PMID: 20631445Jul 16, 2010Paper

Experimental and theoretical characterization of an AC electroosmotic micromixer

Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry
Naoki SasakiHaeng-Boo Kim

Abstract

We have reported on a novel microfluidic mixer based on AC electroosmosis. To elucidate the mixer characteristics, we performed detailed measurements of mixing under various experimental conditions including applied voltage, frequency and solution viscosity. The results are discussed through comparison with results obtained from a theoretical model of AC electroosmosis. As predicted from the theoretical model, we found that a larger voltage (approximately 20 V(p-p)) led to more rapid mixing, while the dependence of the mixing on frequency (1-5 kHz) was insignificant under the present experimental conditions. Furthermore, the dependence of the mixing on viscosity was successfully explained by the theoretical model, and the applicability of the mixer in viscous solution (2.83 mPa s) was confirmed experimentally. By using these results, it is possible to estimate the mixing performance under given conditions. These estimations can provide guidelines for using the mixer in microfluidic chemical analysis.

References

Nov 23, 2000·Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics·N G GreenA Castellanos
Sep 21, 2002·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·N G GreenA Castellanos
Mar 31, 2006·Lab on a Chip·Naoki SasakiHaeng-Boo Kim
May 24, 2008·Analytical Chemistry·Jonathan WestAndreas Manz
Mar 4, 2009·Lab on a Chip·Wee Yang NgIsabel Rodríguez
Sep 20, 2011·Genome Research·Dent EarlBenedict Paten

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Citations

Jan 11, 2012·Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry·Naoki Sasaki
Sep 12, 2012·Electrophoresis·Naoki SasakiHaeng-Boo Kim

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