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相关概念视频

Surface Tension and Surface Energy01:16

Surface Tension and Surface Energy

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When a paint brush is immersed in water, the bristles wave freely inside the water. When it is taken out, the bristles stick together. The reason behind this effect is surface tension.
Consider a beaker filled with liquid. The bulk molecules in the liquid experience equal attractive forces on all sides with the surrounding molecules. However, the surface molecules experience a net attractive force downward due to the bulk molecules. The surface of the liquid behaves like a stretched membrane,...
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相关实验视频

Updated: Jul 25, 2025

Determining the Ice-binding Planes of Antifreeze Proteins by Fluorescence-based Ice Plane Affinity
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使用分子模拟和增强型采样来描述表面冰融度.

Sean M Marks1, Zachariah Vicars1, Aniket U Thosar1

  • 1Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States.

The journal of physical chemistry. B
|June 28, 2023
PubMed
概括
此摘要是机器生成的。

了解表面如何吸引冰 (冰性) 是冷保存等应用的关键. 这项研究表明,与冰网相匹配的极地表面强烈吸引冰,而不匹配的表面表现出很少的冰性.

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Fabrication of Superhydrophobic Metal Surfaces for Anti-Icing Applications
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科学领域:

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

背景情况:

  • 冰的形成在许多科学领域至关重要,包括大气科学和冷保存.
  • 固体表面通过改变核化障碍来显著影响冰的形成动力学.
  • 决定表面冰性能的分子特性仍未完全被理解.

研究的目的:

  • 开发一种计算效率高的方法来量化表面的冰性.
  • 调查格子匹配和表面极性在冰性中的作用.
  • 为预测和设计冰友表面提供一个框架.

主要方法:

  • 利用分子模拟与增强的采样技术相结合.
  • 量化了与增加的表面冰接触相比与表面水接触相关的自由能量变化.
  • 描述了具有不同极性和格子对冰的互补性的模型表面.

主要成果:

  • 极地表面的格子与冰相匹配,呈现出高冰性.
  • 具有格子匹配的非极地表面显示出中度的冰恐.
  • 对于缺乏格子互补性的表面,冰性是独立于极性,两种类型都适度恐冰.

结论:

  • 表面冰格的匹配是决定冰性的一个主要因素.
  • 表面极性只有在有网格匹配时,才能显著增强冰性.
  • 开发的方法提供了一种定量方法来描述和理解表面冰的相互作用.