In the presented study, check valve micropumps with three different valve designs have been developed, fabricated, and successfully tested. These check valves — in the form of differently shaped flaps — were integrated monolithically within the microchannel inlet and outlet of the pump chamber which allows for rapid and inexpensive fabrication of the device. The pump is made of Polydimethylsiloxane (PDMS) with a fully integrated circular piezo-electric transducer (PZT) as a micropump actuator. The performance of the micropumps was characterized under different actuator frequencies, depending on the excitation signal (square, sinusoidal or saw tooth), the implemented PZT diameter (10 mm or 15 mm), as well as the applied offset voltage (positive or negative). Ethanol was used as the working fluid in all experiments. The fabrication technology of the monolithically designed micropump is described, and the results are presented in terms of flow rates. The presented work suggests that the check valve design has an apparent effect on the micropump performance under different operational conditions. All in all, the first results show promising characteristics for easy and inexpensive integration of the proposed micropump in disposable lab-on-a-chip systems.
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ASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels collocated with 3rd Joint US-European Fluids Engineering Summer Meeting
August 1–5, 2010
Montreal, Quebec, Canada
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-5450-1
PROCEEDINGS PAPER
The Effect of Different Monolithically Integrated Check Valve Designs on the Efficiency of Disposable PZT-PDMS-Micropumps Available to Purchase
Stefanie Demming,
Stefanie Demming
TU Braunschweig, Braunschweig, Germany
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Ahmed Fadl,
Ahmed Fadl
TU Braunschweig, Braunschweig, Germany; University of Rhode Island, Kingston, RI
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Mareike Schleßmann,
Mareike Schleßmann
TU Braunschweig, Braunschweig, Germany
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Bjo¨rn Hoxhold,
Bjo¨rn Hoxhold
TU Braunschweig, Braunschweig, Germany
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Zongqin Zhang,
Zongqin Zhang
University of Rhode Island, Kingston, RI
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Stephanus Bu¨ttgenbach
Stephanus Bu¨ttgenbach
TU Braunschweig, Braunschweig, Germany
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Stefanie Demming
TU Braunschweig, Braunschweig, Germany
Ahmed Fadl
TU Braunschweig, Braunschweig, Germany; University of Rhode Island, Kingston, RI
Mareike Schleßmann
TU Braunschweig, Braunschweig, Germany
Bjo¨rn Hoxhold
TU Braunschweig, Braunschweig, Germany
Zongqin Zhang
University of Rhode Island, Kingston, RI
Stephanus Bu¨ttgenbach
TU Braunschweig, Braunschweig, Germany
Paper No:
FEDSM-ICNMM2010-31207, pp. 1175-1179; 5 pages
Published Online:
March 1, 2011
Citation
Demming, S, Fadl, A, Schleßmann, M, Hoxhold, B, Zhang, Z, & Bu¨ttgenbach, S. "The Effect of Different Monolithically Integrated Check Valve Designs on the Efficiency of Disposable PZT-PDMS-Micropumps." Proceedings of the ASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels collocated with 3rd Joint US-European Fluids Engineering Summer Meeting. ASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels: Parts A and B. Montreal, Quebec, Canada. August 1–5, 2010. pp. 1175-1179. ASME. https://doi.org/10.1115/FEDSM-ICNMM2010-31207
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