Biomimetic Chitin-Silk Hybrids: An Optically Transparent Structural Platform for Wearable Devices and Advanced Electronics

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The cuticles of insects and marine crustaceans are fascinating models for man-made advanced functional composites. The excellent mechanical properties of these biological structures rest on the exquisite self-assembly of natural ingredients, such as biominerals, polysaccharides, and proteins. Among them, the two commonly found building blocks in the model biocomposites are chitin nanofibers and silk-like proteins with beta-sheet structure. Despite being wholly organic, the chitinous protein complex plays a key role for the biocomposites by contributing to the overall mechanical robustness and structural integrity. Moreover, the chitinous protein complex alone without biominerals is optically transparent (e.g., dragonfly wings), thereby making it a brilliant model material system for engineering applications where optical transparency is essentially required. Here, inspired by the chitinous protein complex of arthropods cuticles, an optically transparent biomimetic composite that hybridizes chitin nanofibers and silk fibroin (beta-sheet) is introduced, and its potential as a biocompatible structural platform for emerging wearable devices (e.g., smart contact lenses) and advanced displays (e.g., transparent plastic cover window) is demonstrated.
Publisher
WILEY-V C H VERLAG GMBH
Issue Date
2018-06
Language
English
Article Type
Article
Keywords

MECHANICAL-PROPERTIES; BIOLOGICAL-MATERIALS; NANOTROUGH NETWORKS; CIRCULAR-DICHROISM; HIGHLY TRANSPARENT; GREEN ELECTRONICS; INSECT CUTICLE; FIBROIN; FILMS; NANOFIBERS

Citation

ADVANCED FUNCTIONAL MATERIALS, v.28, no.24, pp.1705480

ISSN
1616-301X
DOI
10.1002/adfm.201705480
URI
http://hdl.handle.net/10203/244574
Appears in Collection
MS-Journal Papers(저널논문)
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