Robust superomniophobic surfaces with mushroom-like micropillar arrays
- Robust superomniophobic surfaces with mushroom-like micropillar arrays
- 김홍남; Seong Min Kang; Sang Moon Kim; Moon Kyu Kwak; Dong Ha Tahk; Kahp Y. Suh
- Issue Date
- Soft Matter
- VOL 8-8568
- 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.
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