表面活性剂介导的薄滴的调制,在软基板上传播
Anubhav Jain1, Shreyank Goel1, Dipin S Pillai1
1NICE Group, Department of Chemical Engineering, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India.
Langmuir : the ACS journal of surfaces and colloids
|January 8, 2026
概括
表面活性剂可以减缓滴滴在软基板上的传播,以获得完美的湿,但通过减少粘弹性制动来增强部分湿. 这影响了生物系统和技术中的流体动力学.
科学领域:
- 流体动力学和软物质物理学
背景情况:
- 滴滴在软粘弹性基板上传播对于生物系统,涂料和电子设备至关重要.
- 了解表面活性剂对液滴动态的影响是控制这些应用的关键.
研究的目的:
- 模拟和分析表面活性剂载荷滴在软粘性弹性基板上的传播行为.
- 调查马兰戈尼和佩克莱数对传播动态的影响.
主要方法:
- 利用滑理论来开发一个减少顺序模型.
- 衍生结合的非线性时空进化方程用于接口跟踪.
- 对马兰戈尼号和佩克莱号进行了参数调查.
主要成果:
- 对于完美的湿,表面活性剂由于对立的马兰戈尼应力而减少扩散.
- 增加的Péclet数减少了扩散率和范围.
- 对于部分湿,较高的马兰戈尼数量通过降低接触角度和减少粘弹性制动来增强扩散.
结论:
- 表面活性剂驱动的降低粘弹性制动是部分湿场景中增强扩散的主要机制.
- 这些发现与最近对表面活性剂增强在软基板上的扩散的实验观测一致.
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