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AC Electroosmosis(ACEO) induced by electric field is the basic approach for non-mechanical microfluid pumping. Traditional ACEO theory is based on electric double layer (EDL) theory, and gives electric-flow field coupling equations for ACEO flo w rate. But there is a big deviation between the calculation data and experimental velocities. In this paper, electrode surface topography is included to solve ACEO flow rate. Withelectrode surfaceroughness as the characteristic parameter, equivalent EDL model is set up to modify the classical EDL model. The relationship between flow rate and electrode surface roughness is studied. Experiment results agree with the simulation very well, proving the feasibility ofequivalent EDL model.
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Keywords:
- alternating current electroosmosis /
- electrode surface roughness /
- effective electric double layer
[1] Ramos A, Morgan H, Green N G, Castellanos A 1998 J. Phys. D: Appl. Phys. 31 2338
[2] Ramos A, Gonzalez A, Castellanos A, Green N G, Morgan H 2003 Phys. Rev. E 67 056302
[3] Jiang H Y, Ren Y K, Ao H R, Ramos A 2008 Chin. Phys. B 17 4541
[4] Wee Y N, Shireen G, Yee C L, Chun Y, Isabel R 2009 Lab. Chip. 9 802
[5] Ren Y K, Ao H R, Gu J Z, Jiang H Y, Ramos A 2009 Acta Phys. Sin. 58 7869 (in Chinese) [任玉坤、 敖宏瑞、 顾建忠、 姜洪源、 Ramos A 2009 58 7869]
[6] Stone H, Stroock A, Ajdari A 2004 Annu. Rev. Fluid Mech. 36 381
[7] Liu H W, Ma D M, Shi W, Tian L Q, Wang X M, Xie W P, Xu M, Zhou L J 2009 Acta Phys. Sin. 58 1219 (in Chinese) [刘宏伟、 马德明、 施 卫、 田立强、 王馨梅、 谢卫平、 徐 鸣、 周良骥 2009 58 1219]
[8] Li B X, Ye M Y, Chu Q Y, Yu J 2007 Acta Phys. Sin. 56 3447 (in Chinese) [李宝兴、 叶美英、 褚巧燕、 俞 健 2007 56 3447]
[9] Suh Y K, Kang S 2008 Phys. Rev. E 77 031504
[10] Wang L J, Zhang S M, Zhu J H, Zhu J J, Zhao D G, Liu Z S, Jiang D S, Wang Y T, Yang H 2010 Chin. Phys. B 19 017307
[11] Green N G, Ramos A, Gonzalez A, Morgan H, Castellanos A 2000 Phys. Rev. E 61 4011
[12] Bazant M Z, Kilic M S, Storey B D, Ajdari A 2009 Adv. Colloid Interface Sci. 152 48
[13] Zhang C B, Chen Y P, Shi M H, Fu P P, Wu J F 2009 Acta Phys. Sin. 58 7050 (in Chinese) [张程宾、 陈永平、 施明恒、 付盼盼、 吴嘉峰 2009 58 7050]
[14] Hao P F, Yao Z H, He F 2007 Acta Phys. Sin. 56 4728 (in Chinese) [郝鹏飞、 姚朝晖、 何 枫 2007 56 4728]
[15] Zhang M L, Tian Y, Jiang J L, Meng Y G, Wen S Z 2009 Acta Phys. Sin. 58 8394 (in Chinese) [张敏梁、 田 煜、 蒋继乐、 孟永刚、 温诗铸 2009 58 8394]
[16] Jiang H Y, Yan B S, Yang H K, Ramos A 2007 Chin. Mech. Engin. 14 1672 (in Chinese) [姜洪源、 闫宝森、 杨胡坤、 Ramoa A 2007 中国机械工程 14 1672]
[17] Castellanos A, Ramos A, Gonzalez A, Green N G, Morgan H 2003 J. Phys. D: Appl. Phys. 36 2584
[18] Morgan H, Green N G 2003 AC Electrokinetics: Colloids and Nanoparticles (Baldock: Research Studies Press)
[19] Hunter R 1993 Introduction to Modern Colloid Science (Oxford: Oxford University Press)
