润湿
振荡(细胞信号)
粘度
缩放比例
机械
毛细管数
毛细管作用
材料科学
毛细管波
表面张力
化学
化学物理
热力学
物理
复合材料
几何学
生物化学
数学
作者
Shiji Lin,Binyu Zhao,Song Zou,Jingxia Guo,Wei Zheng,Longquan Chen
标识
DOI:10.1016/j.jcis.2017.12.086
摘要
In this paper, we experimentally investigated the impact dynamics of different viscous droplets on solid surfaces with diverse wettabilities. We show that the outcome of an impinging droplet is dependent on the physical property of the droplet and the wettability of the surface. Whereas only deposition was observed on lyophilic surfaces, more impact phenomena were identified on lyophobic and superlyophobic surfaces. It was found that none of the existing theoretical models can well describe the maximum spreading factor, revealing the complexity of the droplet impact dynamics and suggesting that more factors need to be considered in the theory. By using the modified capillary-inertial time, which considers the effects of liquid viscosity and surface wettability on droplet spreading, a universal scaling law describing the spreading time was obtained. Finally, we analyzed the post-impact droplet oscillation with the theory for damped harmonic oscillators and interpreted the effects of liquid viscosity and surface wettability on the oscillation by simple scaling analyses.
科研通智能强力驱动
Strongly Powered by AbleSci AI