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Chirality-induced p...
Chirality-induced polarization effects in the cuticle of scarab beetles: 100 years after Michelson
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- Arwin, Hans (författare)
- Linköpings universitet,Tillämpad optik,Tekniska högskolan
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- Magnusson, Roger (författare)
- Linköpings universitet,Tillämpad optik,Tekniska högskolan
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- Landin, Jan (författare)
- Linköpings universitet,Ekologi,Tekniska högskolan
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- Järrendahl, Kenneth (författare)
- Linköpings universitet,Tillämpad optik,Tekniska högskolan
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(creator_code:org_t)
- Taylor and Francis: STM, Behavioural Science and Public Health Titles / Taylor and Francis, 2012
- 2012
- Engelska.
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Ingår i: Philosophical Magazine. - : Taylor and Francis: STM, Behavioural Science and Public Health Titles / Taylor and Francis. - 1478-6435 .- 1478-6443. ; 92:12, s. 1583-1599
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- One hundred years ago Michelson discovered circular polarization in reflection from beetles. Today a novel Mueller-matrix ellipsometry setup allows unprecedented detailed characterization of the beetles polarization properties. A formalism based on elliptical polarization for description of reflection from scarab beetles is here proposed and examples are given on four beetles of different character: Coptomia laevis - a simple dielectric mirror; Cetonia aurata - a left-hand narrow- band elliptical polarizer; Anoplognathus aureus - a broad-band elliptical polarizer; and Chrysina argenteola - a left-hand polarizer for visible light at small angles, whereas for larger angles, red reflected light is right-handed polarized. We confirm the conclusion of previous studies which showed that a detailed quantification of ellipticity and degree of polarization of cuticle reflection can be performed instead of only determining whether reflections are circularly polarized or not. We additionally investigate reflection as a function of incidence angle. This provides much richer information for understanding the behaviour of beetles and for structural analysis.
Nyckelord
- scarab beetles
- Mueller-matrix ellipsometry
- elliptical polarization
- structural colours
- TECHNOLOGY
- TEKNIKVETENSKAP
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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