旋转电场驱动纳米金属线运动研究  

Study on the Motion of Nano-Metal-Wires by Rotation Electric Field

作　　者：杨胡坤 王建萍[1] 董康兴 Yang Hukun;Wang Jianping;Dong Kangxing(College of Mechanical and Electronic Engineering,Chaohu University,Hefei 238000,China;College of Mechanical Science and Engineering,Northeast Petroleum University,Daqing 163318,China)

机构地区：[1]巢湖学院机械与电子工程学院,合肥238000 [2]东北石油大学机械科学与工程学院,黑龙江大庆163318

出　　处：《微纳电子技术》2018年第11期783-788,共6页Micronanoelectronic Technology

基　　金：安徽省教育厅重大项目(KJ2018ZD045);巢湖学院博士启动基金资助项目(KYQD-201709);东北石油大学校培育基金资助项目(NEPUPY-1-12)

摘　　要：为探索纳米金属线在旋转电场作用下的运动特征,研究在旋转电场电压幅值一定、不同频率条件下,纳米金属线在不同电导率KCl溶液中的转速。选取长度为6~7μm、半径为0.025μm的纳米金属线为研究对象,实验测量其转速特性。并对纳米金属线在电场作用下表面极化、电偶矩的形成、旋转扭矩的产生等进行理论分析,在COMSOL环境下对无量纲极化率进行仿真分析,并对纳米线转速进行理论仿真计算。实验及理论仿真研究表明：在电场强度一定、不同电导率溶液中,随着旋转电场频率的增大,纳米金属线的转速先增大后减小,转速峰值可达1.2 r/min,两者结果具有较好的一致性,验证了理论分析模型的正确性,为进一步研究纳米金属线的旋转运动机制提供了实验及理论研究基础。In order to explore the motion characteristic of the nano-metal-wire（NMW）under a rotation electric field,the rotation speeds of the NMW in KCl solutions with different conductivities were studied under the conditions of constant voltage amplitude and different frequencies of the rotation electric field.The rotation speed of the NMW with the length of 6-7μm and the radius of 0.025μm was measured experimentally.Furthermore,the surface polarization,formation of electric couple moment and generation of rotational torque of the NMW were analyzed theoretically under the electric field.Using the COMSOL software,the dimensionless polarizability was simulated and analyzed,and the rotation speed of the NMW was simulated and calculated.The experiment and theoretical simulation results show that under the conditions of the constant electric field and different conductivity electrolytes,the rotation speed of the NMW increases firstly and then decreases with the increase of the rotation electric field frequency,the peak value of the rotation speed can reach 1.2 r/min.The experiment and simulation results have good consistency,verifying the correctness of the theoretical analysis model,and providing experimental and theoretical research basis for further studying the rotational motion mechanism of the NMW.

关 键 词：旋转电场 电导率 转速 电偶矩 极化率 

分 类 号：TB383[一般工业技术—材料科学与工程]