Iridescence from photonic crystals and its suppression in butterfly scales

Author:

Poladian Leon12,Wickham Shelley23,Lee Kwan2,Large Maryanne C.J23

Affiliation:

1. School of Mathematics and Statistics, University of SydneySydney, New South Wales 2006, Australia

2. Optical Fibre Technology Centre, University of SydneySydney, New South Wales 2006, Australia

3. School of Physics, University of SydneySydney, New South Wales 2006, Australia

Abstract

Regular three-dimensional periodic structures have been observed in the scales of over half a dozen butterfly species. We compare several of these structures: we calculate their photonic bandgap properties; measure the angular variation of the reflection spectra; and relate the observed iridescence (or its suppression) to the structures. We compare the mechanisms for iridescence suppression in different species and conclude with some speculations about form, function, development and evolution.

Publisher

The Royal Society

Subject

Biomedical Engineering,Biochemistry,Biomaterials,Bioengineering,Biophysics,Biotechnology

Reference23 articles.

1. Diffraction structures in the wing scales of Callophrys siva siva Lycaenidae;Allyn A.C;Bull. Allyn Mus,1976

2. Altmann S.L Band theory of solids. An introduction from the point of view of symmetry. 1991 Oxford UK:Clarendon Press.

3. Electron tomography and computer visualisation of a three-dimensional ‘photonic’ crystal in a butterfly wing-scale

4. Role of photonic-crystal-type structures in the thermal regulation of a Lycaenid butterfly sister species pair

5. Structure and development of iridescent butterfly scales: Lattices and laminae

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