[20] Olesen L 2006 Ph.D. Thesis (Technical University of Denmark)
[21] Sanchez P G, Ramos A 2008 Microfluid Nanofluid 5 307
[22] Lian M, Wu J 2009 Appl. Phys. Lett. 94 064101
[23] Yang H K 2008 Ph.D. Thesis (Harbin: Harbin Institute of Technology) (in Chinese)[杨胡坤 2008 博士学位论文 (哈尔滨: 哈尔滨工业大学)]
[24] Wu J, Ben Y X, Battigelli D, Chang H C 2005 Ind. Eng. Chem. Res. 44 2815
[25] Gonzalez A, Ramos A, Garcia S P, Castellanos A 2010 Phys. Rev. E 81 016320
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[1] Ramos A, Morgan H, Green N G, Castellanos A 1998 J. Phys. D: Appl. Phys. 31 2338
[2] Ramos A, Gonzalez A, Castellanos A, Green N G, Morgan H 2003 Phys. Rev. E 67 056302
[3] Jiang H Y, Ren Y K, Ao H R, Ramos A 2008 Chin. Phys. B 17 4541
[4] Wee Y N, Shireen G, Yee C L, Chun Y, Isabel R 2009 Lab. Chip. 9 802
[5] Ren Y K, Ao H R, Gu J Z, Jiang H Y, Ramos A 2009 Acta Phys. Sin. 58 7869 (in Chinese) [任玉坤、 敖宏瑞、 顾建忠、 姜洪源、 Ramos A 2009 58 7869]
[6] Stone H, Stroock A, Ajdari A 2004 Annu. Rev. Fluid Mech. 36 381
[7] Liu H W, Ma D M, Shi W, Tian L Q, Wang X M, Xie W P, Xu M, Zhou L J 2009 Acta Phys. Sin. 58 1219 (in Chinese) [刘宏伟、 马德明、 施 卫、 田立强、 王馨梅、 谢卫平、 徐 鸣、 周良骥 2009 58 1219]
[8] Li B X, Ye M Y, Chu Q Y, Yu J 2007 Acta Phys. Sin. 56 3447 (in Chinese) [李宝兴、 叶美英、 褚巧燕、 俞 健 2007 56 3447]
[9] Suh Y K, Kang S 2008 Phys. Rev. E 77 031504
[10] Wang L J, Zhang S M, Zhu J H, Zhu J J, Zhao D G, Liu Z S, Jiang D S, Wang Y T, Yang H 2010 Chin. Phys. B 19 017307
[11] Green N G, Ramos A, Gonzalez A, Morgan H, Castellanos A 2000 Phys. Rev. E 61 4011
[12] Bazant M Z, Kilic M S, Storey B D, Ajdari A 2009 Adv. Colloid Interface Sci. 152 48
[13] Zhang C B, Chen Y P, Shi M H, Fu P P, Wu J F 2009 Acta Phys. Sin. 58 7050 (in Chinese) [张程宾、 陈永平、 施明恒、 付盼盼、 吴嘉峰 2009 58 7050]
[14] Hao P F, Yao Z H, He F 2007 Acta Phys. Sin. 56 4728 (in Chinese) [郝鹏飞、 姚朝晖、 何 枫 2007 56 4728]
[15] Zhang M L, Tian Y, Jiang J L, Meng Y G, Wen S Z 2009 Acta Phys. Sin. 58 8394 (in Chinese) [张敏梁、 田 煜、 蒋继乐、 孟永刚、 温诗铸 2009 58 8394]
[16] Jiang H Y, Yan B S, Yang H K, Ramos A 2007 Chin. Mech. Engin. 14 1672 (in Chinese) [姜洪源、 闫宝森、 杨胡坤、 Ramoa A 2007 中国机械工程 14 1672]
[17] Castellanos A, Ramos A, Gonzalez A, Green N G, Morgan H 2003 J. Phys. D: Appl. Phys. 36 2584
[18] Morgan H, Green N G 2003 AC Electrokinetics: Colloids and Nanoparticles (Baldock: Research Studies Press)
[19] Hunter R 1993 Introduction to Modern Colloid Science (Oxford: Oxford University Press)
[20] Olesen L 2006 Ph.D. Thesis (Technical University of Denmark)
[21] Sanchez P G, Ramos A 2008 Microfluid Nanofluid 5 307
[22] Lian M, Wu J 2009 Appl. Phys. Lett. 94 064101
[23] Yang H K 2008 Ph.D. Thesis (Harbin: Harbin Institute of Technology) (in Chinese)[杨胡坤 2008 博士学位论文 (哈尔滨: 哈尔滨工业大学)]
[24] Wu J, Ben Y X, Battigelli D, Chang H C 2005 Ind. Eng. Chem. Res. 44 2815
[25] Gonzalez A, Ramos A, Garcia S P, Castellanos A 2010 Phys. Rev. E 81 016320
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