摄像显微技术在微纳马达体系研究中的应用  

Application of video microscopy in probing structures and dynamics of micromotor systems

作　　者：王颖[1] 王华光[2] 张泽新[2] WANG Ying WANG HuaGuang ZHANG ZeXin(Analytical and Testing Center, Soochow University, Suzhou 215123, China Center for Soft Condensed Matter Physics and Interdisciplinary Research, Soochow University, Suzhou 215006, China)

机构地区：[1]苏州大学分析测试中心,苏州215123 [2]苏州大学软凝聚态物理及交叉研究中心,苏州215006

出　　处：《科学通报》2017年第2期186-193,共8页Chinese Science Bulletin

基　　金：国家重点基础研究发展计划(2012CB821500);国家自然科学基金(21174101;11574222)资助

摘　　要：摄像显微技术是在实空间上研究微纳马达体系结构和动力学不可或缺的重要实验手段.通过摄像显微技术,人们可以对微纳马达体系进行直接观察和记录,并且可以对显微图像进行定量的分析从而精准地研究体系的结构与动力学.本文概述了摄像显微的实验技术和数据处理方法,介绍了利用摄像显微技术在微纳马达体系研究中的应用进展.Video microscopy has become an essential, real space experiment technique to study the structural and dynamical properties of microscopic particulate systems. On the one hand, video microcopy can be used to directly observe and record such particulate systems. On the other hand, combined with particle tracking technique, video microscopy enables quantitatively analysis of video data, and further calculation of the structures and dynamics of the studied microscopic systems. For example, video microscopy has been widely used in soft matter physics research. With the advantage of single particle resolution and the capability of longtime recording, video microscopy has led to great advances in our understudying of fundamental condensed matter physics phenomena such as crystallization, melting and glass transition. This paper reviews the applications of video microscopy in studying structures and dynamics of micromotor systems. Firstly, the experimental technique of the video microscopy is summarized. We introduce the hardware of video microscopy, which includes an optical microscope, a video camera and a personal computer. The video camera attached to the microscope records videos and the videos are stored in the computer for future image analysis. Then, the procedures of image analysis are detailed. Various methods to determine the positions of microscopic particles, i.e., particle tracking algorithms, are outlined. Suggestions on video acquisition are also discussed to enable better image analysis and particle tracking. The typical physical parameters to quantify the structures and dynamics of micromotor systems, such as radial distribution function g（r） and mean square displacement （MSD）, are introduced. Secondly, recent progress of the applications of video microscopy in micromotor systems are reviewed. Micromotors can move autonomously because they can convert chemical or other forms of energy （magnetic, electrical, photo- chemical, acoustic, thermal） to mechanical movement. Micromotors have att

关 键 词：摄像显微镜 微纳马达 结构 动力学 

分 类 号：TB383.1[一般工业技术—材料科学与工程] TH742[机械工程—光学工程]