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Proceedings Paper

Untwisting the polarization properties of light reflected by scarab beetles
Author(s): Luke T. McDonald; Ewan D. Finlayson; Peter Vukusic
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Paper Abstract

The spectral and angle-dependent optical properties of two scarab beetle species belonging to the genus Chrysina are presented. The species display broadband reflectivity and selectively reflect left-circularly polarized light. We use electron microscopy to detail the left-handed, twisted lamellar structure present in these biological systems and imaging scatterometry to characterize their bidirectional reflectance distribution function. We show that the broadband nature of the beetles’ reflectance originates due to the range of pitch dimensions found in the structure.

Paper Details

Date Published: 11 March 2015
PDF: 7 pages
Proc. SPIE 9341, Bioinspired, Biointegrated, Bioengineered Photonic Devices III, 93410K (11 March 2015); doi: 10.1117/12.2079496
Show Author Affiliations
Luke T. McDonald, Univ. of Exeter (United Kingdom)
Ewan D. Finlayson, Univ. of Exeter (United Kingdom)
Peter Vukusic, Univ. of Exeter (United Kingdom)

Published in SPIE Proceedings Vol. 9341:
Bioinspired, Biointegrated, Bioengineered Photonic Devices III
Luke P. Lee; John A. Rogers; Seok Hyun Andy Yun, Editor(s)

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