Diamond-Structured Titania Photonic-Bandgap Crystals from Biological Templates

Authors

  • Jeremy W. Galusha,

    1. Department of Chemistry and Department of Physics, University of Utah, 315 S 1400 E, Rm 2020, Salt Lake City, UT 84112 (USA)
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  • Matthew R. Jorgensen,

    1. Department of Chemistry and Department of Physics, University of Utah, 315 S 1400 E, Rm 2020, Salt Lake City, UT 84112 (USA)
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  • Michael H. Bartl

    Corresponding author
    1. Department of Chemistry and Department of Physics, University of Utah, 315 S 1400 E, Rm 2020, Salt Lake City, UT 84112 (USA)
    • Department of Chemistry and Department of Physics, University of Utah, 315 S 1400 E, Rm 2020, Salt Lake City, UT 84112 (USA).
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Abstract

original image

Photonic crystal scales with a diamond-based lattice from the weevilLamprocyphus augustus are transformed into a high-dielectric titania replica by a biotemplating double-imprint route. Multidirectional optical reflectance spectroscopy of the replicated structure gives an angle-independent reflection band in the visible spectrum, in agreement with photonic band structure calculations, which reveal the formation of a complete photonic bandgap at visible frequencies.

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