Coarsening dynamics of slipping droplets
Coarsening dynamics of slipping droplets
复制标题
滑移液滴的粗化动力学
DOI：
10.1007/s10665-009-9313-z
复制
发表时间：
2010
影响因子：
1.3
通讯作者：
B. Wagner
中科院分区：
文献类型：
--
作者：
G. Kitavtsev;B. Wagner
研究了疏水化基底上纳米级聚合物薄膜的后期去湿过程，该过程使用了最近导出的一些考虑聚合物-基底界面处大滑移的润滑模型。该过程的后期阶段的特征是破裂后剩余的液滴阵列的缓慢粗化动力学和初始去湿阶段。对于这种情况，一个减少系统的常微分方程来自大滑移润滑模型使用渐近分析。这扩展了无滑移情况下的已知结果。在简化模型的基础上，分析了滑移作为液滴迁移控制参数的作用，并确定了粗化过程的几个新的定性效应。
The late-phase dewetting process of nanoscopic thin polymer films on hydrophobized substrates using some recently derived lubrication models that take account of large slippage at the polymer-substrate interface is studied. The late phase of this process is characterized by the slow-time coarsening dynamics of arrays of droplets that remain after rupture and the initial dewetting phases. For this situation a reduced system of ordinary differential equations is derived from the lubrication model for large slippage using asymptotic analysis. This extends known results for the no-slip case. On the basis of the reduced model, the role of the slippage as a control parameter for droplet migration is analysed and several new qualitative effects for the coarsening process are identified.