期刊
NANOTECHNOLOGY
卷 31, 期 17, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/ab674b
关键词
nanostructured materials; interface wetting; silver; electroplating; micro/nanostructured; mushroom-shaped pillars
资金
- National Natural Science Foundation of China [21603077]
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Engineering, Beijing [OIC201801006]
- Xiamen Science and Technology Project Foundation [3502Z20193041]
- Fundamental Research Funds for the Central Universities [JBZR1224]
- Subsidized Project for Postgraduates' Innovative Fund in Scientific Research of Huaqiao University
This manuscript presents a simple, one-step method for the fabrication of micro/nanostructured metal-based superhydrophobic surfaces via electroplating using stacked polycarbonate membranes with nanoscale and microscale pores as a template. The two-tiered mushroom-shaped silver pillar arrays include a top layer composed of nanopillars and a bottom layer composed of T-shaped micropillars. The presence of the re-entrant surface structures with a strong resistance pin the droplets to the cap's ridge and prevent water droplets from penetrating into the valleys of the rough surface, thus resulting in an increase in water contact angle (WCA). Compared with microstructured mushroom-shaped surfaces (WCA = 148 degrees, sliding angle (SA) similar to 26 degrees) and nanostructured surfaces (WCA = 151.5 degrees, SA similar to 4.8 degrees), the micro/nanostructured mushroom-shaped pillar arrays (WCA = 154.1 degrees, SA similar to 2 degrees) exhibit remarkable superhydrophobic properties with high CA and low SA. This new micro/nanostructured surface will have a potential application in metal-based superhydrophobic materials.
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