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Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...
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Total internal reflection fluorescence microscopy or TIRF is an advanced microscopic technique used to visualize fluorophores in samples close to a solid surface with a higher refractive index, such as a glass coverslip. TIRF only allows fluorophores in proximity to the solid surface to be excited. When light from a medium with a lower refractive index (such as air) hits the glass coverslip at a critical angle, the light undergoes total internal reflection stead of passing through the glass.
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使用平面激光诱导光的包装层的可视化和实验性表征.

Haobo Xu1, Joshua M Herzog1, Yimin Zhou1

  • 1Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan 48105, United States.

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概括

油浸表面的滑剂耗尽是由于水滴上的油包装层引起的. 矿物油避免了这种包装层,为在纳米纹理表面中保持滑剂提供了一个解决方案.

关键词:
用滑剂浸的表面 (LIS)在油浸透的表面上.平面激光诱导的光 (PLIF)滑动的液体注入多孔表面 (SLIPS)扩散系数的扩散系数湿的山脊 湿的山脊包装层是一个包装层.

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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:

  • 纳米纹理油浸透表面表现出超低的滴滴粘附度和高流动性.
  • 应用包括增强凝结,减少阻力和抗生物污染,但滑剂耗尽是一个关键的工业问题.

研究的目的:

  • 调查油浸表面的滑剂耗尽的来源.
  • 想象并量化围绕滴滴的油层 (包装层).
  • 确定减轻滑油损失的策略.

主要方法:

  • 平面激光诱导光 (PLIF) 用于可视化和测量油包裹层厚度.
  • 在纳米纹理表面上对油和矿物油行为进行实验分析.
  • 缩放分析平衡毛细血管和范德瓦尔斯力.

主要成果:

  • 由于界面力不平衡,油在水滴上形成了一个不均的包装层.
  • 油包装层的平均厚度约为50 ± 10nm.
  • 在类似的条件下,矿物油不会在水滴上形成包装层.

结论:

  • 油的包装层是滑油耗尽的主要原因之一.
  • 矿物油缺乏包装层的形成,这是一种可行的策略,可以增强滑剂的保留.
  • 这些发现有助于理解和量化滑剂耗尽,以改善凝结和收集水的技术.