Guided Self-Propelled Leaping of Droplets on a Micro-Anisotropic Superhydrophobic Surface
Guided Self-Propelled Leaping of Droplets on a Micro-Anisotropic Superhydrophobic Surface
复制标题
微各向异性超疏水表面上液滴引导自推进跳跃
DOI：
10.1002/anie.201600224
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发表时间：
2016-03-18
影响因子：
16.6
通讯作者：
Wang, Jianjun
中科院分区：
文献类型：
--
作者：
Liu, Jie;Guo, Haoyuan;Wang, Jianjun
通过在超疏水表面上引入各向异性的微图案，我们证明了水微滴可以沿着规定的方向自发地聚结并跃过表面。这种受控行为归因于各向异性的液固粘附。对系统几何参数与优先跃迁概率的关系进行了分析，结果与实验结果一致。具有这种罕见品质的表面表现出许多独特的特性，例如自供电，以及通过继电器聚结诱导的跳跃进行相对长距离的微滴传输。
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.