Replicating the Cynandra opis Butterfly's Structural Color for Bioinspired Bigrating Color Filters
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Date
2022-03-03
Publication Type
Journal Article
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yes
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Abstract
Multilayer grating structures, such as those found on the wings of the butterfly Cynandra opis, are able to interact with light to generate structural coloration. When illuminated and viewed at defined angles, such structural color is characterized by exceptional purity and brightness. To provide further insight into the mechanism of structural coloration, two-photon laser lithography is used to fabricate bioinspired bigrating nanostructures, whose optical properties may be controlled by variation of the height and period of the grating features. Through the use of both spectral measurements and finite-element method simulations, herein specific feature dimensions are identified that due to the combined effects of multilayer interference and diffraction generate excellent spectral characteristics and high color purity over the entire visible range. Additionally, it is demonstrated that variation of feature period and/or height plays a central role in controlling both hue and purity. Importantly, such tuneable bigrating structures are of significant utility in color filtering applications.
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published
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Journal / series
Volume
34 (9)
Pages / Article No.
2109162
Publisher
Wiley-VCH
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Edition / version
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Software
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Date collected
Date created
Subject
3D printing; bigrating; structural colors
Organisational unit
03887 - Wang, Jing / Wang, Jing
08821 - Fischer, Peter (Tit.-Prof.)
03914 - deMello, Andrew / deMello, Andrew
Notes
Funding
791144 - An optofluidic platform based on liquid-gradient refractive index microlens for the isolation and quantification of extracellular vesicles (EC)