表面镀金SU-8微柱的低频电动旋转特征

侯立凯; 任玉坤; 姜洪源

doi:10.7498/aps.62.200702

摘要

依据传统Maxwell-Wagner界面极化理论, 金属微纳米粒子由于具有极高电导率, 在旋转电场作用下无明显电旋转运动. 然而, 本文针对镀金SU-8微柱开展实验研究, 发现镀金微柱在低频条件下的快速旋转运动现象. 据此, 通过考虑镀金微柱表面双电层效应, 理论分析并实验验证镀金微柱的低频电旋转特征. 首先, 建立电场中微柱的近似椭球模型, 分析固-液接触面双电层作用下的金属粒子极化机理, 推导旋转电场作用下镀金微柱的转矩公式及电旋转角速度公式. 其次, 搭建实验平台, 分别对镀金微柱在三种不同电导率溶液、100 Hz–30 MHz频率范围内的电旋转特征进行对比实验研究. 最后, 对实验结果进行分析和讨论, 并通过考虑镀金微柱与基底之间摩擦作用等因素, 验证实验研究与理论研究的一致性.

关键词:

Abstract

According to the theory of traditional Maxwell-Wagner interface polarization, the metal micro/nano particles have no obvious electrorotation behavior under the alternating current electric field. However, we find the opposite experimental results. In this paper, electrorotation experiments are carried out, and the basic mechanism of gold-coated SU-8 microrods is presented. Therefore the electrorotation characteristics of gold-coated microrod at low frequency are analysed by considering the surface electric double layer at the microrod-electrolyte interface. Specifically, first we establish an approximate ellipsoid model in the electric field, analyze the polarization mechanism of metal particles under the action of solid-liquid interface electric double layer, and then calculate the electrorotation torque and present an electrorotation angular speed formula of the gold-coated microrod. Secondly, electrorotation experiments of gold-coated SU-8 microrods suspended in electrolytes with different conductivities are presented in a frequency range of 100 Hz to 30 MHz. Finally, the experimental results are discussed, and compared with the theoretical analysis, showing the experimental results are in good agreement with theoretical analyses by considering the friction between the microrods and substrate.

Keywords:

作者及机构信息

1.
哈尔滨工业大学机电工程学院, 哈尔滨 150001;

2.
浙江大学, 流体动力与机电系统国家重点实验室, 杭州 310027

基金项目: 国家自然科学基金(批准号: 51075087)和浙江大学流体动力与机电系统国家重点实验室开放基金(批准号: GZKF-201107)资助的课题.

Authors and contacts

1.
School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China;

2.
State Key Laboratory of Fluid Power Transimission and Control, Zhejiang University, Hangzhou 310027, China

Funds: Project supported by the National Natural Science Foundation of China (Grant No. 51075087) and the State Key Laboratory of Fluid Power Trans-mission and Control of Zhejiang University, China (Grant No. GZKF-201107).

参考文献

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[2]	Morgan H, Green N G 2003 AC Electrokinetics: Colloids and Nanoparticles (Beijing: Higher Education Press) p119
[3]	Morales M C, Lin H, Zahn J D 2012 Lab. Chip. 12 99
[4]	Zhu X L, Yin Z F, Gao Z Q, Ni Z H 2010 Sci. China: Tech. Sci. 53 2388
[5]	Yasukawa T, Suzuki M, Shiku H, Matsue T 2009 Sens. Actuator. B: Chem. 142 400
[6]	Jones T B 1995 Electromechanics of Particles (New York: Cambridge University Press)
[7]	Desai A, Lee S W, Tai C Y 1999 Sens. Actuator. A: Phys. 73 37
[8]	Reichle C, Muller T, Schnelle T, Fuhr G 1999 J. Phys. D: Appl.Phys. 32 2128
[9]	Zimmermann D, Zhou A, Kiesel M, Feldbauer K, Terpitz U, Haase W, Schneider-Hohendorf T, Bamberg E, Sukhorukov V L 2008 Biochem. Biophys. Res. Commun. 369 1022
[10]	Reichle C, Muller T, Schnelle T, Fuhr G 1999 J. Phys. D: Appl.Phys. 32 2128
[11]	Jiang H Y, Ren Y K, Han X J, Tao Y, Li S S 2011 Sci. China: Tech. Sci. 54 643
[12]	Hermanson K D, Lumsdon S O, Williams J P, Kaler E W, Velev O D 2001 Science 294 1082
[13]	Ren Y K, Tao Y, Hou L K, Jiang H Y 2013 Chin. Phys. B 22 087701
[14]	Jiang H Y, Ren Y K, Tao Y 2011 Chin. Phys. B 20 057701
[15]	Mayya K S, Schoeler B, Caruso F 2003 Adv. Funct. Mater. 13 183
[16]	Lim J K, Eggeman A, Lanni F, Tilton R D, Majetich S A 2008 Adv. Mater. 20 1721
[17]	Gangwal S, Gayre O J, Bazant M Z, Velev O D 2008 Phys. Rev. Lett. 100 058302
[18]	Grosse C, Shilov V N 1996 J. Phys. Chem. 100 1771
[19]	Ren Y K, Morganti D, Jiang H Y, Ramos A, Morgan H 2011 Langmuir 27 2128
[20]	Lorenz H, Despont M, LaBianca N, Renaud P, Vettiger P 1997 J. Micromech. Microeng. 7 121
[21]	Morganti D, Morgan H 2011 Colloid. Surf. A: Phys. 376 67
[22]	Rose K A, Meier J A, Dougherty G M, Santiago J G 2007 Phys. Rev. E 75 011503
[23]	García-Sanchez P, Ren Y K, Arcenegui J J, Morgan H, Ramos A 2012 Langmuir 28 13861
[24]	Minoura I, Muto E 2006 Biophysi. J. 90 3739
[25]	Jiang H Y, Ren Y K, Tao Y 2011 Acta Phys. Sin. 60 010701 (in Chinese) [姜洪源, 任玉坤, 陶冶 2011 60 010701]
[26]	Ren Y K 2011 Ph. D. Dissertation (Harbin: Harbin Institute of Technology) (in Chinese) [任玉坤 2011 博士学位论文(哈尔滨: 哈尔滨工业大学)]

