Now showing items 1-15 of 15

  • Acoustic transmission through compound subwavelength slit arrays 

    Ward, GP; Hibbins, AP; Sambles, JR; Smith, JD (American Physical Society, 2016)
    The angular dependence of the transmission of sound in air through four types of 2D slit-arrays formed of aluminium slats is explored, both experimentally and numerically. For a simple, subwavelength periodic slit-array, ...
  • A broadband metasurface Luneburg lens for microwave surface waves 

    de Pineda, JD; Mitchell-Thomas; Hibbins, AP; Sambles, JR (AIP Publishing, 2017-11)
    A broadband planar microwave Luneburg lens made of a three-layer metasurface with hexagonal symmetry is presented. This metasurface supports a transverse-electric mode confined to the surface that presents very low dispersion ...
  • Covert Images Using Surface Plasmon-Mediated Optical Polarization Conversion 

    Finlayson, ED; Hooper, IR; Lawrence, CR; Heath, M; Anderson, D; Sambles, JR; Vukusic, P (Wiley, 2018-01-15)
    Covert optical signatures are a vital element in anticounterfeiting technologies. Plasmonic surfaces offer a means of manipulating the properties of light including the realization of colored pixels and images. In this ...
  • Direct observation of negative-index microwave surface waves. 

    Dockrey, JA; Horsley, SA; Hooper, Ian R.; Sambles, JR; Hibbins, Alastair P. (Nature Publishing Group: Open Access Journals - Option C, 2016-02-23)
    Waves propagating in a negative-index material have wave-front propagation (wavevector, k) opposite in direction to that of energy flow (Poynting vector, S). Here we present an experimental realisation at microwave frequencies ...
  • Dispersion of surface waves supported by truncated metasurfaces 

    Camacho Aguilar, M; Hibbins, AP; Sambles, JR; Boix, RR; Medina, F (Institute of Electrical and Electronics Engineers (IEEE), 2017-07)
    The effects introduced in the dispersion of surface waves supported by a metasurface consisting of a negligible thickness perfectly conducting screen perforated with a finite array of slots are studied by means of a ...
  • Fluid Mobility over Corrugated Surfaces in the Stokes Regime 

    Shelley, S; Smith, JD; Hibbins, AP; Sambles, JR; Horsley, SAR (American Institute of Physics (AIP), 2016-08-01)
    An exact solution is found for laminar fluid flow along the grooves of a family of surfaces whose shape is given by the Lambert W-function. This simple solution allows for the slip length in the direction parallel to the ...
  • Fluid Mobility over Corrugated Surfaces in the Stokes Regime - datasets 

    Shelley, S; Smith, JD; Hibbins, AP; Sambles, JR; Horsley, SAR
  • Gapless states in microwave artificial graphene (article) 

    Dautova, YN; Shytov, AV; Hooper, IR; Sambles, JR; Hibbins, AP (AIP Publishing, 2017-06-30)
    A microwave analogue of graphene comprised of cylindrical metallic rods arranged in a honeycomb array is fabricated. Dispersion curves of the bound electromagnetic eigenmodes of the system were experimentally determined ...
  • Gapless states in microwave artificial graphene (dataset) 

    Dautova, J; Shytov, A; Hooper, IR; Sambles, JR; Hibbins, AP (University of Exeter, 2017-06-30)
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  • Omnidirectional surface wave cloak using an isotropic homogeneous dielectric coating 

    Mitchell-Thomas, RC; Quevedo-Teruel, O; Sambles, JR; Hibbins, AP (Nature Publishing Group, 2016)
    The field of transformation optics owes a lot of its fame to the concept of cloaking. While some experimental progress has been made towards free-space cloaking in three dimensions, the material properties required are ...
  • Omnidirectional surface wave cloak using an isotropic homogeneous dielectric coating 

    Mitchell-Thomas, RC; Quevedo-Teruel, O; Sambles, JR; Hibbins, AP (University of Exeter, 2016-07-21)
    Datasets for Fig 4
  • On the extraordinary optical transmission in parallel plate waveguides for non-TEM modes 

    Camacho, M; Boix, RR; Medina, F; Hibbins, AP; Sambles, JR (Optical Society of America (OSA), 2017-09-27)
    Extraordinary transmission has been recently measured in a parallel plate waveguide (PPWG) through a metal strip with a patterned 1-D periodic array of circular holes, the metal strip being embedded inside the PPWG. Wood’s ...
  • Theoretical and experimental exploration of finite sample size effects on the propagation of surface waves supported by slot arrays 

    Camacho, M; Boix, RR; Medina, F; Hibbins, AP; Sambles, JR (American Physical Society, 2017-06-22)
    The propagation of surface waves supported by a finite array of slots perforated on a zero thickness perfect electrically conducting screen is studied both experimentally and theoretically. To generate numerical results, ...
  • Thin structured rigid body for acoustic absorption 

    Starkey, TA; Smith, JD; Hibbins, AP; Sambles, JR; Rance, HJ (AIP Publishing, 2017-01-23)
    We present a thin acoustic metamaterial absorber, comprised of only rigid metal and air, that gives rise to near unity absorption of airborne sound on resonance. This simple, easily fabricated, robust structure comprising ...
  • Topological Modes in One Dimensional Solids and Photonic Crystals 

    Atherton, TJ; Butler, CAM; Taylor, MC; Hooper, Ian R.; Hibbins, Alastair P.; Sambles, JR; Mathur, H (American Physical Society, 2016-03-02)
    It is shown theoretically that a one-dimensional crystal with time reversal symmetry is characterized by a Z_{2} topological invariant that predicts the existence or otherwise of edge states. This is confirmed experimentally ...