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相关概念视频

Masking and Demasking Agents01:19

Masking and Demasking Agents

EDTA titrations may necessitate masking and demasking agents to temporarily protect a particular metal ion in a mixture from the EDTA reaction. These agents facilitate the sequential analysis of the metal ions by forming stable complexes with some—but not all—metal ions during certain steps.
There are many masking agents, such as cyanide, fluoride, triethanolamine, thiourea, and 2,3-bis(sulfanyl)propan-1-ol (formerly 2,3-dimercapto-1-propanol), with the masking agent chosen based on the metal...
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Topography involves measuring and mapping land elevations, natural features, and artificial structures to create accurate representations of the terrain. Topographic surveying relies on traditional and modern methods, each with distinct advantages and limitations.Traditional Surveying Methods:Transit stadia surveys and plane table surveys were widely used traditional surveying methods. These techniques relied on instruments like theodolites and stadia rods for measuring distances and angles,...

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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
PubMed
概括
此摘要是机器生成的。

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.

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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.