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OnderzoekVan Swinderen Institute

Physics: Prof. dr. D.G. Stavenga: Biological photonic devices: eyes and wings of moths and butterflies

Roster

WhenWhere
25 October 2007 FWN-Building 5111.0080, Nijenborgh 4, 9747 AG, Groningen
Speaker: Physics: Prof. dr. Doekele Stavenga
Affiliation: Univ. of Groningen, Dept. of Neurobiophysics
Title: Biological photonic devices: eyes and wings of moths and butterflies
Date: 25-10-2007
Start: 16.00
Location: FWN-Building 5111.0080

Abstract

Butterflies employ various optical principles for coloring their wings:
incoherent scattering, multilayer iridescence, and photonic crystals.
Nipple layers that act as anti-reflection coatings are present in the
wings of some butterfly species as well as in the corneal facet lenses
of many butterflies. Butterfly eyes are complex integrated optical
systems, with gradient index lenses, optical fibers, and selective
spectral filters that optimize vision. The eyes of moths and skippers
behave as metamaterial with a negative refractive index.


Last modified:12 September 2014 11.21 a.m.