微交叉管道中电渗流动的检测
首发时间:2006-11-13
摘要:电渗是微观尺度下电中性的液体微团受到管壁附近双电层中离子化的液体微团的拖动,在外加电场作用下作定向迁移的物理现象。本文用微观粒子图像测速方法对微交叉管道中的电渗流动进行了测量。微交叉管道设计为正交叉结构,采用湿法刻蚀在透明玻璃材料上加工而成。试验表明微交叉管道中的流量与电渗所施加的外电场相关,电渗流在两通道中的流量比近似于施加在各自端路上电势之比。试验结果为微流控系统利用电渗原理实现流量的分配和控制提供了依据。
For information in English, please click here
Micro Particle Image Velocimetry Measurement of Electroosmotic Flow in Micro Cross-straight Channe
Abstract:Electro-osmosis, or electro-osmotic flow (EOF), is the phenomenon that ionized liquid locating in the electric double layer (EDL) drags the electrically neutral liquid under applied external electric field. In this paper, EOF in an across-straight channel is measured by micro particle image velocimetry. The cross-straight channel is fabricated by wet chemical etching process on glass. The experiment shows that the flow patterns in cross-straight channel are controlled by different patterns of applied electric field, which directly make controllable the flux ratio of separated fluids.
Keywords: Electro-osmosis, Micro channels, Micro particle image velocimetry
论文图表:
引用
No.9498139201163414****
同行评议
共计0人参与
勘误表
微交叉管道中电渗流动的检测
评论
全部评论0/1000