大学物理 ›› 2005, Vol. 24 ›› Issue (9): 7-7.

• 著者文摘 • 上一篇    下一篇

光阱中布朗粒子动力学分析

喻有理 张孝林 王小力   

  1. 西安交通大学理学院,陕西西安,710049
  • 出版日期:2005-09-25 发布日期:2005-09-20

Dynamic analysis for a Brownian particle in optical trap

  • Online:2005-09-25 Published:2005-09-20

摘要: 通过对光阱中的布朗粒子进行动力学方程求解,由解的结果分析得到观测系统的性能要求.结果表明:光阱中布朗颗粒服从Boltzmann分布;对其运动的观测需要纳米量级的空间分辨率和毫秒量级的时间分辨率.

关键词: 光镊, 布朗粒子, 简谐势, 玻尔兹曼分布

Abstract: By solving the dynamical equation of a Brownian particle in a optical trap and analyzing the solutions, characteristics of the position measuring system can be obtained. Results indicate that the Brownian particle obeys Boltzmann distribution; in order to measure the motion, the order of nanometer spatial and millisecond temporal resolutions are necessary.

Key words: optical tweezer, Brownian particle, harmonic potential, Boltzmann distribution

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  • O439