面具启用在表面上的地形对比度
Trevor J Shimokusu1,2, Hemish Thakkar1, Anam Abbas3
1Department of Mechanical Engineering, Rice University, Houston, Texas 77005, United States.
Langmuir : the ACS journal of surfaces and colloids
|December 16, 2024
概括
研究人员开发了一种可扩展的方法,使用刀片切割的口罩来创建有图案的表面,可调节的湿透性和排放性,用于增强液体运输和热管理应用.
科学领域:
- 材料科学 材料科学 材料科学
- 表面工程是什么?表面工程是什么?
- 纳米技术 纳米技术
背景情况:
- 带有湿度对比的有图案的表面对于电子产品热管理,自洁和防冰等先进的液体运输至关重要.
- (Al) 表面在热应用中广泛使用,但在Al上创建地形图案湿度对比度的方法是有限的.
研究的目的:
- 展示一种简单且可扩展的方法,使用刀片切割掩饰在表面上创建地形图案湿度对比.
- 量化地形图案分辨率的准确性,表面粗性,可湿性和有图案的Al表面的热发射率.
主要方法:
- 使用刀片切割的乙烯基面膜模板和商用漆树脂作为蚀刻阻.
- 采用蚀刻工艺,在表面上创建地形对比.
- 使用接触角光度测量和使用红外热谱的热发射率来表征湿度.
主要成果:
- 达到的湿度对比度从<5°到80° (刻与光滑) 和150°到120° (刻与光滑与疏水涂层).
- 在凝结过程中,在条纹图案表面的超疏水区域上,证明了增强的滴滴流失.
- 绘制地形介导的热发射率对比度,蚀刻区域在 ε ≈ 0.65 和光滑区域在 ε ≈ 0.26.
结论:
- 刀片切割掩盖方法提供了一个可扩展的途径,以制造复杂的地形图案表面,可控制湿透性和排放性.
- 这些有图案的表面显示出在蒸汽室热整流,辐射冷却和高温相变过程中的应用潜力.
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