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- Title
Optical Detection of Vapor Mixtures Using Structurally Colored Butterfly and Moth Wings.
- Authors
Piszter, Gábor; Kertész, Krisztián; Bálint, Zsolt; Biró, László Péter
- 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.
- Subjects
GASES; DEACETYLATION; MOTHS; PRINCIPAL components analysis; BUTTERFLIES; STRUCTURAL colors
- Publication
Sensors (14248220), 2019, Vol 19, Issue 14, p3058
- ISSN
1424-8220
- Publication type
Article
- DOI
10.3390/s19143058