Patterning of flow and mixing in rotating radial microchannels

被引：88

作者：

Ducrée, J ^{[1
]}

Haeberle, S ^{[1
]}

Brenner, T ^{[1
]}

Glatzel, T ^{[1
]}

Zengerle, R ^{[1
]}

机构：

[1] Univ Freiburg, IMTEK, D-79110 Freiburg, Germany

来源：

MICROFLUIDICS AND NANOFLUIDICS | 2006年 / 2卷 / 02期

关键词：

D O I：

10.1007/s10404-005-0049-4

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We demonstrate how the speed of mixing under laminar conditions can be appreciably enhanced in concurrent centrifugal flows through straight, low-aspect-ratio microchannels pointing in radial direction in the plane of rotation. The convective mixing is driven by the inhomogeneous distribution of the velocity-dependent Coriolis pseudo force and the interaction of the so-induced transverse currents with the side walls. By investigating the key impact parameters, which are the geometry of the channels and the speed of rotation, it is shown that the contact surface between two laminar flows can be folded to shorten mixing times by up to two orders of magnitude!

引用

页码：97 / 105

页数：9

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