相关实验视频

Updated: May 20, 2025

Double Emulsion Generation Using a Polydimethylsiloxane PDMS Co-axial Flow Focus Device

Double Emulsion Generation Using a Polydimethylsiloxane PDMS Co-axial Flow Focus Device

Published on: December 25, 2015

密集乳液的方向流动性通过横向形微硬度激活

Giacomo Guastella¹, Daniele Filippi¹, Davide Ferraro¹

¹Dipartimento di Fisica e Astronomia 'G. Galilei', Via Marzolo n. 8, 35131 Padova, PD, Italy.

|March 27, 2025

概括

形的微粗度增强了微流体通道中的乳液流动. 这种墙壁纹理通过激活滴滴重新排列来改善流体化,在坡的方向上增加了高达30%的流量.

科学领域:

软物质物理学软物质物理学
微流体学微流体学
类风病学类风病学类风病学

背景情况:

无形软固体如乳液,泡和凝在许多工业过程中至关重要.
它们从固体转变为流体的行为是由产量压力控制的.
墙壁相互作用可以通过触发局部重新安排来增强流动性.

研究的目的:

为了研究形微粗度对微流体通道中乳液滴的流化的影响.
量化这种表面地形对压力驱动条件下的流动行为的影响.

主要方法:

使用无面膜光刻法在一面墙上制造具有形微粗度的微通道.
在压力驱动的流程中测量乳液滴速的概况.
对比的流动行为在方向和反对坡道.

主要成果:

乳液流量在形槽的爬坡坡的方向上得到增强.
这种增强取决于应用的压力梯度.
与相反的流动方向相比,观察到体积流速显著增加 (高达30%).

结论:

形微粗度有效促进微流体系统中的乳液的流化.
表面地形可被设计为控制和增强软固体的流动.
这一发现对优化微流体设备和相关技术中的流体处理有意义.

关键词:

方向的粗度方向的粗度乳液乳液是一种乳液.流化流化流化没有面具的光刻法.微流体通道的微流体通道

更多相关视频

Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions

Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions

Published on: April 19, 2018

Microfluidic Devices for Characterizing Pore-scale Event Processes in Porous Media for Oil Recovery Applications

Microfluidic Devices for Characterizing Pore-scale Event Processes in Porous Media for Oil Recovery Applications

Published on: January 16, 2018

相关概念视频

Membrane Fluidity

Membrane Fluidity

Cell membranes are composed of phospholipids, proteins, and carbohydrates loosely attached to one another through chemical interactions. Molecules are generally able to move about in the plane of the membrane, giving the membrane its flexible nature called fluidity. Two other features of the membrane contribute to membrane fluidity: the chemical structure of the phospholipids and the presence of cholesterol in the membrane.