期刊
APPLIED SURFACE SCIENCE
卷 433, 期 -, 页码 336-340出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2017.10.033
关键词
Leidenfrost droplets; Self-propulsion; Micropillared surface; Gradient wettability
类别
资金
- National Natural Science Foundation of China [51776128, 51176123]
Motion of matter requires application of asymmetric potential. In this work, we explored the self-propulsion of Leidenfrost droplet on hot micropillared surfaces with gradient wettability. The surface fabricated with micropillars displays unidirectional properties. It was found that Leidenfrost droplets on this surface self-propelled from the smaller superficial area of micropillars (SSAM) towards the larger superficial area of micropillars (LSAM). The self-propulsion mechanism is proposed based on the self-rotation of Leidenfrost droplets and the theoretical model is well matched with the experimental findings. (C) 2017 Elsevier B.V. All rights reserved.
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