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Proceedings Paper

Simple passive micromixer using recombinant multiple flow streams
Author(s): Joon Sub Shim; Irena Nikcevic; Michael J. Rust; Ali Asgar S. Bhagat; William R. Heineman; Carl J. Seliskar; Chong H. Ahn; Ian Papautsky
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Paper Abstract

A passive microfluidic mixer with high performance is designed and fabricated in this work. Diamond-shaped obstacles were chosen to split the flow into several streams, which are then guided back together after the obstacle. To keep pressure drop low, the channel cross-sectional area was maintained equal to the input cross-sectional area, and this was held constant throughout the device. The proposed design was modeled using computational fluid dynamics (CFD) software. The effects of channel width, channel length, location of obstructions, and Reynolds Number (Re) were investigated. The simulated results were verified experimentally. Simulation data showed that the designed micromixer achieved 90% mixing at a channel length of 4.35 mm with pressure drop of 584 Pa at Re = 1, while experimental data for Re = 0.1 showed 90% mixing at 7 mm. The mixer functions well especially at the low Re (Re = 0.1).

Paper Details

Date Published: 22 January 2007
PDF: 8 pages
Proc. SPIE 6465, Microfluidics, BioMEMS, and Medical Microsystems V, 64650Y (22 January 2007); doi: 10.1117/12.701977
Show Author Affiliations
Joon Sub Shim, Univ. of Cincinnati (United States)
Irena Nikcevic, Univ. of Cincinnati (United States)
Michael J. Rust, Univ. of Cincinnati (United States)
Ali Asgar S. Bhagat, Univ. of Cincinnati (United States)
William R. Heineman, Univ. of Cincinnati (United States)
Carl J. Seliskar, Univ. of Cincinnati (United States)
Chong H. Ahn, Univ. of Cincinnati (United States)
Ian Papautsky, Univ. of Cincinnati (United States)


Published in SPIE Proceedings Vol. 6465:
Microfluidics, BioMEMS, and Medical Microsystems V
Ian Papautsky; Wanjun Wang, Editor(s)

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