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相关概念视频

Excess Pressure Inside a Drop and a Bubble01:13

Excess Pressure Inside a Drop and a Bubble

2.2K
The shape of a small drop of liquid can be considered spherical, neglecting the effect of gravity. This drop can further be considered as two equal hemispherical drops put together due to surface tension. The forces acting on the spherical drop are due to the pressure of the liquid inside the drop, the pressure due to air outside the drop, and the force due to the surface tension acting on the two hemispherical drops.
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Electrostatic Boundary Conditions in Dielectrics01:27

Electrostatic Boundary Conditions in Dielectrics

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When an electric field passes from one homogeneous medium to another, crossing the boundary between the two mediums imparts a discontinuity in the electric field. This results in electrostatic boundary conditions that depend on the type of mediums the field propagates through.
Consider a case where both the mediums across a boundary are two different dielectric materials. Recall that the electric field and electric displacement are proportional and related through the material's...
1.4K

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相关实验视频

Updated: Sep 16, 2025

A Microfluidic System with Surface Patterning for Investigating Cavitation Bubble(s)&#8211;Cell Interaction and the Resultant Bioeffects at the Single-cell Level
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A Microfluidic System with Surface Patterning for Investigating Cavitation Bubble(s)–Cell Interaction and the Resultant Bioeffects at the Single-cell Level

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电极粗度调节的接触线动力学决定了泡脱落的大小.

Weikang Yang1, Dongxu Gu2, Xin Liu1

  • 1School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, PR China. wkyang@stu.cqu.edu.cn.

Chemical communications (Cambridge, England)
|July 10, 2025
PubMed
概括

提高水电解效率依赖于泡分离. 这项研究揭示了表面粗度通过影响滑动和滚动湿模式来控制电极上的气泡脱落大小.

科学领域:

  • 电化学 电化学 电化学
  • 表面科学是一门学科.
  • 材料科学 材料科学 材料科学

背景情况:

  • 通过水电解有效地生产是可再生能源的关键.
  • 电极表面的气泡脱离动力学显著影响整体工艺效率.
  • 了解泡电极相互作用是优化电解器性能的关键.

研究的目的:

  • 在水电解过程中研究电极上的气泡接触线的动力学.
  • 为了识别和描述不同的泡湿模式.
  • 为了确定表面特性对泡脱落的影响.

主要方法:

  • 使用高速成像技术捕捉泡脱落事件.
  • 在电极表面分析了气泡接触线的行为.
  • 与观察到的湿模式相关的表面粗性特征.

主要成果:

  • 确定了两个主要的气泡湿模式:滑动和滚动.
  • 证明表面粗度是影响泡脱落大小的关键因素.
  • 展示了表面粗度如何介导滑动和滚动模式之间的平衡.

结论:

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Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System
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Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System

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Electrochemical Roughening of Thin-Film Platinum Macro and Microelectrodes
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  • 水电解中的气泡脱落大小可以通过表面工程来控制.
  • 表面粗度在控制电极上的气泡动力学方面发挥着关键作用.
  • 优化表面粗度可以提高泡脱落,从而提高水电解效率.