论文标题
理论分析，用于化学图案表面上动态接触角滞后滞后
Theoretical analysis for dynamic contact angle hysteresis on chemically patterned surfaces
论文作者
论文摘要
研究了一个动态润湿问题，用于在流体中插入的薄纤维和化学不均匀的表面。通过使用OnSager原理作为近似工具，将降低的模型用于接触角滞后。该模型很简单，并捕获了接触角的基本动力学。从该模型中，我们得出了前进的接触角和后退角度的下限的上限，该界限通过数值模拟验证。结果与准静态结果一致。该模型还可以用来理解前进和向后接触角对纤维速度的不对称依赖性，这在Guan等人的物理实验中可以观察到。莱特牧师。 2016。
A dynamic wetting problem is studied for a moving thin fiber inserted in fluid and with a chemically inhomogeneous surface. A reduced model is derived for contact angle hysteresis by using the Onsager principle as an approximation tool. The model is simple and captures the essential dynamics of the contact angle. From this model we derive an upper bound of the advancing contact angle and a lower bound of the receding angle, which are verified by numerical simulations. The results are consistent with the quasi-static results. The model can also be used to understand the asymmetric dependence of the advancing and receding contact angles on the fiber velocity, which is observed recently in physical experiments reported in Guan et al Phys. Rev. Lett. 2016.
