A biological sub-micron thickness optical broadband reflector characterized using both light and microwaves

  • Vukusic P
  • Kelly R
  • Hooper I
  • 49

    Readers

    Mendeley users who have this article in their library.
  • 31

    Citations

    Citations of this article.

Abstract

Broadband optical reflectors generally function through coherent scattering from systems comprising one of three designs: overlapped; chirped; or chaotic multilayer reflectors. For each, the requirement to scatter a broad band of wavelengths is met through the presence of a variation in nanostructural periodicity running perpendicular to the systems' outer surfaces. Consequently, the requisite total thickness of the multilayer can often be in excess of 50 μm. Here, we report the discovery and the microwave-assisted characterization of a natural system that achieves excellent optical broadband reflectivity but that is less than 1 μm thick. This system, found on the wing scales of the butterfly Argyrophorus argenteus, comprises a distinctive variation in periodicity that runs parallel to the reflecting surface, rather than perpendicular to it. In this way, the requirement for an extensively thick system is removed.

Author-supplied keywords

  • Butterfly
  • Diffraction
  • Iridescence
  • Multilayer interference
  • Structural colour

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Authors

  • P. Vukusic

  • R. Kelly

  • I. Hooper

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free