Selectively splitting a droplet using superhydrophobic stripes on hydrophilic surfaces.
Selectively splitting a droplet using superhydrophobic stripes on hydrophilic surfaces.
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DOI：
10.1039/c5cp01530h
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发表时间：
2015-05
期刊：
影响因子：
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通讯作者：
D. Song;Baowei Song;Hai-bao Hu;Xiaosong Du;Feng Zhou
中科院分区：
文献类型：
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作者：
D. Song;Baowei Song;Hai-bao Hu;Xiaosong Du;Feng Zhou
通过选择性涂漆在亲水表面上制造超疏水图案。研究了水滴在这些混合表面上的撞击过程。液滴可以通过高速撞击具有单个条纹的亲水表面而分裂。液滴分裂的时间与撞击速度无关，并且小于液滴撞击完全超疏水表面的接触时间。通过调整原始液滴的着陆位置可以精确控制分裂的微型液滴的体积比。通过增加条纹数量，液滴可以均匀地分裂成更多的小弹珠。
Superhydrophobic patterns were fabricated on hydrophilic surfaces by selective painting. The impinging process of water droplets on these hybrid surfaces was investigated. The droplet can be split by impinging on the hydrophilic surface with a single stripe at a high velocity. The time to split the droplet is independent of the impact velocity and it is smaller than the contact time of a droplet impinging on the fully superhydrophobic surface. The volume ratios of the split mini-droplets could be precisely controlled by adjusting the landing position of the original droplet. The droplet could be split uniformly into more mini-marbles by increasing the stripe numbers.