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AC Electrothermal Pumping for Medical Applications

[+] Author Affiliations
Nazmul Islam

The University ot Texas at Brownsville, Brownsville, TX

Paper No. IMECE2013-65315, pp. V010T11A054; 2 pages
  • ASME 2013 International Mechanical Engineering Congress and Exposition
  • Volume 10: Micro- and Nano-Systems Engineering and Packaging
  • San Diego, California, USA, November 15–21, 2013
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5639-0
  • Copyright © 2013 by ASME


While AC electroosmosis (AC-EO) micropumps have advantages of easy implementation and compatibility with microchip fabrication, it has been observed that the pumping rate is decreased for high conductive bio-fluids [1]. To expand our applications to biomedical area we propose here the AC electrothermal (ACET) effect, which can also improve the pumping rate by multiple fold compare to AC-EO. When utilized in biomedical applications, these micropumps can be used to administer small amounts of medication (e.g. insulin) at regular time intervals. ACET generates temperature gradients in the fluids, and consequently induces space charges that move in electric fields and produce microflows. To demonstrate the fluid manipulation in high conductive bio-fluids, we have developed an AC electrothermal micropump using asymmetrical electrode arrays.

Copyright © 2013 by ASME
Topics: Biomedicine



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