S; Madami, M; Fioretto, D (Royal Society, 2014-10-08)
    Brillouin light scattering (BLS) spectroscopy is a technique that is able to detect thermally excited phonons within a material. The speed of propagation of these phonons can be determined from the magnitude of the Brillouin ...
  • Black Hole Lasers Revisited 

    Leonhardt, Ulf; Philbin, Thomas G. (Springer, 2007)
    The production of Hawking radiation by a single horizon is not dependent on the high-frequency dispersion relation of the radiated field. When there are two horizons, however, Corley and Jacobson have shown that superluminal ...
  • Blue, surface-emitting, distributed feedback polyfluorene lasers 

    Heliotis, G.; Xia, R.; Bradley, D. D. C.; Turnbull, G. A.; Samuel, I. D. W.; Andrew, P.; Barnes, William L. (American Institute of Physics, 2003)
    We report the fabrication of optically-pumped solid-state distributed feedback lasers utilizing two blue-light-emitting semiconducting polyfluorenes as gain media. The lasers were readily fabricated by solution deposition ...
  • Boron nitride encapsulated graphene infrared emitters 

    Barnard, HR; Zossimova, E; Mahlmeister, NH; Lawton, LM; Luxmoore, IJ; Nash, GR (AIP Publishing, 2016-03-28)
    The spatial and spectral characteristics of mid-infrared thermal emission from devices containing a large area multilayer graphene layer, encapsulated using hexagonal boron nitride, have been investigated. The devices were ...
  • Boron-Doped Diamond Dual-Plate Deep-Microtrench Device for Generator-Collector Sulfide Sensing 

    Harvey, HM; Gross, AJ; Brooksby, P; Downard, AJ; Green, SJ; Winlove, CP; Benjamin, N; Winyard, PG; Whiteman, M; Hammond, JL; Estrela, P; Marken, F (Wiley, 2015-07-14)
    A BDD-BDD dual-plate microtrench electrode with 6μm inter-electrode spacing is investigated using generator-collector electrochemistry and shown to give microtrench depth-dependent sulfide detection down to the μM levels. ...
  • Boundary-layer effects on acoustic transmission through narrow slit cavities 

    Ward, GP; Lovelock, RK; Murray, AR; Hibbins, Alastair P.; Sambles, J. Roy; Smith, JD (American Physical Society, 2015-07-21)
    We explore the slit-width dependence of the resonant transmission of sound in air through both a slit array formed of aluminum slats and a single open-ended slit cavity in an aluminum plate. Our experimental results accord ...
  • Bovine and degenerated human annulus fibrosus: a microstructural and micromechanical comparison 

    Vergari, C; Chan, D; Clarke, A; Mansfield, J; Meakin, JR; Winlove, PC (Springer Verlag, 2017-04-04)
    The complex structure of the annulus fibrosus is strongly related to its mechanical properties. Recent work showed that it is possible to observe the relative movement of fibre bundles in loaded cow tail annulus; the aim ...