The Relationship between Superhydrophobicity, Self-Cleaning Performance and Microstructure of Butterfly Wing

Gang Sun; Yan Fang

doi:10.4028/www.scientific.net/AMM.727-728.273

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 727-728The Relationship between Superhydrophobicity,...

The Relationship between Superhydrophobicity, Self-Cleaning Performance and Microstructure of Butterfly Wing

Abstract:

The microstructure and hydrophobicity of butterflywing surfaces were investigated by a scanning electron microscope (SEM), an atomicforce microscope (AFM) and a contact angle meter. The relationship between hydrophobicity,self-cleaning performance and microstructuralcharacteristic was analyzed. The butterfly wing surface is of lowadhesion (water SA 1~3°) and high hydrophobicity (water CA 138~157°). Theaverage rate of CaCO₃ pollutionremoval from the wing surface is as high as 86.2%. There is a good positive correlation (R²=0.873)between pollution removal rate and roughness index of the wing surface. The coupling effects of hydrophobic material andrough microstructure contribute to the complex wettability and remarkableself-cleaning property of the wing surface. Butterfly wing can be potentiallyused as a template for design of micro-controllable superhydrophobic surfaceand nano self-cleaning material. This work may offer inspirations forbiomimetic fabrication of novel interfacial material with multi-functions.

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Periodical:

Applied Mechanics and Materials (Volumes 727-728)

Pages:

273-276

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.727-728.273

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Online since:

January 2015

Authors:

Gang Sun, Yan Fang*

Keywords:

Adhesion, Butterfly Wing, Microstructure, Self-Cleaning, Superhydrophobicity

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* - Corresponding Author

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