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Polarizing properties and structure of the cuticle of scarab beetles from the Chrysina genus
Linköping University, Department of Physics, Chemistry and Biology, Applied Optics . Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Physics, Chemistry and Biology, Applied Optics . Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0001-9229-2028
Linköping University, Department of Physics, Chemistry and Biology, Applied Optics . Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0003-2749-8008
2016 (English)In: PHYSICAL REVIEW E, ISSN 2470-0045, Vol. 94, no 1, 012409- p.Article in journal (Refereed) Published
Abstract [en]

The optical properties of several scarab beetles have been previously studied but few attempts have been made to compare beetles in the same genus. To determine whether there is any relation between specimens of the same genus, we have studied and classified seven species from the Chrysina genus. The polarization properties were analyzed with Mueller-matrix spectroscopic ellipsometry and the structural characteristics with optical microscopy and scanning electron microscopy. Most of the Chrysina beetles are green colored or have a metallic look (gold or silver). The results show that the green-colored beetles polarize reflected light mainly at off-specular angles. The gold-colored beetles polarize light left-handed near circular at specular reflection. The structure of the exoskeleton is a stack of layers that form a cusplike structure in the green beetles whereas the layers are parallel to the surface in the case of the gold-colored beetles. The beetle C. gloriosa is green with gold-colored stripes along the elytras and exhibits both types of effects. The results indicate that Chrysina beetles can be classified according to these two major polarization properties.

Place, publisher, year, edition, pages
AMER PHYSICAL SOC , 2016. Vol. 94, no 1, 012409- p.
National Category
Mathematical Analysis
Identifiers
URN: urn:nbn:se:liu:diva-130835DOI: 10.1103/PhysRevE.94.012409ISI: 000380116500010OAI: oai:DiVA.org:liu-130835DiVA: diva2:955824
Note

Funding Agencies|Knut and Alice Wallenberg foundation; Swedish Research Council; Centre in Nano Science and Nano Technology (CeNano) at Linkoping University

Available from: 2016-08-26 Created: 2016-08-26 Last updated: 2016-09-15

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Fernandez Del Rio, LiaArwin, HansJärrendahl, Kenneth
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