Electrokinetic Flow and Measure Method in Microfluidic

Lei Gong; Jian Kang Wu; Bo Chen

doi:10.4028/www.scientific.net/AMM.275-277.649

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 275-277Electrokinetic Flow and Measure Method in...

Electrokinetic Flow and Measure Method in Microfluidic

Abstract:

An analytical solution for pressure-driven electrokinetic flows in a narrow capillary is presented based on the Poisson–Boltzmann equation for electrical double layer and the Navier–Stokes equations for incompressible viscous fluid. The analytical solutions indicate that pressure-driven flow of an electrolyte solution in microchannel with charged solid wall induces a streaming potential, which is proportional to the flowrate and induces an electroviscous effect on flow. A device for measuring the electrokinetic flow rate and streaming potential is proposed.

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Periodical:

Applied Mechanics and Materials (Volumes 275-277)

Pages:

649-653

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.275-277.649

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Online since:

January 2013

Authors:

Lei Gong, Jian Kang Wu, Bo Chen

Keywords:

Electric Double Layer, Electrokinetic, Electro-Viscous Effects, Flow Rate, Micro-Fluidics, Streaming Potential

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References

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