液滴在水平滑动表面上自排水,用于实时反/解冰
Xiao Han1,2, Xu Sun1, Di Zhao1
1State Key Laboratory of Bioinspired Interfacial Materials Science, School of Chemistry, Beihang University, Beijing, 100191, People's Republic of China.
Nano-micro letters
|September 9, 2025
概括
研究人员开发了一种自排水的滑动表面 (SDSS),它利用阳光来防止基础设施上积冰. 这种创新的表面会排斥冷的水滴,确保即使在极度寒冷的情况下,也能实时防冰.
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:
- 冰在基础设施上的积累会造成严重的经济损失和安全隐患.
- 现有的光热防冰表面在光线减少后,难以重新结融水.
研究的目的:
- 开发一种自排水的滑动表面 (SDSS) 用于使用阳光实时防冰.
- 克服当前防冰技术在防止再结方面的局限性.
主要方法:
- 通过在滑滑的表面和光热薄膜之间粘合一层火电层来制造SDSS.
- 在阳光下利用协同光热和火电效应 (100 mW cm−2).
- 在低温 (-20.0 ± 1.0 °C) 下研究表面温度维持和电荷生成.
主要成果:
- SDSS 保持了 19.8 ± 2.2 °C 的表面温度,在 -20.0 ± 1.0 °C 保持.
- 表面通过热电合产生静电电荷,积极排斥水滴.
- 融化冰在 -20.0 ± 1.0 °C的阳光照射后10分钟内有效排水,留下干净的表面.
结论:
- 开发的SDSS提供了一种有效的解决方案,用于在寒冷环境中实时防冰.
- 协同的光热和火电效应使融水能够自行去除,并防止重新结.
- 这项技术为基础设施和运输系统的防冰应用提供了一个有前途的新方法.
相关概念视频
01:22Surface Tension of Fluid
1.3K
Surface tension is a fundamental property of fluids, occurring at the boundary between a liquid and a gas or between two immiscible liquids. This phenomenon arises from the cohesive forces between molecules at the fluid's surface, creating an effect similar to a stretched elastic membrane. Inside each fluid, molecules are equally attracted in all directions by neighboring molecules, but surface molecules experience a net inward force, resulting in surface tension.
Surface tension varies...
Surface tension varies...
1.3K
01:04Hydrostatic Pressure Force on a Plane Surface
1.3K
When a plane surface is submerged in a fluid, hydrostatic forces develop on the surface due to the fluid's pressure. For horizontal surfaces, the pressure exerted by the fluid is uniform because the depth remains constant. The resultant force is determined by the pressure at the given depth multiplied by the area of the surface, and it acts through the centroid of the surface. For vertical surfaces, the pressure varies with depth, increasing as the distance from the fluid's free surface...
1.3K