Surfactant-driven dynamics of liquid lenses
Surfactant-driven dynamics of liquid lenses
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DOI：
10.1063/1.3670009
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发表时间：
2011-12-01
影响因子：
4.6
通讯作者：
Matar, Omar K.
中科院分区：
文献类型：
--
作者：
Karapetsas, George;Craster, Richard V.;Matar, Omar K.
在表面活性剂引起的Marangoni应力的存在下，在流体层上展开的无座液体透镜显示出令人惊讶的广泛的有趣行为，范围从透镜的完全展开，到展开后收缩，到持续的脉动振荡。模型的传播过程中，表面活性剂在移动接触线，吸附动力学以上和以下的临界胶束浓度的影响，都纳入建模。数值结果揭示了驱动这些现象的物理过程，并且透镜的规则振荡跳动被证明在特定范围内发生。(C)2011年美国物理学会。[doi：10.1063/1.3670009]
Sessile liquid lenses spreading over a fluid layer, in the presence of Marangoni stresses due to surfactants, show a surprisingly wide range of interesting behaviour ranging from complete spreading of the lens, to spreading followed by retraction, to sustained pulsating oscillations. Models for the spreading process, the effects of surfactant at the moving contact line, sorption kinetics above and below the critical micelle concentration, are all incorporated into the modelling. Numerical results cast light upon the physical processes that drive these phenomena, and the regular oscillatory beating of lenses is shown to occur in specific limits. (C) 2011 American Institute of Physics. [doi:10.1063/1.3670009]