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Micromachines 2018, 9(1), 1;

Optimization of Micropump Performance Utilizing a Single Membrane with an Active Check Valve

Department of Electrical and Mechanical Engineering, Hai Phong University, 171 Phan Dang Luu Road, Kien An District, Hai Phong City 180000, Vietnam
Material and Chemistry Research Laboratories, Industrial Technology Research Institute, Hsinchu 31040, Taiwan
Department of Mechanical and Automation Engineering, I-Shou University, Kaohsiung City 84001, Taiwan
Author to whom correspondence should be addressed.
Received: 16 November 2017 / Revised: 11 December 2017 / Accepted: 18 December 2017 / Published: 21 December 2017
PDF [1973 KB, uploaded 21 December 2017]


In this study, we successfully designed and tested a new micropump that utilizes an active check valve and bottom-protruding structure to achieve sample transportation. We performed theoretical analyses and numerical simulations to determine the optimal location of the active check valve. We also experimentally analyzed variations in the generated flow rate with respect to the pneumatic frequencies, actuated air pressures, and locations of the active check valve. The experimental results indicate the optimum air pressure, driving frequency, and location of the active check valve to be 68.9 kPa, 26.0 Hz, and 2.0 mm, respectively. We obtained a maximum pumping rate of 488 μL/min and a maximum pumping efficiency of 35.4%. The proposed micropump could perform a crucial function in the transportation of microfluids and could be incorporated into micro total analysis systems. View Full-Text
Keywords: micropump; active check-valve; bottom-protruding structure; pumping efficiency micropump; active check-valve; bottom-protruding structure; pumping efficiency

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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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Bui, G.T.; Wang, J.-H.; Lin, J.-L. Optimization of Micropump Performance Utilizing a Single Membrane with an Active Check Valve. Micromachines 2018, 9, 1.

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