期刊
APPLIED OPTICS
卷 49, 期 22, 页码 4246-4254出版社
OPTICAL SOC AMER
DOI: 10.1364/AO.49.004246
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- School of Physics at the University of Exeter, Imerys Minerals, Great Western Research
- U.S. Air Force Office of Scientific Research and European Office of Aerospace Research and Development (AFOSR/EOARD) [FA8655-08-1-3012]
- Biotechnology and Biological Sciences Research Council [BB/E000177/1, JF16983] Funding Source: researchfish
- BBSRC [BB/E000177/1] Funding Source: UKRI
Recent work discovered the remarkable optical scattering properties of the scales of the white beetle Cyphochilus. It was suggested that its brilliant whiteness and brightness were due to optimization of the microstructure within its scales. Here we compare the microstructure of Cyphochilus scales to those of two other white beetles, Lepidiota stigma and Calothyrza margaritifera. Extensive optical modeling and experimental data suggest that each species displays structural optimization designed to maximize optical scatter. Optimization of the scale filling fraction is observed, as well as optimization of scattering center spacing and diameter. Cyphochilus, in particular, displays a high degree of structural optimization, resulting in its bright white appearance. (C) 2010 Optical Society of America
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