Bioinspired superhydrophobic surfaces with directional Adhesion

Jiale Yong; Qing Yang; Feng Chen; Dongshi Zhang; Guangqing Du; Hao Bian; Jinhai Si; Xun Hou

doi:10.1039/C3RA46929H

Bioinspired superhydrophobic surfaces with directional Adhesion

Jiale Yong,^a Qing Yang,^a Feng Chen,*^a Dongshi Zhang,^a Guangqing Du,^a Hao Bian,^a Jinhai Si^a and Xun Hou^a

* Corresponding authors

^a State Key Laboratory for Manufacturing System Engineering & Key Laboratory of Photonics Technology for Information of Shaanxi Province, School of Electronics & Information Engineering, Xi'an Jiaotong University, Xi'an, P.R. China
E-mail: chenfeng@mail.xjtu.edu.cn

Abstract

Butterfly wings have the ability to directionally control the movement of water microdroplets. However, the realization of artificial directional sliding biosurfaces has remained challenging. Inspired by butterfly wings, a new kind of directional patterned surface is developed to achieve superhydrophobicity and anisotropic adhesive properties at the one-dimensional level. The surface is composed of a hydrophobic triangle array and surrounding superhydrophobic structure. On the as-prepared surface, a droplet rolls along one direction distinctly easier than its opposite direction. The maximum anisotropy of sliding angles along two opposite directions can reach 21°. This unique ability is ascribed to the direction-dependent arrangement of the two-dimensional (2D) triangle array patterns. The directional adhesive superhydrophobic surfaces could be potentially applied in novel microfluid-controllable devices and directional easy-cleaning coatings.

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Publication details

The article was received on 22 Nov 2013, accepted on 10 Jan 2014 and first published on 14 Jan 2014

Article type: Paper

DOI: 10.1039/C3RA46929H

Citation: RSC Adv., 2014,4, 8138-8143

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Bioinspired superhydrophobic surfaces with directional Adhesion

J. Yong, Q. Yang, F. Chen, D. Zhang, G. Du, H. Bian, J. Si and X. Hou, RSC Adv., 2014, 4, 8138
DOI: 10.1039/C3RA46929H
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Bioinspired superhydrophobic surfaces with directional Adhesion

Abstract

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Publication details

Bioinspired superhydrophobic surfaces with directional Adhesion

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