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在滑滑的油接种表面上调接触线动态,用于性滴水蒸发

Astrid Raynard¹, Anam Abbas^2,3, Steven Armstrong¹

¹Institute for Multiscale Thermofluids, School of Engineering, The University of Edinburgh, Edinburgh, EH9 3FD, Scotland, UK.

Scientific reports

|January 19, 2024

概括

控制滴水蒸发是工业的关键. 这项研究表明,在表面上接种油调整了蒸发模式和持续时间,为自清洁表面等应用提供了简单,可扩展的控制.

科学领域:

表面科学是一门学科.
流体动力学流体动力学
材料科学材料科学材料科学

背景情况:

滴滴蒸发控制对于基础和工业应用至关重要.
现有的控制滴水蒸发动态的方法往往涉及复杂的表面修改.
在光滑表面的三个主要蒸发模式是恒定接触半径 (CCR),恒定接触角 (CCA) 和混合模式.

研究的目的:

通过使用油接种来研究液滴蒸发动态的控制.
探索油接种的不同制造参数如何影响表面特性和蒸发模式.
通过操纵接触线固定和蒸发行为,提供控制滴水表面相互作用的指导方针.

主要方法:

在具有不同制造参数 (粘度,体积,沉积方法,层) 的表面上植入油.
描述表面特性,包括接触角度 (CA) 和接触角度歇斯底里 (CAH).
观察和分析修改表面上的滴水蒸发动态和模式.

主要成果:

油接种将水友性表面转化为疏水性表面 (CA ≈ 108°) 与可调 CAH (1°20°).
制造参数直接影响CAH,从而影响不同蒸发模式的持续时间.
该程序允许在蒸发过程中控制接触线钉定和滑行为.

结论:

简单而可扩展的油接种可以有效地控制滴水蒸发动态.
这些修改后的表面具有类似于SLIPS,QLS和SOCAL表面的功能,可实现无固定交互.
潜在的应用包括自清洁表面和均颗粒沉积.

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