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http://dx.doi.org/10.3795/KSME-A.2008.32.5.424

The Effect of Micro Nano Multi-Scale Structures on the Surface Wettability  

Lee, Sang-Min (부산대학교 기계공학부)
Jung, Im-Deok (부산대학교 기계공학부)
Ko, Jong-Soo (부산대학교 기계공학부, 부산대학교 정밀정형및금형가공연구소(ERC/NSDM))
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.32, no.5, 2008 , pp. 424-429 More about this Journal
Abstract
Surface wettability in terms of the size of the micro nano structures has been examined. To evaluate the influence of the nano structures on the contact angles, we fabricated two different kinds of structures: squarepillar-type microstructure with nano-protrusions and without nano-protrusions. Microstructure and nanostructure arrays were fabricated by deep reactive ion etching (DRIE) and reactive ion etching (RIE) processes, respectively. And plasma polymerized fluorocarbon (PPFC) was finally deposited onto the fabricated structures. Average value of the measured contact angles from microstructures with nanoprotrusions was $6.37^{\circ}$ higher than that from microstructures without nano-protrusions. This result indicates that the nano-protrusions give a crucial effect to increase the contact angle.
Keywords
Superhydrophobic; Wettability; Micro Nano Structure; Lotus Effect; Contact Angle;
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Times Cited By KSCI : 1  (Citation Analysis)
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