超性的近静态和动态分解
Yilian Xiao1, Baixue Li2, Chuanqi Wei2
1Department of Mechanical Engineering (Robotics), Guangdong Technion - Israel Institute of Technology, Shantou, Guangdong 515063, China.
Journal of colloid and interface science
|May 13, 2025
概括
当液体穿透微观结构时,超疏水表面失去功能. 这项研究量化了液体透动态和压力,揭示了分解的标准,并使表面强度的预测模型成为可能.
科学领域:
- 表面科学是一门科学.
- 材料科学是一种材料科学.
- 流体动力学 流体动力学
背景情况:
- 超疏水表面提供了独特的功能,但由于液体透到微观结构中,它们的性能下降.
- 了解各种压力下超性分解的机制,对于设计坚固的表面至关重要.
研究的目的:
- 通过同时测量微观液体透率和施加压力,建立超性分解的统一标准.
- 研究不同微观结构 (支柱和空洞支柱) 的表面液体透的动态.
主要方法:
- 通过透明基板直接可视化微观液体透动态.
- 对准静态透的临界水静压的测量.
- 测量动态透的临界滴滴撞击速度.
主要成果:
- 毛细管压力抵抗透取决于毛细管和空隙压力之间的力量平衡.
- 一种水式压力模型解释了由于冲击波造成的额外动态透压力.
- 基于表面几何学的临界滴滴撞击速度的预测模型被开发并经过实验验证.
结论:
- 与普通柱相比,空洞柱显示出较强的抗液体透性,这是由于减少了液体减速.
- 开发的模型提供了一个框架,用于预测和增强超表面对液体冲击的强度.
相关概念视频
Surface Tension, Capillary Action, and Viscosity
27.3K
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...
27.3K
Solubility
17.1K
Solution, Solubility, and Solubility Equilibrium
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules,...
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules,...
17.1K
Surface Tension of Fluid
188
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...
188
Cohesion
50.3K
Cohesion is the attraction between molecules of the same type, such as water molecules. Water molecules have an overall neutral charge but are polar molecule. An oxygen atom in one water molecule has a partial negative charge that can bind to a hydrogen atom with a partial positive charge in a second water molecule, forming a hydrogen bond. Each water molecule can form up to four hydrogen bonds with other water molecules. Hydrogen bonds are responsible for water's cohesive nature.
On a...
On a...
50.3K


