| 非对称电极表面微观形貌对交流电渗流速的影响 |
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| 引用本文： | 姜洪源,李姗姗,侯珍秀,任玉坤,孙永军. 非对称电极表面微观形貌对交流电渗流速的影响[J]. 物理学报, 2011, 60(2): 20702-020702 |
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| 作者姓名： | 姜洪源 李姗姗 侯珍秀 任玉坤 孙永军 |
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| 作者单位： | (1)哈尔滨工业大学机电工程学院,哈尔滨 150001; (2)哈尔滨工业大学机电工程学院,哈尔滨 150001; 浙江大学流体传动及控制国家重点实验室,杭州 310027 |
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| 基金项目： | 国家自然科学基金(批准号:51075087)和浙江大学流体传动及控制国家重点实验室开放基金(批准号: GZKF-201004)资助的课题. |
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| 摘 要： | 经典交流电渗理论是利用电场进行非机械式微流体驱动的基础.传统理论交流电渗理论以双电层理论为基础,通过耦合电场方程以及流场方程得到微电极表面交流电渗流速表达式,通常与实验流速相差较大. 以电极表面微观形貌对交流电渗流速的影响为研究目标,定义微电极表面粗糙度为微观形貌特征参数,建立了等效双电层模型,并对传统交流电渗流速公式进行了修正.理论并仿真分析了表面粗糙度对于交流电渗流速的影响,利用非对称电极对交流电渗微流体驱动进行了实验研究,并进行对比分析.结果表明,理论分析与实验结果具有较好的一致性.关键词：交流电渗电极表面粗糙度等效双电层
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| 关 键 词： | 交流电渗 电极表面粗糙度 等效双电层 |
| 收稿时间： | 2010-04-03 |
Effect of asymmetrical micro electrode surface topography on alternating current electroosmosis flow rate |
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| Jiang Hong-Yuan,Li Shan-Shan,Hou Zhen-Xiu,Ren Yu-Kun,Sun Yong-Jun. Effect of asymmetrical micro electrode surface topography on alternating current electroosmosis flow rate[J]. Acta Physica Sinica, 2011, 60(2): 20702-020702 |
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| Authors: | Jiang Hong-Yuan Li Shan-Shan Hou Zhen-Xiu Ren Yu-Kun Sun Yong-Jun |
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| Affiliation: | School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001,China; State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China;School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001,China;School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001,China;School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001,China;School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001,China |
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| Abstract: | 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 |
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