A magnetically driven PDMS micropump with micro-ball valves

Scott McDonald, Tingrui Pan, Babak Ziaie

Research output: Contribution to journalConference articlepeer-review

5 Scopus citations


In this paper, we present a novel robust PDMS membrane micropump with two one-way micro-ball valves for biomedical applications. The actuating membrane is driven by magnetic force of two miniature permanent magnets. The micropump consists of two PDMS layers, one holding the micro-ball valves and actuating chamber and the second holding the top magnet and covering the chamber and microvalves. A simple approach is used to fabricate a high performance micro-ball valve using an embedded Teflon microtube. A small DC motor (6mm in diameter and 15mm in length) with two permanent magnetic discs (NdFeB) mounted on its shaft is used to actuate the membrane-mounted magnet This configuration yields a large pumping rate with very low power consumption. Maximum pumping rate of 260μL/min was achieved at the input power of 21 mW, the highest pumping rate reported in the literature for micropumps at such power consumption.

Original languageEnglish (US)
Pages (from-to)2650-2653
Number of pages4
JournalAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Volume26 IV
StatePublished - Dec 1 2004
Externally publishedYes
EventConference Proceedings - 26th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2004 - San Francisco, CA, United States
Duration: Sep 1 2004Sep 5 2004


  • Micro-Ball Valve
  • Microfluidics
  • Micropump
  • PDMS
  • Soft Lithography

ASJC Scopus subject areas

  • Signal Processing
  • Biomedical Engineering
  • Computer Vision and Pattern Recognition
  • Health Informatics


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