Diffusion enhancement of Brownian motors revealed by a solvable model

被引：5

作者：

Kanada, Ryo ^{[1
,2
]}

Shinagawa, Ryota ^{[3
]}

Sasaki, Kazuo ^{[3
]}

机构：

[1] Kyoto Univ, Grad Sch Sci, Dept Biophys, Kyoto 6068502, Japan

[2] RIKEN, Cluster Sci Technol & Innovat Hub, Compass Hlth Life Res Complex Program, Chuo Ku, 6-7-1 Minatojima Minamimachi, Kobe, Hyogo 6500047, Japan

[3] Tohoku Univ, Grad Sch Engn, Dept Appl Phys, Sendai, Miyagi 9808579, Japan

来源：

PHYSICAL REVIEW E | 2018年 / 98卷 / 06期

基金：

日本科学技术振兴机构; 日本学术振兴会;

关键词：

TRANSPORT;

D O I：

10.1103/PhysRevE.98.062110

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

A solvable model is proposed and analyzed to reveal the mechanism underlying the diffusion enhancement recently reported for a model of molecular motors and predicted to be observed in the biological rotary motor F-1-ATPase. It turns out that the diffusion enhancement for the present model can approximately be described by a random walk in which the waiting time for a step to occur is exponentially distributed and it takes nonzero time to proceed forward by the step. It is shown that the diffusion coefficient of such a random walk can significantly be increased when the average waiting time is comparable to the average stepping time.

引用

页数：11

共 21 条

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