相关实验视频

Updated: Jul 28, 2025

Fabricating High-viscosity Droplets using Microfluidic Capillary Device with Phase-inversion Co-flow Structure

Fabricating High-viscosity Droplets using Microfluidic Capillary Device with Phase-inversion Co-flow Structure

Published on: April 17, 2018

微结构装饰表面上的二元混合液滴蒸发和混合棒滑模式

Khaloud Moosa Al Balushi^1,2, Gail Duursma¹, Prashant Valluri¹

¹School of Engineering, Institute for Multiscale Thermofluids, The University of Edinburgh, Edinburgh EH9 3FD, Scotland, UK.

Langmuir : the ACS journal of surfaces and colloids

|June 5, 2023

概括

研究人员研究了水,乙醇和混合液滴蒸发在微柱状表面. 他们发现了两个新的蒸发模式:增加和减少接触角度混合棒滑模式,为微流体应用提供了洞察力.

科学领域:

表面科学是一门科学.
流体动力学流体动力学
材料科学是一种材料科学.

背景情况:

滴滴-表面相互作用对于诸如喷墨印刷和DNA图案设计等应用至关重要.
了解结构表面的蒸发动态是控制这些过程的关键.

研究的目的:

实验性地研究纯水,纯乙醇及其二元混合物的蒸发在疏水的微柱状表面.
识别和描述结构表面上的新型滴水蒸发模式.

主要方法:

使用纯水,纯乙醇和二元混合物的滴水蒸发的实验研究.
使用疏水的微型柱状表面,柱间间距不同.
观察和分析滴水的行为,包括接触角度和接触半径的变化.

主要成果:

确定了三种经典的蒸发模式 (钉钉,棒滑,混合) 和两种新模式:增加和减少接触角混合棒滑.
新模式归因于蒸发和表面结构期间的表面张力变化.
蒸发模式的持续时间取决于表面张力和柱间距,水,乙醇和混合物的行为不同.

结论:

这项研究揭示了微柱状表面上新的滴水蒸发动态.
结果为微流体和图案设计中的应用提供了操纵流体蒸发的指导方针.
通过调整流体特性和表面结构参数,可以控制蒸发.

更多相关视频

Glass-Based Devices to Generate Drops and Emulsions

Glass-Based Devices to Generate Drops and Emulsions

Published on: April 5, 2022

Temperature-Controlled Assembly and Characterization of a Droplet Interface Bilayer

Temperature-Controlled Assembly and Characterization of a Droplet Interface Bilayer

Published on: April 19, 2021

相关概念视频

Phase Transitions: Vaporization and Condensation

Phase Transitions: Vaporization and Condensation

The physical form of a substance changes on changing its temperature. For example, raising the temperature of a liquid causes the liquid to vaporize (convert into vapor). The process is called vaporization—a surface phenomenon. Vaporization occurs when the thermal motion of the molecules overcome the intermolecular forces, and the molecules (at the surface) escape into the gaseous state. When a liquid vaporizes in a closed container, gas molecules cannot escape. As these gas phase...