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Deformation Analysis of a Pneumatically-Activated Polydimethylsiloxane (PDMS) Membrane and Potential Micro-Pump Applications

ITRI South Campus, Industrial Technology Research Institute, Tainan City 70955, Taiwan
Department of Mechanical and Automation Engineering, I-Shou University, Kaohsiung City 84001, Taiwan
Author to whom correspondence should be addressed.
Academic Editor: Joost Lötters
Micromachines 2015, 6(2), 216-229;
Received: 10 November 2014 / Accepted: 21 January 2015 / Published: 29 January 2015
(This article belongs to the Special Issue Biomedical Microdevices)
PDF [3666 KB, uploaded 29 January 2015]


This study presents a double-side diaphragm peristaltic pump for efficient medium transport without the unwanted backflow and the lagging effect of a diaphragm. A theoretical model was derived to predict the important parameter of the micropump, i.e., the motion of the valves at large deformations, for a variety of air pressures. Accordingly, we proposed an easy and robust design to fabricate a Polydimethylsiloxane (PDMS)-based micropump. The theoretical model agrees with a numerical model and experimental data for the deformations of the PDMS membrane. Furthermore, variations of the generated flow rate, including pneumatic frequencies, actuated air pressures, and operation modes were evaluated experimentally for the proposed micropumps. In future, the theoretical equation could provide the optimal parameters for the scientists working on the fabrication of the diaphragm peristaltic pump for applications of cell-culture. View Full-Text
Keywords: larger deformation; micro-pump; peristaltic; diaphragm; operation mode larger deformation; micro-pump; peristaltic; diaphragm; operation mode

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Chiou, C.-H.; Yeh, T.-Y.; Lin, J.-L. Deformation Analysis of a Pneumatically-Activated Polydimethylsiloxane (PDMS) Membrane and Potential Micro-Pump Applications. Micromachines 2015, 6, 216-229.

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