Structure and dynamics of hydrodynamically interacting finite-size Brownian particles in a spherical cavity: Spheres and cylinders
文献类型：期刊论文
| 作者 | Li JY6; Jiang XK(蒋玺恺)5,6; Singh A6; Heinonen OG3,4; Hernandez-Ortiz JP1,2,6; de Pablo JJ4,6 |
| 刊名 | JOURNAL OF CHEMICAL PHYSICS
 |
| 出版日期 | 2020-05-29 |
| 卷号 | 152期号:20页码:11 |
| ISSN号 | 0021-9606 |
| DOI | 10.1063/1.5139431 |
| 通讯作者 | de Pablo, Juan J.(depablo@uchicago.edu) |
| 英文摘要 | The structure and dynamics of confined suspensions of particles of arbitrary shape are of interest in multiple disciplines from biology to engineering. Theoretical studies are often limited by the complexity of long-range particle-particle and particle-wall forces, including many-body fluctuating hydrodynamic interactions. Here, we report a computational study on the diffusion of spherical and cylindrical particles confined in a spherical cavity. We rely on an immersed-boundary general geometry Ewald-like method to capture lubrication and long-range hydrodynamics and include appropriate non-slip conditions at the confining walls. A Chebyshev polynomial approximation is used to satisfy the fluctuation-dissipation theorem for the Brownian suspension. We explore how lubrication, long-range hydrodynamics, particle volume fraction, and shape affect the equilibrium structure and the diffusion of the particles. It is found that once the particle volume fraction is greater than 10%, the particles start to form layered aggregates that greatly influence particle dynamics. Hydrodynamic interactions strongly influence the particle diffusion by inducing spatially dependent short-time diffusion coefficients, stronger wall effects on the particle diffusion toward the walls, and a sub-diffusive regime-caused by crowding-in the long-time particle mobility. The level of asymmetry of the cylindrical particles considered here is enough to induce an orientational order in the layered structure, decreasing the diffusion rate and facilitating a transition to the crowded mobility regime at low particle concentrations. Our results offer fundamental insights into the diffusion and distribution of globular and fibrillar proteins inside cells. |
| 分类号 | 二类 |
| WOS关键词 | GREEN FLUORESCENT PROTEIN ; PLANE PARALLEL BOUNDARIES ; CREEPING MOTION ; DIFFUSION ; CONFINEMENT ; REVOLUTION ; FLUID ; BODY ; FLOW |
| 资助项目 | Department of Energy, Basic Energy Sciences, Division of Materials Research, through the MICCoM center ; Department of Energy, Basic Energy Sciences, Division of Materials Research, through the AMEWS center |
| WOS研究方向 | Chemistry ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000537898900005 |
| 资助机构 | Department of Energy, Basic Energy Sciences, Division of Materials Research, through the MICCoM center ; Department of Energy, Basic Energy Sciences, Division of Materials Research, through the AMEWS center |
| 其他责任者 | de Pablo, Juan J. |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/82119]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Univ Nacl Colombia, Colombia Wisconsin One Hlth Consortium, Medellin, Colombia 2.Univ Nacl Colombia, Dept Mat & Nanotecnol, Sede Medellin, Medellin, Colombia; 3.Northwestern Argonne Inst Sci & Engn, Evanston, IL 60208 USA; 4.Argonne Natl Lab, Mat Sci Div, Lemont, IL 60439 USA; 5.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 6.Univ Chicago, Pritzker Sch Mol Engn, Chicago, IL 60637 USA; |
| 推荐引用方式 GB/T 7714 | Li JY,Jiang XK,Singh A,et al. Structure and dynamics of hydrodynamically interacting finite-size Brownian particles in a spherical cavity: Spheres and cylinders[J]. JOURNAL OF CHEMICAL PHYSICS,2020,152(20):11. |
| APA | Li JY,蒋玺恺,Singh A,Heinonen OG,Hernandez-Ortiz JP,&de Pablo JJ.(2020).Structure and dynamics of hydrodynamically interacting finite-size Brownian particles in a spherical cavity: Spheres and cylinders.JOURNAL OF CHEMICAL PHYSICS,152(20),11. |
| MLA | Li JY,et al."Structure and dynamics of hydrodynamically interacting finite-size Brownian particles in a spherical cavity: Spheres and cylinders".JOURNAL OF CHEMICAL PHYSICS 152.20(2020):11. |
入库方式： OAI收割
来源：力学研究所
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