基于光诱导介电泳原理的粒子操纵研究  

Micro-particle Manipulation Based on Optically-induced Dielectrophoresis

作　　者：杨德超[1] 赵宇[1] 张文栋[1,2] 薛晨阳[1,2] 闫树斌[1] 

机构地区：[1]中北大学仪器科学与动态测试教育部重点实验室,太原030051 [2]中北大学电子测试技术国家重点实验室,太原030051

出　　处：《科学技术与工程》2015年第3期120-123,130,共5页Science Technology and Engineering

摘　　要：理论分析了溶液电导率和粒子直径对光诱导介电泳力的影响,针对光诱导介电泳对微球的操纵机理进行建模仿真。设计了光诱导介电泳芯片,通过激发光电导层的光电效应形成虚拟电极,同时施加高频交流电压,实现了对4μm和10μm聚苯乙烯微球的介电泳力操纵。最终微球在负介电泳力的作用下分别以8.8μm/s和35μm/s的速度运动。通过光诱导介电泳实现了对微球的无接触无损伤的操纵。The effect of solution conductivity and particle diameter on the optically-induced dielectrophoresis（ ODEP） are analyzed theoretically,the control mechanism of ODEP to microspheres is modeled and simulated.The ODEP chip is manufactured,then the virtual electrode is designed by exciting the photoelectric effect of photoconductive film.At the same time,high frequency AC voltage is applied;polystyrene microspheres with diameter of4 μm and 10 μm can be manipulated.Microspheres move under the action of negative dielectrophoresis force at the speed of 8.8μm / s and 35μm / s,respectively.Non-contact,non-destructive manipulation of ODEP to microspheres has been achieved.

关 键 词：光诱导介电泳 虚拟电极 操纵 

分 类 号：TP271[自动化与计算机技术—检测技术与自动化装置]