Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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A STUDY ON CHARACTERISTICS OF AC ELECTROOSMOTIC FLOWS AND MIXING IN A MICROCHANNEL WITH COPLANAR ELECTRODES

마이크로 채널 내 교류 전기삼투 현상을 이용한 유체 유동 및 혼합에 대한 수치해석적 연구

  • Published : 2007.03.31
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Abstract

This paper presents numerical results of fluid flows and mixing in a microfluidic device with AC electroosmotic flows (AC-EOF) around coplanar electrodes attached on the top and bottom walls. To obtain the flow and mixing characteristics, numerical computations are performed by using a commercial code, CFX10. Experiment was performed to confirm the generation of the drift velocity around the electrodes. It was found that near the coplanar electrodes 3-D complex flows are generated. The AC-electroosmotic flow on the electrodes plays an important role in mixing the liquid.

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References

  1. Green, N. G., Ramos, A., Gonzalez, A., Morgan, H. and Castellanos, A., 2002, "Fluid Flow Induced by Nonuniform AC Electric Flields in Electrolytes on Microelectrodes. III. Observation of Streamlines and Numerical simulation," Phys. Rev. E, Vol.66, pp.L25-L30
  2. Wu, J., Ben, Y., Battigelli, D. and Chang, H. -C., 2005a, "Long-range AC Electroosmotic Trapping and Detection of Bioparticles," Ind. Eng. Chem. Res., Vol.44, pp.2815-2822 https://doi.org/10.1021/ie049417u
  3. Wu, J., Ben, Y. and Chang, H.-C., 2005b, "Particle detection by electrical impedance spectroscopy with asymmetric-polarization AC electroosmotic trapping," Microfluid Nanofluid, Vol.1, pp.161-167 https://doi.org/10.1007/s10404-004-0024-5
  4. Lian, M., Islam, N. and Wu, J., 2006, "Particle Line Assembly/Patterning by Microfluidic AC Electroosmosis," J. Phys: Conf. Series, Vol.34, pp.589-594 https://doi.org/10.1088/1742-6596/34/1/097
  5. Bhatt, K. H., Grego, S. and velev, O. D., 2005, "An AC Electrokinetic Technique for Collection and Concentration of Particles and Cells on Patterned Electrodes," Langmuir, Vol.21, pp. 6603-6612 https://doi.org/10.1021/la050658w
  6. 서용권, 허형석, 강금분, 2006, "마이크로 채널 내 사다리꼴 전극의 제타 포텐셜 변화에 따른 혼합효과 증대에 대한 수치해석적 연구," 한국전산유체공학회지, 제11권, 제3호, pp.46-51