期刊
SOFT MATTER
卷 15, 期 10, 页码 2135-2139出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8sm02584c
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资金
- Beijing Natural Science Foundation [2194083]
- National Natural Science Foundation of China (NSFC) [21822302, 21434001]
- NSFC-ISF Research Program - NSFC [51561145002]
- Israel Science Foundation (ISF)
- Army Research Office [885/15]
- [W911NF-17-1-0003]
The movement of evaporating liquid droplets on a surface can be triggered by the Marangoni effect arising fromheterogeneities in the surface tension or a gradient in the surface energy of the substrate. Here, we show that, on a high energy surface that remains uniform, the motion of two pure liquid droplets can be induced by a gradient in the liquid vapor resulting from evaporation. The droplets always attract each other, moving fromthe high evaporation side to the low evaporation side, to reduce energy dissipation. By varying the volume of the droplets or the distance between droplets, the motion of the droplets can be effectively controlled.
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