Browsing Mathemateg a Ffiseg / Mathematics & Physics by Author "Snoswell, David R. E."

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Browsing Mathemateg a Ffiseg / Mathematics & Physics by Author "Snoswell, David R. E."

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  • Finlayson, Christopher Edward; Spahn, Peter; Snoswell, David R. E.; Yates, Gabrielle; Kontogeorgos, Andreas; Haines, Andrew I.; Hellmann, G. Peter; Baumberg, Jeremy J. (2011-02-22)
    A breakthrough in the field of large area photonic structures is reported, based on permanent ordering of solid polymeric films of sub-micrometer spheres by edge rotational-shearing. The resulting high-quality polymer opal ...
  • Haines, Andrew I.; Finlayson, Christopher Edward; Snoswell, David R. E.; Spahn, Peter; Hellmann, G. Peter; Baumberg, Jeremy J. (2012-11-20)
    Hyperspectral goniometry reveals anisotropic scattering which dominates the visual appearance of self-assembled polymer opals. The technique allows reconstruction of the reciprocal-space of nanostructures, and indicates ...
  • Imai, Yusuke; Finlayson, Christopher Edward; Goldberg-Oppenheimer, P; Zhao, Qibin; Spahn, Peter; Snoswell, David R. E.; Haines, Andrew I.; Hellmann, G. Peter; Baumberg, Jeremy J. (2012)
    Electrically conductive polymeric 3D photonic crystals are prepared by the shear ordering of composites consisting of monodisperse core-shell polymer spheres and single-walled carbon nanotubes (SWNTs). Strong iridescent ...
  • Snoswell, David R. E.; Creaton, Peter; Finlayson, Christopher Edward; Vincent, Brian (2011-11-01)
    When aqueous suspensions of 1 mu m, negatively charged polystyrene particles are subject to a I kHz alternating electric field of strength greater than 7 kV(rms) m(-1), dynamic elliptical dusters of particles spontaneously ...
  • Kontogeorgos, Andreas; Snoswell, David R. E.; Finlayson, Christopher Edward; Baumberg, Jeremy J. (2010-12-03)
    We use elastically induced phase transitions to break the structural symmetry of self-assembled nanostructures, producing significantly modified functional properties. Stretching ordered polymer opals in different directions ...
  • Finlayson, Christopher Edward; Haines, Andrew I.; Snoswell, David R. E.; Kontogeorgos, Andreas; Vignolini, Silvia; Baumberg, Jeremy J.; Spahn, Peter; Hellmann, G. Peter (2011)
    We report how the strength of resonant Bragg reflection from polymeric photonic crystals (polymer opals) varies linearly with the refractive-index contrast, Δn, in contrast to the quadratic buildup of Fresnel reflections ...
  • Spahn, P.; Finlayson, C. E.; Etah, W. Mbi; Snoswell, David R. E.; Baumberg, J. J.; Hellmann, G. P. (2011-05-16)
    Synthetic opals, based on self-assembled arrays of core-shell (bead/matrix) polymer microspheres, are a promising platform for next-generation photonic structures, coatings and sensors. The refractive index contrast (Delta ...
  • Finlayson, Christopher Edward; Goddard, Chris; Papachristodoulou, Elpida; Snoswell, David R. E.; Kontogeorgos, Andreas; Spahn, Peter; Hellmann, G. Peter; Hess, Ortwin; Baumberg, Jeremy J. (2011)
    We demonstrate the production of high-quality polymer opal fibers in an industrially-scalable process. These fibers exhibit structural color, based on the self-assembly of sub-micron core-shell particles, with a spectrum ...
  • Finlayson, Christopher Edward; Snoswell, David R. E.; Spahn, Peter; Baumberg, Jeremy J. (2011-06)
    Polymer opal photonic-crystal fibers containing self-assembled submicron core-shell particles exhibit stretch-tunable color. These mechanically robust fibers can be produced in an industrially scalable extrusion process.

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