Morphology-controllable wrinkled hierarchical structure and its application to superhydrophobic triboelectric nanogenerator

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Hierarchical structures allow one to improve device performance by exploiting the synergistic effects of micro/nano multiscale components. However, the structural complexity of hierarchical structures places limits on their fabrication and applications. Herein, a novel morphology-controllable wrinkled micro/nano hierarchical structure (WHS) was developed by integrating micropatterns, nanopatterns, and wrinkles on a single substrate to overcome these limitations. Each structure could be individually controlled, which offers unlimited design diversity. The produced WHS was used as a superhydrophobic triboelectric nanogenerator. Compared to a nanogenerator with on a film structure, the WHS-based nanogenerator showed a superior contact angle of 152.5 degrees(,) which is indicative of high hydrophobicity, and an enhanced (by 608%) triboelectric effect, which was ascribed to the highly rough surface of the WHS. The WHS-based nanogenerator was used to fabricate a selfpowered and water-repellent cough detection sensor with an entirely superhydrophobic structure and stable superior sensing performance during repeated water spraying.
Publisher
ELSEVIER
Issue Date
2021-07
Language
English
Article Type
Article
Citation

NANO ENERGY, v.85

ISSN
2211-2855
DOI
10.1016/j.nanoen.2021.105978
URI
http://hdl.handle.net/10203/286282
Appears in Collection
ME-Journal Papers(저널논문)
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