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External-integrated biomimetic micropump for microfluidic system

[+] Author Affiliations
Lei Wang

Dalian University of Technology, Key Laboratory for Micro/Nano Technology and System of Liaoning Province, School of Mechanical Engineering, No. 2 Linggong Road, Ganjingzi, Dalian, Liaoning Province 116024, China

Chong Liu

Dalian University of Technology, Key Laboratory for Micro/Nano Technology and System of Liaoning Province, School of Mechanical Engineering, No. 2 Linggong Road, Ganjingzi, Dalian, Liaoning Province 116024, China

Dalian University of Technology, Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education, School of Mechanical Engineering, No. 2 Linggong Road, Ganjingzi, Dalian, Liaoning Province 116024, China

Jingmin Li

Dalian University of Technology, Key Laboratory for Micro/Nano Technology and System of Liaoning Province, School of Mechanical Engineering, No. 2 Linggong Road, Ganjingzi, Dalian, Liaoning Province 116024, China

Zheng Xu, Lu Gan, Tao Li, Lijie Zhou, Yahui Ma, Hao Zhang, Kaiping Zhang

Dalian University of Technology, Key Laboratory for Micro/Nano Technology and System of Liaoning Province, School of Mechanical Engineering, No. 2 Linggong Road, Ganjingzi, Dalian, Liaoning Province 116024, China

J. Micro/Nanolith. MEMS MOEMS. 13(3), 033008 (Aug 11, 2014). doi:10.1117/1.JMM.13.3.033008
History: Received January 8, 2014; Revised June 23, 2014; Accepted July 10, 2014
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Abstract.  An external-integrated biomimetic micropump for a microfluidic system is demonstrated. An “artificial leaf” is constituted, which mimics the stomatal transpiration process in plants and utilizes the negative pressure generated to drive the fluid flow. The biomimetic micropump integrated an SU-8 film with a micropore array, agarose gel, a flow rate control unit, and additional necessary operating auxiliaries. SU-8 film with micropores and agarose gel is used to mimic the stomata and the mesophyll cells in a leaf, respectively. The flow rate control unit can change the flow rate of the micropump by adjusting the number of micropores that participate in transpiration. Additional necessary operating auxiliaries can fix a microchip, provide a continuous fluid supply, and speed up the fluid flow rate. Experiments on a microchip are conducted to evaluate the performance of the micropump platform. Results have shown that the flow rate of the micropump can be increased by accelerating the wind speed or raising the temperature.

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© 2014 Society of Photo-Optical Instrumentation Engineers

Citation

Lei Wang ; Chong Liu ; Jingmin Li ; Zheng Xu ; Lu Gan, et al.
"External-integrated biomimetic micropump for microfluidic system", J. Micro/Nanolith. MEMS MOEMS. 13(3), 033008 (Aug 11, 2014). ; http://dx.doi.org/10.1117/1.JMM.13.3.033008


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