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Updated: Apr 12, 2026
Measuring the Interaction Force Between a Droplet and a Super-hydrophobic Substrate by the Optical Lever Method
Published on: June 14, 2019
Selectively splitting a droplet using superhydrophobic stripes on hydrophilic surfaces
Dong Song1, Baowei Song, Haibao Hu
1School of Marine Science and Technology, Northwestern Polytechnical University, 127 Youyi Xilu, Xi'an, 710072, Shaanxi, P. R. China. songbaowei@nwpu.edu.cn huhaibao@nwpu.edu.cn.
Abstract:
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.
