幅度调制原子力显微镜仿真平台

大学物理 ›› 2011, Vol. 30 ›› Issue (7): 51-51.

幅度调制原子力显微镜仿真平台

李小凤[1] 蒋沙汝[1] 朱丽媛[1] 钱建强[2] 李渊[2] 李英姿[2]

[1]北京航空航天大学数学与系统科学学院,北京100191 [2]北京航空航天大学应用物理系,北京100191

出版日期:2011-07-25 发布日期:2011-07-20

A simulation platform for amplitude modulation atomic force microscope

Online:2011-07-25 Published:2011-07-20

摘要/Abstract

摘要： 基于欧拉-伯努利模型,对幅度调制原子力显微镜（AM-AFM）进行建模,采用PID控制器进行反馈控制,建立了一套幅度调制原子力显微镜仿真平台.仿真结果表明,该平台准确地模拟了AM-AFM探针接近样品和扫描样品的过程中探针的运动状态及AM-AFM的工作系统,可作为大学生做原子力显微镜实验的辅助工具,使学生对AM-AFM的工作特性有一个更深刻的了解,并对AM-AFM的实际操作有一个初步的体验.

关键词: 幅度调制原子力显微镜, AM-AFM仿真平台, 欧拉-伯努利方程, PID控制

Abstract: The model of amplitude modulation atomic force microscope（AM-AFM） probe dynamic process is obtained by the Euler-Bernoulli equation.Based on AM-AFM＇s negative feedback control system with a PID controller,a simulation platform for AM-AFM is established.The simulation results show that the platform can accurately reflect the dynamic characteristic when the probe approaches and scans the sample.In consequence,for students doing the AM-AFM experiment,the platform can be used as an effective tool,which helps the students to have a deeper understanding on the AM-AFM,as well as a tentative experience before practice.

Key words: amplitude modulation atomic force microscope, AM-AFM simulation platform, Euler-Bernoulli equation, PID control

中图分类号:

TP391.9

李小凤[] 蒋沙汝[] 朱丽媛[] 钱建强[] 李渊[] 李英姿[]. 幅度调制原子力显微镜仿真平台[J]. 大学物理, 2011, 30(7): 51-51.