Han Taeyang, Noh Hyunwoo, Park Hyun Sun, Kim Moo Hwan
Division of Advanced Nuclear Engineering, POSTECH, Pohang, Gyeongbuk, Republic of Korea.
Department of Mechanical Engineering, POSTECH, Pohang, Gyeongbuk, Republic of Korea.
Sci Rep. 2018 Oct 30;8(1):16013. doi: 10.1038/s41598-018-34407-6.
As basic research to understand the behavior of droplets on structured surfaces, we investigated droplet movement in a V-shaped groove while the volume of the droplet changes. We developed a model to explain the mechanism of the droplet movement and the effects of the wettability of the inner walls of the groove on the droplet movement. Furthermore, the model predicted new phenomena and explains the effect of the nonhomogeneous wettability on droplet movement. The predictions of the model match the experimental results well. This research can provide the basic knowledge for manipulating droplets with structured surfaces for various applications.
作为理解液滴在结构化表面行为的基础研究，我们研究了液滴体积变化时在V形凹槽中的运动。我们开发了一个模型来解释液滴运动的机制以及凹槽内壁润湿性对液滴运动的影响。此外，该模型预测了新现象并解释了非均匀润湿性对液滴运动的影响。模型的预测与实验结果吻合良好。这项研究可为利用结构化表面操控液滴以用于各种应用提供基础知识。
