Development and performance research on pulse-free microfluidic on-chip peristaltic micropump

被引：0
|
作者：
Zhang, Xinjie [1 ,2 ]
Bao, Yang [1 ]
Liu, Yuyang [1 ]
Zhu, Hangjie [1 ]
Chen, Yawei [1 ]
机构：
[1] College of Mechanical and Electrical Engineering, Hohai University, Changzhou,213022, China
[2] School of Mechanical Engineering, Southeast University, Nanjing,211189, China
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2024年 / 55卷 / 04期
关键词：
In order to solve the problems of flow pulse and low accuracy of microfluids in the delivery process; an on-chip peristaltic micropump based on the microfluidic technology was developed. The micropump was composed of a microfluidic chip and a motor actuation system; and the roller bearings on the actuation system were used to press the microchannel of the chip consistently; so as to realize precise fluid delivery. To study the flow performance of the micropump; the microchannel with the air chamber of flow stabilization was designed; and the prototype of microfluidic chip was fabricated by stereo lithography 3D printing technology and molding method. The motor actuation system was developed; and the average flow rate; the total flow rate and the instantaneous flow rate of the micropump under different motor rotational speeds were measured. The flow performance of the proposed micropump was compared with that of a commercial peristaltic pump. The results show that with the increase of the motor rotational speed of the micropump; the average flow rate of the micropump also increases; while the instantaneous flow variation decreases gradually. When the rotational speed of the motor is higher than 60 r/min; the instantaneous flow variation can be controlled within 5%; and the flow precision of the micropump is significantly higher than that of the commercial peristaltic pump. The proposed on-chip peristaltic pump can effectively eliminate the flow pulse and improve the control precision of microfluid; which has vast engineering application prospects in the delivery of precise microfluids. © 2024 Central South University of Technology. All rights reserved;
D O I：
10.11817/j.issn.1672-7207.2024.04.010
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页码：1351 / 1360
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