Entropic Splitter for Particle Separation

被引：148

作者：

Reguera, D. ^{[1
]}

Luque, A. ^{[1
]}

Burada, P. S. ^{[2
]}

Schmid, G. ^{[3
]}

Rubi, J. M. ^{[1
]}

Haenggi, P. ^{[3
]}

机构：

[1] Univ Barcelona, Dept Fis Fonamental, Fac Fis, E-08028 Barcelona, Spain

[2] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany

[3] Univ Augsburg, Inst Phys, D-86135 Augsburg, Germany

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 108卷 / 02期

关键词：

DNA ELECTROPHORESIS; BROWNIAN PARTICLES; TRANSPORT; RATCHET;

D O I：

10.1103/PhysRevLett.108.020604

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a particle separation mechanism which induces the motion of particles of different sizes in opposite directions. The mechanism is based on the combined action of a driving force and an entropic rectification of the Brownian fluctuations caused by the asymmetric form of the channel along which particles proceed. The entropic splitting effect shown could be controlled upon variation of the geometrical parameters of the channel and could be implemented in narrow channels and microfluidic devices.

引用

页数：5

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