分子模拟研究用等级柱构成纹理的表面的湿度
Kiduk Kim1, Seyong Choi1, Zhengqing Zhang2
1Department of Nanoenergy Engineering, Pusan National University, Busan 46241, Republic of Korea.
Molecules (Basel, Switzerland)
|June 10, 2023
概括
层次的表面纹理与高高的,密集的柱子增强疏水性. 这增加了水滴湿过渡的能量屏障,导致接触角度显著增加.
科学领域:
- 表面科学和纳米技术
- 计算物理和化学 计算物理和化学
背景情况:
- 表面的湿透性对于各种应用至关重要.
- 控制表面特性需要了解湿现象.
- 层次结构为表面工程提供了独特的可能性.
研究的目的:
- 调查等级柱面的湿透性.
- 分析卡西-巴克斯特 (CB) 到温泽尔 (WZ) 的湿过渡.
- 确定柱子尺寸对疏水性的影响.
主要方法:
- 使用了分子动力学模拟.
- 小柱高度和间距的系统变化.
- 分子结构和自由能量景观的分析.
主要成果:
- 层次纹理显著提高了表面的疏水性.
- 高高的,密集的小柱子增加了CB到WZ过渡的激活能量.
- 水滴在这些工程表面上表现出更大的接触角度.
结论:
- 层次柱设计是对超疏水表面的有效策略.
- 了解过渡状态是控制湿度的关键.
- 柱体几何直接影响表面能量和湿行为.
相关概念视频
02:57Surface Tension, Capillary Action, and Viscosity
28.1K
Surface Tension
The various IMFs between identical molecules of a substance are examples of cohesive forces. The molecules within a liquid are surrounded by other molecules and are attracted equally in all directions by the cohesive forces within the liquid. However, the molecules on the surface of a liquid are attracted only by about one-half as many molecules. Because of the unbalanced molecular attractions on the surface molecules, liquids contract to form a shape that minimizes the number...
The various IMFs between identical molecules of a substance are examples of cohesive forces. The molecules within a liquid are surrounded by other molecules and are attracted equally in all directions by the cohesive forces within the liquid. However, the molecules on the surface of a liquid are attracted only by about one-half as many molecules. Because of the unbalanced molecular attractions on the surface molecules, liquids contract to form a shape that minimizes the number...
28.1K
01:23Surface Appendages of Archaea
49
Archaeal surface appendages are highly specialized structures essential for environmental adaptation, encompassing roles in adhesion, biofilm formation, and motility. Among these appendages, pili and archaella stand out for their distinct morphologies and functionalities, enabling archaea to thrive in diverse and often extreme environments.Pili: Adhesion and Biofilm FormationPili are filamentous structures assembled from pilin protein subunits, primarily contributing to adhesion and biofilm...
49