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Sensors (Basel)

Title:		Optical Detection of Vapor Mixtures Using Structurally Colored Butterfly and Moth Wings
Author(s):		Piszter G; Kertesz K; Balint Z; Biro LP;
Address:		"Institute of Technical Physics and Materials Science, Centre for Energy Research, P.O. Box 49, H-1525 Budapest, Hungary. piszter@mfa.kfki.hu. Institute of Technical Physics and Materials Science, Centre for Energy Research, P.O. Box 49, H-1525 Budapest, Hungary. Hungarian Natural History Museum, 13 Baross St., H-1088 Budapest, Hungary"
Journal Title:		Sensors (Basel)
Year:		2019
Volume:		20190711
Issue:		14
Page Number:		-
DOI:		10.3390/s19143058
ISSN/ISBN:		1424-8220 (Electronic) 1424-8220 (Linking)
Abstract:		"Photonic nanoarchitectures in the wing scales of butterflies and moths are capable of fast and chemically selective vapor sensing due to changing color when volatile vapors are introduced to the surrounding atmosphere. This process is based on the capillary condensation of the vapors, which results in the conformal change of the chitin-air nanoarchitectures and leads to a vapor-specific optical response. Here, we investigated the optical responses of the wing scales of several butterfly and moth species when mixtures of different volatile vapors were applied to the surrounding atmosphere. We found that the optical responses for the different vapor mixtures fell between the optical responses of the two pure solvents in all the investigated specimens. The detailed evaluation, using principal component analysis, showed that the butterfly-wing-based sensor material is capable of differentiating between vapor mixtures as the structural color response was found to be characteristic for each of them"
Keywords:		"Acetic Acid/analysis/chemistry Animals *Butterflies/physiology Ethanol Male *Moths/physiology Optics and Photonics Pigmentation Principal Component Analysis Spectrophotometry/instrumentation *Volatile Organic Compounds/analysis/chemistry Wings, Animal/ana;"
Notes:		"MedlinePiszter, Gabor Kertesz, Krisztian Balint, Zsolt Biro, Laszlo Peter eng K 111741/Orszagos Tudomanyos Kutatasi Alapprogramok/ K 115724/Orszagos Tudomanyos Kutatasi Alapprogramok/ Switzerland 2019/07/25 Sensors (Basel). 2019 Jul 11; 19(14):3058. doi: 10.3390/s19143058"