锯齿波
毛细管作用
润湿
不对称
磁滞
机械
微流控
鼻涕虫
化学
管(容器)
接触角
工作(物理)
毛细管数
材料科学
纳米技术
复合材料
热力学
物理
凝聚态物理
地质学
古生物学
量子力学
计算机科学
计算机视觉
出处
期刊:Langmuir
[American Chemical Society]
日期:2007-01-05
卷期号:23 (4): 1867-1871
被引量:70
摘要
On surfaces with asymmetric "sawtooth" features, liquid slugs or drops tend to move preferentially in one direction. In this theoretical study, the imbalance of capillary forces that leads to directionally biased wetting is examined. Capillary tubes with symmetric and asymmetric sawtooth features were used to estimate the ratios of retention forces in opposing directions. Our analysis suggests that the difference between the retention force in one direction versus the other can be maximized by increasing feature asymmetry and minimizing inherent hysteresis of the materials of construction. This work has implications for small channels or surfaces of fluid-handling components found in microfluidic devices and fuel cells.
科研通智能强力驱动
Strongly Powered by AbleSci AI