Alignment of crystal orientations of the multi-domain photonic crystals in Parides sesostris wing scales
| Autor: | Shinya Yoshioka, Shuichi Kinoshita, Hideaki Fujita, B. Matsuhana |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Materials science
Band gap Biomedical Engineering Biophysics Physics::Optics Color Bioengineering Biochemistry law.invention Biomaterials Crystal Optics Microscopy Electron Transmission law Parides sesostris Animals Wings Animal Crystallization Research Articles Photonic crystal biology business.industry Microstructure biology.organism_classification Iridescence Microscopy Electron Scanning business Butterflies Single crystal Biotechnology |
| Zdroj: | Journal of The Royal Society Interface. 11:20131029 |
| ISSN: | 1742-5662 1742-5689 |
| DOI: | 10.1098/rsif.2013.1029 |
| Popis: | It is known that the wing scales of the emerald-patched cattleheart butterfly, Parides sesostris , contain gyroid-type photonic crystals, which produce a green structural colour. However, the photonic crystal is not a single crystal that spreads over the entire scale, but it is separated into many small domains with different crystal orientations. As a photonic crystal generally has band gaps at different frequencies depending on the direction of light propagation, it seems mysterious that the scale is observed to be uniformly green under an optical microscope despite the multi-domain structure. In this study, we have carefully investigated the structure of the wing scale and discovered that the crystal orientations of different domains are not perfectly random, but there is a preferred crystal orientation that is aligned along the surface normal of the scale. This finding suggests that there is an additional factor during the developmental process of the microstructure that regulates the crystal orientation. |
| Databáze: | OpenAIRE |
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