Anomalous boundary deformation induced by enclosed active particles
Anomalous boundary deformation induced by enclosed active particles
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封闭活性粒子引起的异常边界变形
DOI：
10.1088/1674-1056/26/10/100502
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发表时间：
2017-09
影响因子：
1.7
通讯作者：
Chen Kang
中科院分区：
文献类型：
--
作者：
Tian Wen-De;Gu Yan;Guo Yong-Kun;Chen Kang
我们模拟了一个由自驱动粒子包围的圆形软边界的二维模型。持续运动驱使这些粒子在边界附近聚集，从而通过碰撞使边界形状急剧变形。边界形状和颗粒分布的定量分析表明，随着颗粒自推进力的增加，形貌变化有两种典型的规律。一种是在小力作用下，其特点是颗粒径向分布不均匀，抑制近圆形边界的局部涨落；另一种是在大力作用下，特点是颗粒在角度上不均匀分布，边界整体形状变形。这两个特征是强协作的。我们还发现低颗粒浓度和高颗粒浓度下颗粒重新定位的不同机制。
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.
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DOI：
10.1073/pnas.0910426107
发表时间：
2010-05-25
影响因子：
11.1
作者：
Di Leonardo, R.;Angelani, L.;Di Fabrizio, E.
通讯作者：
Di Fabrizio, E.
影响因子：
3.4
作者：
Xingbo Yang;M. Manning;M. Marchetti
通讯作者：
Xingbo Yang;M. Manning;M. Marchetti
影响因子：
56.9
作者：
Narayan, Vijay;Ramaswamy, Sriram;Menon, Narayanan
通讯作者：
Menon, Narayanan
影响因子：
3.2
作者：
H. Guidobaldi;Y. Jeyaram;C. Condat;M. Oviedo;I. Berdakin;V. Moshchalkov;L. Giojalas;A. Silhanek;V. Marconi
通讯作者：
H. Guidobaldi;Y. Jeyaram;C. Condat;M. Oviedo;I. Berdakin;V. Moshchalkov;L. Giojalas;A. Silhanek;V. Marconi
DOI：
10.1088/0305-4470/19/4/004
发表时间：
1986-03
期刊：
Journal of Physics A
影响因子：
--
作者：
J. Rudnick;G. Gaspari
通讯作者：
J. Rudnick;G. Gaspari