Issue 33, 2012
From the journal:

Soft Matter

Robust superomniphobic surfaces with mushroom-like micropillar arrays†

Seong Min Kang,a   Sang Moon Kim,a   Hong Nam Kim,a   Moon Kyu Kwak,b   Dong Ha Tahkc  and  Kahp Y. Suh*a  

* Corresponding authors

a School of Mechanical and Aerospace Engineering, Division of WCU Multiscale Mechanical Design, Seoul National University, Gwanak_1, Gwanak-ro, Gwanak-gu, Seoul 151-742, Korea
E-mail: sky4u@snu.ac.kr
Fax: +82-2-883-0179
Tel: +82-2-880-9103

b Department of Mechanical Engineering, Kyungpook National University, Daehak-ro, Pook-gu, Daegu 702-701, Korea

c Research & Development Center, Minuta Technology Co., Osan-Si, Gyeonggi-Do 447-210, Korea

Abstract

We present a simple method for the fabrication of robust superomniphobic surfaces with high transmittance (>90%) and durability (<6 months). The method consists of direct micromolding of mushroom-like micropillars and C4F8 gas surface treatment. Such re-entrant structures were found to be highly resistant against wetting by various liquids and oils with a wide range of surface tensions from 22.3 (ethanol) to 72.1 mN m−1 (water). Optimal structural parameters were derived based on the measurements of static contact angle and contact angle hysteresis.

Graphical abstract: Robust superomniphobic surfaces with mushroom-like micropillar arrays

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Article information

DOI
https://doi.org/10.1039/C2SM25879J
Article type
Communication
Submitted
16 Apr 2012
Accepted
02 Jul 2012
First published
17 Jul 2012

Soft Matter, 2012,8, 8563-8568

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Robust superomniphobic surfaces with mushroom-like micropillar arrays

S. M. Kang, S. M. Kim, H. N. Kim, M. K. Kwak, D. H. Tahk and K. Y. Suh, Soft Matter, 2012, 8, 8563 DOI: 10.1039/C2SM25879J

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