Potential changes of the cross section for rectangular microchannel with different aspect ratios

Hyo Song Lee; Ki Ho Kim; Jae Keun Yu; Soon Young Noh; Jae Ho Choi; Soo Kyung Yoon; Chang-Soo Lee; Taek-Sung Hwang; Young Woo Rhee

Korean Journal of Chemical Engineering, Vol.24, No.1, 186-190, January, 2007

DOI10.1007/s11814-007-5030-3 Export Citation

Potential changes of the cross section for rectangular microchannel with different aspect ratios

Hyo Song Lee , Ki Ho Kim, Jae Keun Yu, Soon Young Noh, Jae Ho Choi, Soo Kyung Yoon¹, Chang-Soo Lee , Taek-Sung Hwang , and Young Woo Rhee^†

Department of Chemical and Biological Engineering, Chungnam National University, Daejeon 305-764, Korea
¹Accreditation Board for Engineering Education of Korea, Seoul 135-513, Korea

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In this study, we investigated the potential changes of a rectangular cross section having different aspect ratio and area. A 2D Poisson-Boltzmann equation was used to model the electric double layer field of the cross section. The potential change of the cross section was studied numerically with FEMLAB 3.0 to understand the geometry effects of the rectangular microchannel used for electroosmotic flow. According to the result, the cross-section geometry shows significant influences on the potential field. The potential distribution shows same tendency with various cross-section areas in the same aspect ratio. The potential gradient increases with the increase of the cross section area.

Keywords:Electroosmosis;Rectangular Microchannel;Potential;Cross Section

[References]

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Stone HA, Kim S, AIChE J., 47(6), 1250 (2001)
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[Referenced By]

[Related Articles]

[1] Arulanandam S, Li D, Colloids Surf. A: Physicochem. Eng. Asp., 161, 89 (2000)

[2] Chun MS, Korean J. Chem. Eng., 19(5), 729 (2002)

[3] Conlisk AT, McFerran J, Zheng Z, Hansford D, Anal. Chem., 74, 2139 (2002)

[4] Gao YD, Wong TN, Yang C, Ooi KT, J. Colloid Interface Sci., 284(1), 306 (2005)

[5] Kou Q, Yesilyurt I, Studer V, Belotti M, Cambril E, Chen Y, Microelectron. Eng., 73, 876 (2004)

[6] Levine S, Mrriott JR, Neale G, Epstein N, J. Colloid Interface Sci., 52, 136 (1975)

[7] Li D, Electrokinetics in Microfluidics, Elsevier (2004)

[8] Manz A, Becker H, Microsystem Technology in Chemistry and Life Science, Springer (1998)

[9] Ren CL, Li DQ, J. Colloid Interface Sci., 294(2), 482 (2006)

[10] Stone HA, Kim S, AIChE J., 47(6), 1250 (2001)

[11] Bentrup U, Bruckner A, Richter M, Fricke R, Appl. Catal. B: Environ., 32(4), 229 (2001)

[12] Bosch H, Janssen F, Catal. Today, 2, 369 (1988)