基于光诱导电渗流的碳纳米颗粒自动化装配  

Study on automatic assembly of CNPs based on light induced ACEO

作　　者：梁文峰[1,2] 曲艳丽[1] 董再励[1] 

机构地区：[1]中国科学院沈阳自动化研究所机器人学国家重点实验室,沈阳110016 [2]中国科学院研究生院,北京100049

出　　处：《电子测量与仪器学报》2011年第11期935-939,共5页Journal of Electronic Measurement and Instrumentation

基　　金：国家自然科学基金(编号:61107043)资助项目;机器人学国家重点实验室自主课题(编号:2009-Z02)资助项目

摘　　要：碳纳米颗粒作为一种新颖的纳米材料,在生物医学以及工业领域等具有重要应用价值。然而如何自动化的操控以及装配碳纳米颗粒仍然是难题。为此,文中提出了一种将光诱导交流电渗流应用于碳纳米颗粒的自动化装配的新方法。在分析了光诱导非均匀电场环境下碳纳米颗粒纳观尺度受力的基础上,率先建立了光诱导交流电渗流的滑移速度理论模型以及驱动交流电压频率模型,并利用有限元仿真软件Comsol Multiphysics仿真分析了光诱导交流电渗流的在整个空间的速度场分布,获得了光诱导交流电渗流起主导作用的有效频率范围,并得到其最优交流电压驱动频率为1 kHz,进而对操作机理进行了深入解释。50 nm碳颗粒的装配实验结果证明,光诱导交流电渗流方法可以成功应用于碳纳米颗粒的自动化操控与装配。同时,实验结果还表明光诱导交流电渗流方法在3D纳米结构以及纳米器件构建方面具有重要的应用前景。As a novel nano material with unique nanostructure and properties, carbon nano-particles （CNPs） show a great potential for biomedical and industry applications. However, how to automatically manipulate and assemble the CNPs is still very challenging. In this paper, a new method for automatic assembly of CNPs was proposed by utilizing light induced AC electro-osmotic （LI-ACEO）. Based on the theoretical analysis of nano scale kinetics of CNPs in a non-uniform electrical field, the theoretical models of the slip velocity and the frequency range of the applied AC voltage were established and derived. Furthermore, the entire spatial distribution of the velocity caused by the LI-ACEO was simulated utilizing a commercial finite element simulation software Comsol Multiphysics. The optimal frequency of 1 kHz for the LI-ACEO manipulation was determined, and the mechanism of LI-ACEO was discussed in detail. The experimental results of 50nm CNPs proved that LI-ACEO is very effective for automatic manipulation and assembly of CNPs. The LI-ACEO also shows important potential for CNPs-based 3D nano structure and nano device building.

关 键 词：碳纳米颗粒 自动化装配 有限元仿真 光诱导电渗流 

分 类 号：TN16[电子电信—物理电子学]