Reproducing the hierarchy of disorder for Morpho-inspired, broad-angle color reflection

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The scales of Morpho butterflies are covered with intricate, hierarchical ridge structures that produce a bright, blue reflection that remains stable across wide viewing angles. This effect has been researched extensively, and much understanding has been achieved using modeling that has focused on the positional disorder among the identical, multilayered ridges as the critical factor for producing angular independent color. Realizing such positional disorder of identical nanostructures is difficult, which in turn has limited experimental verification of different physical mechanisms that have been proposed. In this paper, we suggest an alternative model of inter-structural disorder that can achieve the same broad-angle color reflection, and is applicable to wafer-scale fabrication using conventional thin film technologies. Fabrication of a thin film that produces pure, stable blue across a viewing angle of more than 120 degrees is demonstrated, together with a robust, conformal color coating.
Publisher
NATURE PUBLISHING GROUP
Issue Date
2017-04
Language
English
Article Type
Article
Citation

SCIENTIFIC REPORTS, v.7, pp.46023

ISSN
2045-2322
DOI
10.1038/srep46023
URI
http://hdl.handle.net/10203/226676
Appears in Collection
NT-Journal Papers(저널논문)
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