Journal
JOURNAL OF THE ROYAL SOCIETY INTERFACE
Volume 6, Issue -, Pages S233-S242Publisher
ROYAL SOC
DOI: 10.1098/rsif.2008.0353.focus
Keywords
optics; colour; butterfly; photonic crystal
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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.
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