表面纳米泡在粗的水友钢上形成核,呈现出取决于地形的形状
Zibo Ren1, Zhigang Zuo1, Knud Aage Mørch2
1State Key Laboratory of Hydro Science and Engineering, and Department of Energy and Power Engineering, Tsinghua University, Beijing, 100084, China.
Journal of colloid and interface science
|September 9, 2025
概括
由于地形和污染,表面纳米泡在干净的表面和工程表面上形成的不同. 这会影响液体-固体系统的拉力强度,以及表面在水和空气中如何出现.
科学领域:
- 表面科学是一门科学.
- 纳米技术 纳米技术
- 流体动力学 流体动力学
背景情况:
- 平面纳米泡,附着角度为~15°,在纯水中的高度清洁的表面上形成.
- 这些纳米泡在普通水中的工程表面上没有观察到,在那里存在化核,导致拉伸强度低.
研究的目的:
- 调查基质地形如何影响表面纳米泡的形状和附着角度.
- 了解污染和溶解气体在工程表面纳米泡形成和脱落中的作用.
主要方法:
- 使用标准实验技术在抛光钢表面上产生表面纳米泡.
- 分析局部基质地形对纳米泡形状和附着角度的影响.
- 将观察结果与非吸附液体区域理论进行比较.
主要成果:
- 纳米泡的形状和附着角度受当地基质地形的影响.
- 在工程表面上,广泛的污染缺乏边缘,溶解的气体支持从形结构中脱离.
- 由于纳米泡脱落模式,水中的表面外观与空气不同,这取决于表面特性,污染和气体和.
结论:
- 表面纳米泡由污染皮肤在边缘 (~14.5°接触角度) 结合来解释,以反映与结合的水分子.
- 皮肤结构的曲曲曲键,导致基于表面地形学的固体-液体接触角度的偏差.
- 工程表面上的纳米泡脱落模式对于液体-固体系统的抗拉强度至关重要.
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