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Guided Self‐Propelled Leaping of Droplets on a Micro‐Anisotropic Superhydrophobic Surface
Author(s) -
Liu Jie,
Guo Haoyuan,
Zhang Bo,
Qiao Shasha,
Shao Mingzhe,
Zhang Xianren,
Feng XiQiao,
Li Qunyang,
Song Yanlin,
Jiang Lei,
Wang Jianjun
Publication year - 2016
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201600224
Subject(s) - coalescence (physics) , anisotropy , materials science , nanotechnology , surface (topology) , solid surface , adhesion , optics , chemical physics , physics , geometry , composite material , mathematics , astrobiology
By introducing anisotropic micropatterns on a superhydrophobic surface, we demonstrate that water microdroplets can coalesce and leap over the surface spontaneously along a prescribed direction. This controlled behavior is attributed to anisotropic liquid–solid adhesion. An analysis relating the preferential leaping probability to the geometrical parameters of the system is presented with consistent experimental results. Surfaces with this rare quality demonstrate many unique characteristics, such as self‐powered, and relatively long‐distance transport of microdroplets by “relay” coalescence‐induced leaping.