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Proceedings Paper

Development of a diffuser/nozzle-type micropump based on magnetohydrodynamic (MHD) principle
Author(s): Khee-Hang Heng; Lei Huang; Wanjun Wang; Michael C. Murphy
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Paper Abstract

This paper reports a research effort to microfabricate a nozzle-diffuser type of micropumps based on the magnetohydrodynamic (MHD) principle using LIGA technologies. The micropump is driven using the Lorentz force and can be used to deliver electrically conductive fluids. The major advantage of a MHD-based micropump is that it does not contain any moving parts. It may have potential applications in medicine delivery, biological and biomedical studies. Prototypes of MHD micropumps have been fabricated and tested. Significant bubble generation was observed due to electrolysis effect. These bubbles made the flow two-phase one and resulted in flow rate reduction. To overcome bubble generation, a new generation of MHD micropumps is currently under development. This new, diffuser/nozzle type of the MHD micropumps is based on the similar design as widely used in the diffuser/nozzle pumps with diaphragm.

Paper Details

Date Published: 19 August 1999
PDF: 8 pages
Proc. SPIE 3877, Microfluidic Devices and Systems II, (19 August 1999); doi: 10.1117/12.359355
Show Author Affiliations
Khee-Hang Heng, Louisiana State Univ. (United States)
Lei Huang, Louisiana State Univ. (United States)
Wanjun Wang, Louisiana State Univ. (United States)
Michael C. Murphy, Louisiana State Univ. (United States)

Published in SPIE Proceedings Vol. 3877:
Microfluidic Devices and Systems II
Chong Hyuk Ahn; A. Bruno Frazier, Editor(s)

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