Dynamic aspects of electroosmotic flow

被引：16

作者：

Zhang, Yali ^{[1
]}

Wong, Teck Neng ^{[1
]}

Yang, Chun ^{[1
]}

Ooi, Kim Tiow ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Mech & Prod Engn, Singapore 639798, Singapore

来源：

MICROFLUIDICS AND NANOFLUIDICS | 2006年 / 2卷 / 03期

关键词：

D O I：

10.1007/s10404-005-0063-6

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This article presents an analysis of the frequency and time dependent electroosmotic flow in open-end and closed-end microchannels of arbitrary cross-section shape. In the numerical model, the modified Navier-Stokes equation governing the AC electroosmotic flow is solved using the control volume method. The iterative approach is used to determine the induced backpressure gradient. The potential distribution of the EDL in the channel is obtained by solving the non-linear 2D Poisson-Blotzmann equation. The comparison between the control volume formulation and the Green's function method for the case of a rectangular microchannel shows a good agreement. The time evolution of the electroosmotic flow and the effect of a frequency-dependent AC electric field on the oscillating electroosmotic flow are also examined. The effect of the induced backpressure gradient with the frequency of the applied electric field is also shown.

引用

页码：205 / 214

页数：10

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