Diffusion of a Brownian ellipsoid in a force field

被引：13

作者：

Aurell, Erik ^{[1
,2
,3
,4
]}

Bo, Stefano ^{[5
,6
]}

Dias, Marcelo ^{[5
,6
,7
]}

Eichhorn, Ralf ^{[5
,6
]}

Marino, Raffaele ^{[5
,6
]}

机构：

[1] AlbaNova Univ Ctr, Dept Computat Biol, SE-10691 Stockholm, Sweden

[2] AlbaNova Univ Ctr, Ctr Quantum Mat, KTH Royal Inst Technol, SE-10691 Stockholm, Sweden

[3] Aalto Univ, Dept Informat & Comp Sci, Espoo, Finland

[4] Aalto Univ, Dept Appl Phys, Espoo, Finland

[5] Royal Inst Technol, NORDITA, Roslagstullsbacken 23, SE-16091 Stockholm, Sweden

[6] Stockholm Univ, Roslagstullsbacken 23, SE-16091 Stockholm, Sweden

[7] Aalto Univ, Sch Sci, Aalto Sci Inst, FI-02150 Espoo, Finland

来源：

EPL | 2016年 / 114卷 / 03期

关键词：

RIGID PARTICLES; ARBITRARY SHAPE; MOTION;

D O I：

10.1209/0295-5075/114/30005

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We calculate the effective long-term convective velocity and dispersive motion of an ellipsoidal Brownian particle in three dimensions when it is subjected to a constant external force. This long-term motion results as a "net" average behavior from the particle rotation and translation on short time scales. Accordingly, we apply a systematic multi-scale technique to derive the effective equations of motion valid on long times. We verify our theoretical results by comparing them to numerical simulations. Copyright (C) EPLA, 2016

引用

页数：6

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