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题名: Anomalous boundary deformation induced by enclosed active particles
作者: Tian, WD ;  Gu, Y ;  Guo, YK ;  Chen, K
刊名: CHINESE PHYSICS B
出版日期: 2017
卷号: 26, 期号:10, 页码:100502
关键词: self-propelled particles ;  boundary ;  active matter ;  c onfinement
学科分类: Physics
DOI: http://dx.doi.org/10.1088/1674-1056/26/10/100502
通讯作者: Tian, WD ;  Chen, K (reprint author), Soochow Univ, Coll Phys Optoelect & Energy, Ctr Soft Condensed Matter Phys & Interdisciplinar, Suzhou 215006, Peoples R China. ;  Tian, WD ;  Chen, K (reprint author), Chinese Acad Sci, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China.
文章类型: Article
英文摘要: We simulate a two-dimensional model of a round soft boundary enclosed with self-propelled particles. Persistent motion drives these particles to accumulate near the boundary, thereby dramatically deforming the boundary shape through collisions. Quantitative analyses of the boundary shape and the particle distribution show that there are two typical regimes in the variation of the morphology with the increase of self-propulsion of particles. One is under small forces, characterized by the radially inhomogeneous distribution of particles and the suppression of local fluctuations of the almost round boundary, and the other is under large forces, featured by the angularly inhomogeneous distribution of particles and the global shape deformation of the boundary. These two features are strongly cooperative. We also find different mechanisms in the particle relocation at low and high particle concentrations.
类目[WOS]: Physics, Multidisciplinary
关键词[WOS]: BACTERIA ;  MOTORS
项目资助者: National Natural Science Foundation of China [21474074, 21674078, 21374073, 21574096]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21954
Appears in Collections:理论物理所2017年知识产出_期刊论文

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Recommended Citation:
Tian, WD,Gu, Y,Guo, YK,et al. Anomalous boundary deformation induced by enclosed active particles[J]. CHINESE PHYSICS B,2017,26(10):100502.
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