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Keywords = Papilio maackii

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10 pages, 33265 KiB  
Article
3D Modelling for Photonic Crystal Structure in Papilio maackii Wing Scales
by Shu Yang, Yingwen Wang and Weihong Gao
Materials 2022, 15(9), 3334; https://doi.org/10.3390/ma15093334 - 6 May 2022
Cited by 1 | Viewed by 2489
Abstract
As a typical representative of natural structural colors, the wings of butterflies living in different zones present colors due to different chromogenic mechanisms. In this work, Papilio maackii, a common species of butterfly living in China, was studied in order to clarify [...] Read more.
As a typical representative of natural structural colors, the wings of butterflies living in different zones present colors due to different chromogenic mechanisms. In this work, Papilio maackii, a common species of butterfly living in China, was studied in order to clarify the photophysics of its wing scales. A FESEM was applied to observe the microstructure of the scales, and we found that they have a periodic photonic crystal structure. X-ray photoelectron spectroscopy was applied to clarify the wings’ chemical composition. Additionally, the optical properties of the scales were investigated using a UV-vis-NIR microspectrophotometer. Then, a simplified three-dimensional photonic crystal model was built according to the microstructure of the wing scales, and the plane-wave expansion method was used to calculate the band gap. The correlation between the calculated band gap and the practical reflective spectrum was also established for the wing scales of Papilio maackii. Full article
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