论文标题
部分润湿的界面结构的长期演变
Long-time Evolution of Interfacial Structure of Partial Wetting
论文作者
论文摘要
当从部分润湿液体中撤出实心板时，液体层将露出移动的底物。高速成像显示在稳态处的横向方向上夹带层的交替薄区域。本文系统地将这种情况与反向过程进行了比较，强迫润湿，当固体被推入液体时，固体将沿其表面的空气层夹住。为了量化这些稳态结构的绝对厚度，我已经开发了一种光学技术，利用了干扰角度依赖性，并结合了基于最大似然估计的方法。数据表明，膜尺度的两个区域的厚度都带有毛细管数，大约。此外，在发作期间观察到一个新区域，该区域与以前模型预测的行为不同。
When a solid plate is withdrawn from a partially wetting liquid, a liquid layer dewets the moving substrate. High-speed imaging reveals alternating thin and thick regions in the entrained layer in the transverse direction at steady state. This paper systematically compares this situation to the reversed process, forced wetting, where a solid entrains an air layer along its surface as it is pushed into a liquid. To quantify the absolute thickness of these steady-state structures precisely, I have developed an optical technique, taking advantage of the angle dependence of interference, combined with a method based on a maximum likelihood estimation. The data show that the thicknesses of both regions of the film scale with the capillary number, Ca. In addition, a new region is observed during onset which differs from the behavior predicted by previous models.
