title: Guided Self-Propelled Leaping of Droplets on a Micro-Anisotropic Superhydrophobic Surface.
abstract: 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.
authors.affiliation: Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Liu
authors.affiliation: AML and CNMM, Department of Engineering Mechanics, State Key Laboratory of Tribology, Tsinghua University, Beijing, 100084, China.
authors.forename: Haoyuan
authors.initials: H
authors.lastname: Guo
authors.affiliation: Division of Molecular and Materials Simulation, State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China.
authors.forename: Bo
authors.initials: B
authors.lastname: Zhang
authors.affiliation: AML and CNMM, Department of Engineering Mechanics, State Key Laboratory of Tribology, Tsinghua University, Beijing, 100084, China.
authors.forename: Shasha
authors.initials: S
authors.lastname: Qiao
authors.affiliation: Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
authors.forename: Mingzhe
authors.initials: M
authors.lastname: Shao
authors.affiliation: Division of Molecular and Materials Simulation, State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China.
authors.forename: Xianren
authors.initials: X
authors.lastname: Zhang
authors.affiliation: AML and CNMM, Department of Engineering Mechanics, State Key Laboratory of Tribology, Tsinghua University, Beijing, 100084, China.
authors.forename: Xi-Qiao
authors.initials: XQ
authors.lastname: Feng
authors.affiliation: AML and CNMM, Department of Engineering Mechanics, State Key Laboratory of Tribology, Tsinghua University, Beijing, 100084, China. qunyang@tsinghua.edu.cn.
authors.forename: Qunyang
authors.initials: Q
authors.lastname: Li
authors.affiliation: Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
authors.forename: Yanlin
authors.initials: Y
authors.lastname: Song
authors.affiliation: Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Jiang
authors.affiliation: Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China. wangj220@iccas.ac.cn.
authors.forename: Jianjun
authors.initials: J
authors.lastname: Wang
keywords: anisotropy; guided propulsion; microdroplets; self-propelled movement; superhydrophobicity