Self-priming and bubble tolerant micropump

Guolin Xu; Francis E. H. Tay; Ciprian Iliescu; Vincent Luar

doi:10.1117/12.581965

16 February 2005 Self-priming and bubble tolerant micropump

Guolin Xu, Francis E. H. Tay, Ciprian Iliescu, Vincent Luar

Proceedings Volume 5651, Biomedical Applications of Micro- and Nanoengineering II; (2005) https://doi.org/10.1117/12.581965
Event: Smart Materials, Nano-, and Micro-Smart Systems, 2004, Sydney, Australia

Abstract

A self-priming and bubble tolerant planar micro-pump, which is fabricated by traditional technology, has been demonstrated and characterized. The micro-pump has a simple three-layered structure. Its two pump housings are made of polycarbonate and they are fabricated by computer numerical control (CNC) machine. The actuation membrane, which acts as the inlet and outlet valve membrane is cast in polydimethylsiloxane (PDMS). Using the PDMS membrane to act as the actuation membrane and valve membrane, we have solved the problem of sealing and poor compression ratio that most silicon based micro-pump faced. From the model of the membrane stroke volume, the flow rate of the pump is insensitive to the pump output pressure, and the output flow rate is linearly varying with actuating frequency. Flow rate up to 1000 ul/min of liquid has been achieved. More than 2m pump-head has been obtained when using water as the pumping medium. The robustness of the pump makes it suitable for disposable applications like biochip system.

Citation Download Citation

Guolin Xu, Francis E. H. Tay, Ciprian Iliescu, and Vincent Luar "Self-priming and bubble tolerant micropump", Proc. SPIE 5651, Biomedical Applications of Micro- and Nanoengineering II, (16 February 2005); https://doi.org/10.1117/12.581965

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KEYWORDS

Actuators

Prototyping

Silicon

Head

Microfluidics

Biotechnology

Liquids

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