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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 22 — Aug. 1, 2010
  • pp: 4246–4254

Structural optimization for broadband scattering in several ultra-thin white beetle scales

Stephen M. Luke, Benny T. Hallam, and Peter Vukusic  »View Author Affiliations


Applied Optics, Vol. 49, Issue 22, pp. 4246-4254 (2010)
http://dx.doi.org/10.1364/AO.49.004246


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Abstract

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.

© 2010 Optical Society of America

OCIS Codes
(290.5850) Scattering : Scattering, particles
(160.1435) Materials : Biomaterials
(160.4236) Materials : Nanomaterials

ToC Category:
Materials

History
Original Manuscript: April 2, 2010
Revised Manuscript: June 4, 2010
Manuscript Accepted: June 4, 2010
Published: July 28, 2010

Virtual Issues
Vol. 5, Iss. 12 Virtual Journal for Biomedical Optics

Citation
Stephen M. Luke, Benny T. Hallam, and Peter Vukusic, "Structural optimization for broadband scattering in several ultra-thin white beetle scales," Appl. Opt. 49, 4246-4254 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-22-4246

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