空气泡和米卡表面之间的薄液膜排水,具有可湿度对比度
1State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
Langmuir : the ACS journal of surfaces and colloids
|September 15, 2025
概括
泡和具有湿度对比度的表面之间的液体薄膜排水是轴对称的,正如斯托克斯-雷诺兹--拉普拉斯 (SRYL) 模型所描述的那样. 然后,由于表面张力,气泡会向疏水区移动.
科学领域:
- 流体动力学 流体动力学
- 表面科学是一门科学.
- 体和接口科学科学
背景情况:
- 湿度对比面在自然界中普遍存在,对于涉及泡表面相互作用的工业应用至关重要.
- 了解泡表面动态是优化漂浮和涂层等流程的关键.
研究的目的:
- 为了研究薄膜液体排水和气泡与水浸的面之间的破裂动态,呈现出湿透的对比度.
- 评估Stokes-Reynolds-Young-Laplace (SRYL) 模型对这些系统的适用性.
主要方法:
- 在空气泡和光表面之间的薄液膜排水的特征与受控的湿透性对比于水.
- 应用和验证Stokes-Reynolds-Young-Laplace (SRYL) 模型来描述排水动态.
主要成果:
- 发现液膜排水过程是轴对称的,尽管湿度对比表面的不对称性.
- 斯托克斯-雷诺德斯--拉普拉斯 (SRYL) 模型准确地捕捉了排水动态,将其实用性扩展到具有湿度对比的表面.
- 不对称的膜破裂发生在排水后,由可湿度对比驱动.
- 一个不平衡的表面张力,由湿度对比引起,当摩擦被克服时,驱动泡向更疏水的表面区域迁移.
结论:
- SRYL模型是一个强大的工具,用于分析在光滑表面上的液体薄膜排水,具有湿透性对比度.
- 湿度对比显著影响泡表面相互作用,导致不对称的破裂和定向的泡运动.
- 这些发现提供了对异质表面泡行为的洞察,与各种界面现象和工业过程有关.
相关概念视频
01:22Surface Tension of Fluid
1.4K
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...
1.4K
02:57Surface Tension, Capillary Action, and Viscosity
32.8K
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...
32.8K
01:34The Fluid Mosaic Model
177.2K
The fluid mosaic model was first proposed as a visual representation of research observations. The model comprises the composition and dynamics of membranes and serves as a foundation for future membrane-related studies. The model depicts the structure of the plasma membrane with a variety of components, which include phospholipids, proteins, and carbohydrates. These integral molecules are loosely bound, defining the cell’s border and providing fluidity for optimal function.
177.2K
01:19Capillarity in Fluid
829
Capillarity describes the movement of liquid in small spaces without external forces acting on it. The capillarity is driven by surface tension and adhesive interactions between the liquid and surrounding solid surfaces. This effect is often seen in narrow tubes, porous materials, and fine particles.
Surface tension is crucial to capillarity. It results from cohesive forces between liquid molecules at the liquid-air boundary, forming a skin that resists external forces. When the capillary tube...
Surface tension is crucial to capillarity. It results from cohesive forces between liquid molecules at the liquid-air boundary, forming a skin that resists external forces. When the capillary tube...
829
01:13Contact Angle
18.2K
When a solid is dipped inside a liquid, the liquid surface becomes curved near the contact. For some solid–liquid interfaces, the liquid is pulled up along the solid, while for others, the liquid surface is convex or depressed near the solid surface. This phenomenon can be explained using the concept of cohesive and adhesive forces.
The adhesive force is the molecular force between molecules of different materials, that is, between the molecules of the solid and the liquid. The cohesive...
The adhesive force is the molecular force between molecules of different materials, that is, between the molecules of the solid and the liquid. The cohesive...
18.2K
01:13Excess Pressure Inside a Drop and a Bubble
3.3K
The shape of a small drop of liquid can be considered spherical, neglecting the effect of gravity. This drop can further be considered as two equal hemispherical drops put together due to surface tension. The forces acting on the spherical drop are due to the pressure of the liquid inside the drop, the pressure due to air outside the drop, and the force due to the surface tension acting on the two hemispherical drops.
3.3K