Diffusion in the Micro-Channel Flow Driven by Electroosmosis

ZHANG Kai; LIN Jian-zhong; LI Zhi-hua

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ZHANG Kai, LIN Jian-zhong, LI Zhi-hua. Diffusion in the Micro-Channel Flow Driven by Electroosmosis[J]. Applied Mathematics and Mechanics, 2006, 27(5): 512-518.

Citation:

ZHANG Kai, LIN Jian-zhong, LI Zhi-hua. Diffusion in the Micro-Channel Flow Driven by Electroosmosis[J]. Applied Mathematics and Mechanics, 2006, 27(5): 512-518.

Citation:

ZHANG Kai, LIN Jian-zhong, LI Zhi-hua. Diffusion in the Micro-Channel Flow Driven by Electroosmosis[J]. Applied Mathematics and Mechanics, 2006, 27(5): 512-518.

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Diffusion in the Micro-Channel Flow Driven by Electroosmosis

1.
Department of Mechanics, State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, P. R. China;

Received Date: 2004-10-20
Rev Recd Date: 2006-01-10
Publish Date: 2006-05-15

Abstract

Abstract

Numerical simulation using the finite differential method was carried out to analyze the diffusion of an impulse sample in the micro-channel driven by electroosmosis. The results show that the electrical field strength applied externally and the concentration of buffer solution played a significant role in the diffusion of sample, however, hydraulic diameter and aspect ratio of height to width of channel played a small role in it. Weakening the electrical field strength applied externally and the concentration of buffer solution properly could prevent the sample band from broadening effectively, and promoted the efficiency of testing and separation as well as kept a faster speed of transport. The conclusions were helpful to the optimal design for micro-channel.
- micro-channel,
- diffusion,
- driven by electroosmosis,
- numerical simulation

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References(10)

References

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