Rectified motion of colloids in asymmetrically structured channels

被引：111

作者：

Marquet, C

Buguin, A

Talini, L

Silberzan, P

机构：

[1] Inst Curie, Sect Rech, UMR CNRS IC 168, F-75231 Paris 05, France

[2] Univ Orsay, FAST, UMR CNRS 7608, F-91405 Orsay, France

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.88.168301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We set micron size particles into macroscopic motion by submitting them to a low frequency electric field (of zero mean value) in a microfabricated channel exhibiting a topological ratchetlike local polarity. Rectification is induced by the coupling between electrophoresis, electroosmosis, and dielectrophoresis. The macroscopic velocities of the particles are functions of the electric field and of the geometry of the channel; they strongly depend on their size which opens the way to potential separations.

引用

页码：4 / 168301

页数：4

共 26 条

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