Electroosmotic flow at a liquid-air interface

被引：49
作者：
Lee, Jacky S. H.
Li, Dongqing
机构：
[1] Vanderbilt Univ, Dept Mech Engn, Nashville, TN 37235 USA
[2] Univ Toronto, Dept Mech & Ind Engn, Toronto, ON M5S 3G8, Canada
来源：
MICROFLUIDICS AND NANOFLUIDICS | 2006年 / 2卷 / 04期
基金：
加拿大自然科学与工程研究理事会;
关键词：
free surface electroosmotic flow; electroosmotic flow; two-phase flow; electrophoresis;
D O I：
10.1007/s10404-006-0084-9
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
This paper presents the first experimental evidence on electroosmotic flow at a liquid-air interface. A PDMS microchannel with an opening to air was created to allow for the formation of a liquid-air interface. Polystyrene particles were used to visualize the liquid motion and the experiments found that the particle velocity at the liquid-air interface was significantly slower than the particle velocity in the bulk. This result agrees with a mathematical model that considers the effects of electrical surface charges at the liquid-air interface in electroosmotic flow.
引用
收藏
页码：361 / 365
页数：5
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