期刊
APPLIED SURFACE SCIENCE
卷 285, 期 -, 页码 205-210出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2013.08.037
关键词
Copper; Superhydrophobic; Hierarchical surface structure; Contact angle; Sliding angle
类别
资金
- Natural Science Foundation of China [51103036, 51203183]
- Natural Science Foundation of Hunan province [10JJ4033, 11JJ3047]
- Youth Foundation of Hunan Educational Committee [118035]
- Science Foundation of Hunan University of Technology [2011HZX06]
A novel and facile avenue was developed to successfully fabricate a regular hierarchical surface structure on a copper sheet via the combination of polydimethylsiloxane (PDMS) template and chemical etching method in this paper. The as-prepared hierarchical surface structure was comprised of uniform-sized microprotrusions and nanostructures which was similar to the natural lotus leaf. After modified by stearic acid, the surface was covered with a layer of hydrophobic chemical groups and became superhydrophobic. The values of its water contact angle and sliding angle were about 153 degrees and 7 degrees, respectively. Its wettability kept rather stable when it was exposed to humid conditions for 3 months. This study provides a new way to fabricate uniform surface microstructures that are highly similar to natural biological surfaces on metal materials. (C) 2013 Elsevier B.V. All rights reserved.
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