Liquid Wettability and Micro-droplet Self-Movements on Heterogeneous Solid Surfaces

Junfeng Zhang, D. Kwok
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引用次数: 2

Abstract

In this paper, we studied the contact angle behaviors on heterogeneous surfaces by a mean-filed free-energy lattice Boltzmann method recently proposed [Zhang et al., Phys. Rev. E, 69, 032602, 2004]. Simulation results showed that the Cassie law was valid when the heterogeneous patterns were smaller than or of the same order to the liquid-vapor interface thickness. A droplet would move spontaneously if it experienced unbalanced Young forces on a heterogeneous surface. Such self-movements were similar to previous experimental observations. Our simulations also showed more potential of the lattice Boltzmann method in future interfacial studies.
液体润湿性和微液滴在非均质固体表面上的自运动
在本文中,我们采用最近提出的平均场自由能晶格玻尔兹曼方法研究了非均质表面上的接触角行为[Zhang et al., Phys.]。[j].电子工程学报,2004,32(2):481 - 481。仿真结果表明,当非均质模式小于液-气界面厚度或与液-气界面厚度的量级相同时,Cassie定律是有效的。如果液滴在非均匀表面上受到不平衡的杨氏力,它就会自发地运动。这种自我运动与之前的实验观察结果相似。我们的模拟也显示了晶格玻尔兹曼方法在未来界面研究中的更大潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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