在超疏水的合体上跳跃的毛细管波驱动滴
Till Pfeiffer1, Jakob Sterz1, Luca Pekari1
1Institute for Technical Thermodynamics, Technical University of Darmstadt, Darmstadt 64287, Germany.
ACS applied materials & interfaces
|September 2, 2025
概括
研究人员发现了一种新的滴滴跳跃现象, 这种情况发生时, 由滴体凝聚而产生的毛细血管波将邻近的滴体推出.
科学领域:
- 流体动力学
- 表面科学
- 微观的现象
背景情况:
- 滴滴跳跃是一种已知的现象,具有几个已确定的机制,包括凝聚引起的,蒸发引起的和部分受约束的滴滴跳跃.
- 对微流体,传热和防技术的应用来说,了解表面的液滴动态至关重要.
研究的目的:
- 介绍和描述一个涉及多个微滴的新滴跳现象.
- 为了阐明底层的物理机制驱使微滴从超水同时跳跃.
- 开发一个预测滴滴发射区域的模型.
主要方法:
- 在超疏水的体上实验观察微滴的行为.
- 通过凝聚与底层水源的触发液滴跳跃.
- 对毛细血管波传播及其对滴滴发射的影响的分析.
- 推导一个简单的理论模型来估计滴滴发射面积.
主要成果:
- 发现了一种新现象,即多个微滴同时从超性体中跳出来.
- 这种跳跃是由微滴与底层水的凝聚引起的,
- 这种毛细血管波传播,扰乱,并发射相邻的微滴.
- 开发了一个模型来估计滴滴发射区域的大小.
结论:
- 这项研究揭示了一种通过毛细血管波转移能量驱动的滴滴发射的新机制.
- 燃烧水滴可以为柔性或漂浮的基板提供有用的工作,推进邻近的水滴.
- 这一发现对控制微滴行为和开发新型推进方法有意义.
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