Non-Gaussian statistics for the motion of self-propelled Janus particles: Experiment versus theory

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	Non-Gaussian statistics for the motion of self-propelled Janus particles: Experiment versus theory
	Zheng X(郑旭); ten Hagen B; Kaiser A; Wu ML; Cui HH; Silber-Li ZH(李战华); Lowen H
刊名	PHYSICAL REVIEW E
	2013-09-18
通讯作者邮箱	lili@imech.ac.cn
卷号	88 期号:3 页码:032304/1-032304/11
关键词	Janus particles Self-propulsion Brownian motion Non-Gaussian behavior Microfluidic
ISSN号	1539-3755
通讯作者	Zheng, X (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
产权排序	[Zheng, Xu; Silber-Li, Zhanhua] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; [ten Hagen, Borge; Kaiser, Andreas; Loewen, Hartmut] Univ Dusseldorf, Inst Theoret Phys Weiche Mat 2, D-40225 Dusseldorf, Germany; [Wu, Meiling; Cui, Haihang] Xian Univ Architecture & Technol, Xian 710055, Peoples R China
合作状况	国际
中文摘要	Spherical Janus particles are one of the most prominent examples for active Brownian objects. Here, we study the diffusiophoretic motion of such microswimmers in experiment and in theory. Three stages are found: simple Brownian motion at short times, superdiffusion at intermediate times, and finally diffusive behavior again at long times. These three regimes observed in the experiments are compared with a theoretical model for the Langevin dynamics of self-propelled particles with coupled translational and rotational motion. Besides the mean square displacement also higher displacement moments are addressed. In particular, theoretical predictions regarding the non-Gaussian behavior of self-propelled particles are verified in the experiments. Furthermore, the full displacement probability distribution is analyzed, where in agreement with Brownian dynamics simulations either an extremely broadened peak or a pronounced double-peak structure is found, depending on the experimental conditions.
学科主题	物理力学
分类号	一类
收录类别	SCI ; EI
资助信息	National Natural Science Foundation of China [11272322, 11202219, 21005058]; ERC Advanced Grant INTERCOCOS [267499]; DFG [SFB TR6]
原文出处	http://dx.doi.org/10.1103/PhysRevE.88.032304
语种	英语
WOS记录号	WOS:000324541800006
公开日期	2013-10-23
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/47495]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Zheng X,ten Hagen B,Kaiser A,et al. Non-Gaussian statistics for the motion of self-propelled Janus particles: Experiment versus theory[J]. PHYSICAL REVIEW E,2013,88(3):032304/1-032304/11.
APA	Zheng X.,ten Hagen B.,Kaiser A.,Wu ML.,Cui HH.,...&Lowen H.(2013).Non-Gaussian statistics for the motion of self-propelled Janus particles: Experiment versus theory.PHYSICAL REVIEW E,88(3),032304/1-032304/11.
MLA	Zheng X,et al."Non-Gaussian statistics for the motion of self-propelled Janus particles: Experiment versus theory".PHYSICAL REVIEW E 88.3(2013):032304/1-032304/11.