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A magnetically driven PDMS peristaltic micropump.

Tingrui Pan1, Eleanor Kai, Matthew Stay

  • 1Dept. of Electr. & Comput. Eng., Minnesota Univ., Minneapolis, MN, USA.

Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference
|February 3, 2007
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We developed a low-cost polydimethylsiloxane (PDMS) peristaltic micropump using magnetic actuation. This robust device achieves a flow rate of 24 µL/min with low power consumption, suitable for microfluidic applications.

Area of Science:

  • Microfluidics
  • Biomedical Engineering
  • Materials Science

Background:

  • Micropumps are essential for precise fluid handling in microfluidic devices.
  • Existing micropumps often face challenges with cost, complexity, or power consumption.
  • Developing low-cost, efficient micropumps is crucial for advancing lab-on-a-chip technologies.

Purpose of the Study:

  • To design and fabricate a robust, low-cost peristaltic micropump using polydimethylsiloxane (PDMS).
  • To implement a magnetic actuation system for generating peristaltic motion.
  • To evaluate the performance characteristics of the developed micropump.

Main Methods:

  • Fabrication using soft molding and bonding of three PDMS layers.
  • Integration of a microchannel, actuation membrane, and magnetic rods (Ni-plated-NdFeB).

Related Experiment Videos

  • Utilizing a DC motor with mounted magnets to drive the actuation membrane magnetically.

    • Main Results:

    • Demonstrated a maximum pumping rate of approximately 24 µL/min at 1700 rpm.
    • Achieved low power consumption of 11 mW.
    • Preliminary numerical analysis confirmed characteristic membrane deflection and fluid flow patterns.

    Conclusions:

    • The developed PDMS peristaltic micropump offers a robust and cost-effective solution for microfluidic fluid transport.
    • Magnetic actuation provides an efficient mechanism for generating the peristaltic waveform.
    • The micropump shows potential for various microfluidic applications requiring precise and low-power fluid delivery.