施引文献

[1]	Ren Y K, Ao H R, Gu J Z, Jiang H Y, Antonio R 2009 Acta Phys. Sin. 58 7869 (in Chinese) [任玉坤, 敖宏瑞, 顾建忠, 姜洪源, Antonio R 2009 58 7869]
[2]	Morgan H, Green N G 2003 AC Electrokinetics: Colloids and Nanoparticles (Beijing: Higher Education Press) p119
[3]	Morales M C, Lin H, Zahn J D 2012 Lab. Chip. 12 99
[4]	Zhu X L, Yin Z F, Gao Z Q, Ni Z H 2010 Sci. China: Tech. Sci. 53 2388
[5]	Yasukawa T, Suzuki M, Shiku H, Matsue T 2009 Sens. Actuator. B: Chem. 142 400
[6]	Jones T B 1995 Electromechanics of Particles (New York: Cambridge University Press)
[7]	Desai A, Lee S W, Tai C Y 1999 Sens. Actuator. A: Phys. 73 37
[8]	Reichle C, Muller T, Schnelle T, Fuhr G 1999 J. Phys. D: Appl.Phys. 32 2128
[9]	Zimmermann D, Zhou A, Kiesel M, Feldbauer K, Terpitz U, Haase W, Schneider-Hohendorf T, Bamberg E, Sukhorukov V L 2008 Biochem. Biophys. Res. Commun. 369 1022
[10]	Reichle C, Muller T, Schnelle T, Fuhr G 1999 J. Phys. D: Appl.Phys. 32 2128
[11]	Jiang H Y, Ren Y K, Han X J, Tao Y, Li S S 2011 Sci. China: Tech. Sci. 54 643
[12]	Hermanson K D, Lumsdon S O, Williams J P, Kaler E W, Velev O D 2001 Science 294 1082
[13]	Ren Y K, Tao Y, Hou L K, Jiang H Y 2013 Chin. Phys. B 22 087701
[14]	Jiang H Y, Ren Y K, Tao Y 2011 Chin. Phys. B 20 057701
[15]	Mayya K S, Schoeler B, Caruso F 2003 Adv. Funct. Mater. 13 183
[16]	Lim J K, Eggeman A, Lanni F, Tilton R D, Majetich S A 2008 Adv. Mater. 20 1721
[17]	Gangwal S, Gayre O J, Bazant M Z, Velev O D 2008 Phys. Rev. Lett. 100 058302
[18]	Grosse C, Shilov V N 1996 J. Phys. Chem. 100 1771
[19]	Ren Y K, Morganti D, Jiang H Y, Ramos A, Morgan H 2011 Langmuir 27 2128
[20]	Lorenz H, Despont M, LaBianca N, Renaud P, Vettiger P 1997 J. Micromech. Microeng. 7 121
[21]	Morganti D, Morgan H 2011 Colloid. Surf. A: Phys. 376 67
[22]	Rose K A, Meier J A, Dougherty G M, Santiago J G 2007 Phys. Rev. E 75 011503
[23]	García-Sanchez P, Ren Y K, Arcenegui J J, Morgan H, Ramos A 2012 Langmuir 28 13861
[24]	Minoura I, Muto E 2006 Biophysi. J. 90 3739
[25]	Jiang H Y, Ren Y K, Tao Y 2011 Acta Phys. Sin. 60 010701 (in Chinese) [姜洪源, 任玉坤, 陶冶 2011 60 010701]
[26]	Ren Y K 2011 Ph. D. Dissertation (Harbin: Harbin Institute of Technology) (in Chinese) [任玉坤 2011 博士学位论文(哈尔滨: 哈尔滨工业大学)]

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