Fundamental studies on micro-droplet movement by Marangoni and capillary effects
Fundamental studies on micro-droplet movement by Marangoni and capillary effects
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DOI：
10.1016/j.sna.2003.12.007
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发表时间：
2004-09
影响因子：
4.6
通讯作者：
Y. Tseng;F. Tseng;Yu-Feng Chen;C. Chieng
中科院分区：
文献类型：
--
作者：
Y. Tseng;F. Tseng;Yu-Feng Chen;C. Chieng
本工作是对各种尺寸的微升液滴在温度梯度表面上运动的基础性研究。采用高速CCD摄像机记录液滴的运动历史，并基于第一性原理方程对液滴运动过程进行数值模拟。计算结果与实验观测结果一致。研究表明，温度梯度、液滴间的动态后退/前进接触角变化以及液滴内部流场是决定Marangoni效应和毛细效应驱动下微液滴运动行为的关键参数。
This work is a fundamental study on the movement of various sized micro-liter droplets on a surface subjected to temperature gradients. The histories of droplet movement are recorded by high-speed CCD camera and are simulated by numerical methods based on first principle equations. The agreement between computations and experimental observations are obtained. The study indicates that temperature gradients, the change of dynamic receding/advancing contact angles across the droplets, and the flowfields inside the droplet are the key parameters determining the moving behavior of the micro-droplet driven by Marangoni and capillary effects.