液体在倾斜微柱上单向扩散的模拟
Modelling unidirectional liquid spreading on slanted microposts
摘要：
采用格子玻尔兹曼算法模拟了液滴在倾斜微柱图案化表面上的缓慢扩散。在柱的侧面或顶部上的界面的Gibb钉扎导致在柱的宽范围的接触角和倾斜角上的单向扩展。在没有，一个或两个方向的传播制度被确定，并显示出同意以及在朱，肖和王（自然材料，9，413）提出的二维理论。接触线形状的更详细的数值分析，使我们能够了解偏离二维模型，并确定形状的钉扎接口。
英文摘要：
A lattice Boltzmann algorithm is used to simulate the slow spreading of drops on a surface patterned with slanted micro-posts. Gibb's pinning of the interface on the sides or top of the posts leads to unidirectional spreading over a wide range of contact angles and inclination angles of the posts. Regimes for spreading in no, one or two directions are identified, and shown to agree well with a two-dimensional theory proposed in Chu, Xiao and Wang (Nature Materials, 9, 413). A more detailed numerical analysis of the contact line shapes allows us to understand deviations from the two dimensional model, and to identify the shapes of the pinned interfaces.
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