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Issue 7, 2010
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A robust superhydrophobic and superoleophobic surface with inverse-trapezoidal microstructures on a large transparent flexible substrate

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Abstract

A robust superhydrophobic and superoleophobic surface is demonstrated. On a large-size template of the transparent polydimethylsiloxane (PDMS) elastomer surface, perfectly ordered microstructures with an inverse-trapezoidal cross section are fabricated with two consecutive PDMS replication processes and a three-dimensional diffuser lithography technique. The hydrophobicity and transparency were improved by additional coating of a fluoropolymer layer. The robustness of superhydrophobicity was confirmed by the water droplet impinging test. This transparent, flexible, and superhydrophobic surface provides a new approach for self-cleaning surfaces.

Graphical abstract: A robust superhydrophobic and superoleophobic surface with inverse-trapezoidal microstructures on a large transparent flexible substrate

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Article information


Submitted
14 Dec 2009
Accepted
29 Jan 2010
First published
10 Feb 2010

Soft Matter, 2010,6, 1401-1404
Article type
Communication

A robust superhydrophobic and superoleophobic surface with inverse-trapezoidal microstructures on a large transparent flexible substrate

M. Im, H. Im, J. Lee, J. Yoon and Y. Choi, Soft Matter, 2010, 6, 1401
DOI: 10.1039/B925970H

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