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http://dx.doi.org/10.5407/JKSV.2018.16.3.035

Experimental study of spreading phenomena on hydrophilic micro-textured surfaces depending on surface geometrical features  

Jang, Munyoung (Department of Mechanical Design Engineering, Pukyong National University)
Park, Sehyeon (Department of Mechanical Design Engineering, Pukyong National University)
Yu, Dong In (Department of Mechanical Design Engineering, Pukyong National University)
Publication Information
Journal of the Korean Society of Visualization / v.16, no.3, 2018 , pp. 35-39 More about this Journal
Abstract
In multiphase systems, surface wettability is one of dominant design parameters to enhance system performance. Since surface wettability can be maximized and minimized with micro-textured surfaces, therefore micro-textured surfaces are widely countered in various research and engineering fields. In this study, for better understanding of micrometer scaled surface wettability, spreading phenomena is experimentally investigated on the hydrophilic micro-textured surfaces. By photolithography and conventional dry etching method, there are prepared the surfaces with uniformly arrayed micro-pillars. The interfacial motions of a water droplet on the test sections are visualized by high speed camera in top view. On the basis of visualization data, it is analyzed the relation between dynamic coefficient and geometrical features on micro-textured surfaces.
Keywords
Wettability; Spreading; micro; hydrophilic; MEMS;
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