相关实验视频
Updated: Feb 11, 2026
08:34
Visualization of High Speed Liquid Jet Impaction on a Moving Surface
Published on: April 17, 2015
12.0K
通过冲击驱动的液体液体封装创建可调节的低表面张力液体囊
Tian-Yu Zhang1, Arnav Banerjee1, Sushanta K Mitra1
1Micro & Nano-scale Transport Laboratory, Waterloo Institute for Nanotechnology, Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada.
Langmuir : the ACS journal of surfaces and colloids
|February 10, 2026
概括
这项研究推进了低表面张力滴滴的冲击驱动液体-液体封装 (LLE). 研究人员实现了水滴的可靠封装,表面张力低至16mN/m,确定了控制的关键参数.
科学领域:
- 材料科学与工程 材料科学与工程
- 化学工程是化学工程的重要组成部分.
- 流体动力学 流体动力学
背景情况:
- 封装低表面张力液滴对于制药,环境工程和热管理至关重要.
- 冲击驱动液体-液体封装 (LLE) 是一个有前途但未被充分研究的滴滴封装技术.
- 使用冲击驱动的LLE对低表面张力滴滴的受控封装尚未从根本上研究.
研究的目的:
- 推进超快冲击驱动的LLE技术,用于控制低表面张力滴滴的封装.
- 通过实验来研究控制这种封装过程的基本机制和参数.
主要方法:
- 实验性演示超快冲击驱动的液体-液体封装 (LLE).
- 使用的FC-40滴 (表面张力低至16mN/m) 具有不同的撞击直径 (1.791.26mm).
- 采用了超薄的油接口 (外) 层,并分析了封装模式.
主要成果:
- 在几毫秒内成功封装了低表面电压的FC-40滴.
- 确定了三种封装模式:界面捕获,气泡穿透和没有气泡穿透.
- 通过调整冲击动能和界面层厚度,证明了对囊形态和尺寸分布的精确控制.
结论:
- 该研究提供了对低表面张力滴滴的冲击驱动LLE的基本理解.
- 较厚的接口层促进了无气泡的囊.
- 提供了有价值的见解,以高效和成本效益地生产各种应用中的功能囊.
相关概念视频
02:26Molecular Comparison of Gases, Liquids, and Solids
55.6K
Particles in a solid are tightly packed together (fixed shape) and often arranged in a regular pattern; in a liquid, they are close together with no regular arrangement (no fixed shape); in a gas, they are far apart with no regular arrangement (no fixed shape). Particles in a solid vibrate about fixed positions (cannot flow) and do not generally move in relation to one another; in a liquid, they move past each other (can flow) but remain in essentially constant contact; in a gas, they move...
55.6K
02:57Surface Tension, Capillary Action, and Viscosity
33.6K
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...
33.6K
01:18Rise of Liquid in a Capillary Tube
3.3K
When very thin cylindrical tubes, called capillaries, are dipped in a liquid, the liquid rises or falls in the tube compared to the surrounding liquid. This phenomenon is called capillary action. Capillary action occurs due to the combination of two opposing forces: the cohesive forces of the liquid, which cause it to stick to itself and form a rounded shape, and the adhesive forces between the liquid and the walls of the container, which cause the liquid to be attracted to the container walls.
3.3K
01:09Deriving the Speed of Sound in a Liquid
981
As with waves on a string, the speed of sound or a mechanical wave in a fluid depends on the fluid's elastic modulus and inertia. The two relevant physical quantities are the bulk modulus and the density of the material. Indeed, it turns out that the relationship between speed and the bulk modulus and density in fluids is the same as that between the speed and the Young's modulus and density in solids.
The speed of sound in fluids can be derived by considering a mechanical wave...
The speed of sound in fluids can be derived by considering a mechanical wave...
981
01:11High-Performance Liquid Chromatography: Introduction
3.6K
High-performance liquid chromatography(HPLC), formerly referred to as High-pressure liquid chromatography, is a powerful technique used to separate, identify, and quantify components in complex mixtures. The term "high pressure" refers to using high pressure to push the liquid mobile phase through the tightly packed columns.
In HPLC, two phases play a critical role in the separation process:
In HPLC, two phases play a critical role in the separation process:
3.6K
00:57High-Performance Liquid Chromatography: Instrumentation
3.1K
High-performance liquid chromatography, or HPLC, is an analytical technique that separates liquid samples under high pressures. An HPLC instrument consists of glass bottles for storing solvents called mobile phase reservoirs. HPLC-grade solvents are used to maintain high purity, and the dissolved gases are removed using a degasser, such as a vacuum pumping system or sparging with helium. The solvents are then pumped into the analytical column using a screw-driven syringe or reciprocating pumps.
3.1K