Water/Methanol-Repellency and Wetting Mechanism of Moth Wing Surface

Gang Sun; Yan Fang

doi:10.4028/www.scientific.net/AMM.723.948

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 723Water/Methanol-Repellency and Wetting Mechanism of...

Water/Methanol-Repellency and Wetting Mechanism of Moth Wing Surface

Abstract:

The water-and methanol-repellent properties of moth wing surfaces were determined by a contact angle (CA) meter, the chemical composition and microstructures of moth wing surfaces were investigated by a Fourier transform infrared spectrometer (FT-IR) and a scanning electron microscope (SEM). The wing surface is composed of naturally hydrophobic material and possesses hierarchical rough structures. The wing surface exhibits high repellency against water (CA 139.2~155.6°) and methanol solution. The critical concentrations for wetting and spreading-wetting of methanol solution on the wing surfaces are 60% and 80%, respectively. The complex wettability of the wing surface ascribes to the coupling effect of chemical composition and micro/nanostructure. Moth wing can be used as a template for bionic design of special functional surface.

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Periodical:

Applied Mechanics and Materials (Volume 723)

Pages:

948-951

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.723.948

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Online since:

January 2015

Authors:

Gang Sun, Yan Fang*

Keywords:

Complex Wettability, Methanol, Moth Wing, Nano/Micro Structure, Superhydrophobicity

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