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Issue 5, 2005
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A microfluidic mixer with grooves placed on the top and bottom of the channel

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Abstract

A new microfluidic mixer is presented consisting of a rectangular channel with grooves placed in the top and bottom. This not only increases the driving force behind the lateral flow, but allows for the formation of advection patterns that cannot be created with structures on the bottom alone. Chevrons, pointing in opposite directions on the top and bottom, are used to create a pair of vortices positioned side by side. Stripes running the width of the channel generate a pair of vertically stacked vortices. Computational fluid dynamics (CFD) simulations are used to model the behavior of the systems and provide velocity maps at cross-sections within the mixer. Experiments demonstrate the mixing that results when two segregated species enter the mixer side-by-side and pass through two cycles of the mixer (i.e., two alternating sets of four stripes and four chevrons).

Graphical abstract: A microfluidic mixer with grooves placed on the top and bottom of the channel

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Publication details

The article was received on 03 Dec 2004, accepted on 16 Mar 2005 and first published on 13 Apr 2005


Article type: Paper
DOI: 10.1039/B418243J
Citation: Lab Chip, 2005,5, 524-530
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    A microfluidic mixer with grooves placed on the top and bottom of the channel

    P. B. Howell, Jr., D. R. Mott, S. Fertig, C. R. Kaplan, J. P. Golden, E. S. Oran and F. S. Ligler, Lab Chip, 2005, 5, 524
    DOI: 10.1039/B418243J

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