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题名:
Brownian dynamics of the optically trapped spinning microparticles in low pressures
作者: Lang, Mengjiao1; Xiong, Wei1; Xiao, Guangzong1,2; Han, Xiang1; Tang, Jianxun1
出版日期: 2017
会议名称: Applied Optics and Photonics China: Optoelectronics and Micro/Nano-Optics, AOPC 2017
会议日期: 2017-06-04
会议地点: Beijing, China
DOI: 10.1117/12.2284450
通讯作者: Xiao, Guangzong (xiaoguangzong@nudt.edu.cn)
英文摘要:

Optical trap has become a powerful tool of biology and physics, since it has some useful functions such as optical rotator, optical spanner and optical binding. We present the translational motions in the transverse plane of a 4.4μm-diameter vaterite particle which is optically trapped in low pressures utilizing the Monte-Carlo method. We find that the air pressure around the microparticle plays an important part in the determination of dynamics of the trapped particle. According to the energy equipartition theorem, the position fluctuations of the optically trapped particle satisfy Maxwell-Bolzmann distributions. We present the features of particles' displacements and velocities changing with air pressures in detail, and find that the modulation of the trap stiffness makes a higher position variance. The mechanical quality factor Q larger than 10 induces a high peak of power spectral density. Our research presents a powerful tool towards further discovery of dynamical characteristics of optically trapped Brownian particles in low air pressures. © 2017 SPIE.

收录类别: EI ; ISTP
会议录: AOPC 2017: Optoelectronics and Micro/Nano-Optics
会议录出版者: SPIE
语种: 英语
作者部门: 瞬态光学技术国家重点实验室
卷号: 10460
产权排序: 2
ISBN号: 9781510614017
ISSN号: 0277786X
Citation statistics:
内容类型: 会议论文
URI标识: http://ir.opt.ac.cn/handle/181661/29866
Appears in Collections:瞬态光学技术国家重点实验室_会议论文

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作者单位: 1.College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha; 410073, China
2.State Key Laboratory of Transient Optics and Photonic, Chinese Academy of Sciences, Xian; 710068, China

Recommended Citation:
Lang, Mengjiao,Xiong, Wei,Xiao, Guangzong,et al. Brownian dynamics of the optically trapped spinning microparticles in low pressures[C]. 见:Applied Optics and Photonics China: Optoelectronics and Micro/Nano-Optics, AOPC 2017. Beijing, China. 2017-06-04.
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