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Excellent Structure-Based Multifunction of Morpho Butterfly Wings: A Review
Post: 2015-06-05 02:44  View:2378
Morpho butterfly, famous for its iridescence wing scales, has gradually evolved a diversity of functions and has attracted much attention recently. On the other hand, it is known that the wing surface of Morphobutterfly has some complex and sophisticated structures. In fact, they are composed of an alternating multilayer film system of chitin and air layers, which have different refractive indexes. More importantly, these structures can interact strongly with visible light because the feature size of the structures is in the same order of magnitude with light wavelength. It is noteworthy that it is these optical architectures that cause the excellent multifunction including structural color, antireflection, thermal response, selective vapour response, directional adhesion, superhydrophobicity and so on. This review mainly covers the excellent multifunctional features of Morpho butterfly wings with representative functional structures of multilayer film system, photonic crystal and ridges. Then, the mechanism of the structure-based optical multifunction of Morpho butterfly is analyzed. In order to facilitate mechanism analysis, the models of bionic functional structures are reported, as well as the interaction process between the multiscale structures and the external media It is concluded that these functions of Morpho butterfly wings have inevitable and corresponding regularity connection with the structural parameters and the dielectric coefficient of the filled medium. At last, the future direction and prospects of this field are briefly addressed. It is hoped that this review could be beneficial to provide some innovative inspirations and new ideas to the researchers in the fields of engineering, biomedicine, and materials science.
 
This work is carried out by Shichao Niu, Bo Li, Zhengzhi Mu et al.
Key Laboratory of Bionic Engineering (Ministry of Education, China), Jilin University, Changchun 130022, China
and published on the JBE Volume 12, Issue 2, April 2015, Pages 170–189
 
Full text is available at http://www.sciencedirect.com/science/article/pii/S1672652914601116  
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