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http://dx.doi.org/10.3365/KJMM.2012.50.8.591

Fabrication and Characterization of Superhydrophobic Glass Surfaces Using Silicon Micro-mold and Thermal-reflow Process  

Kim, Seung-Jun (Dept. of Nano Fusion Technology, Pusan National University)
Kong, Jeong-Ho (Dept. of Nano Fusion Technology, Pusan National University)
Lee, Dongyun (Dept. of Nano Fusion Technology, Pusan National University)
Kim, Jong-Man (Dept. of Nano Fusion Technology, Pusan National University)
Publication Information
Korean Journal of Metals and Materials / v.50, no.8, 2012 , pp. 591-597 More about this Journal
Abstract
This paper presents regularly micro-textured glass surfaces ensuring the superhydrophobic properties in the Cassie-Baxter regime. The proposed surfaces were fabricated simply and efficiently by filling the glass material into a silicon micro-mold with periodic micro-cavities based on a thermal-reflow process, resulting in a successful demonstration of the textured glass surface with periodically-arrayed micro-pillar structures. The static and dynamic wetting properties of the micro-textured glass surfaces were characterized by measuring the static contact angle (SCA) and contact angle hysteresis (CAH), respectively. In addition, the surface wettability was estimated theoretically based on Wenzel and Cassie-Baxter wetting theories, and compared with the experimental ones. Through the experimental and theoretical observations, it was clearly confirmed that the proposed micro-textured glass surfaces showed the slippery superhydrophobic behaviors in the Cassie-Baxter wetting mode.
Keywords
glasses; surface modification; texture; wetting; superhydrophobicity;
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