TY - GEN
T1 - High-Speed and High-Resolution On-Chip Pumping Utilizing Asymmetric Flow Resistors
AU - Saito, Makoto
AU - Kasai, Yusuke
AU - Kumon, Hiroki
AU - Sakuma, Shinya
AU - Arai, Fumihito
N1 - Funding Information:
This work was supported by JSPS Grants-in-Aid for Scientific Research Number 17H04913.
Publisher Copyright:
© 2020 IEEE.
PY - 2020/1
Y1 - 2020/1
N2 - We present a revolutionary on-chip pumping with high-speed response, high-resolution and bidirectional continuous pumping. Generally, there is a tough challenge of on-chip pumping to break through the trade-off between response time and volumetric resolution with the function of bidirectional continuous pumping. In order to confront this challenge, we propose a concept of 'asymmetric flow resistors (AFRs)' whose flow resistance is temporally changed by utilizing the spatiotemporal vortices generated by physical interaction between ultrafast flow and uniquely designed asymmetric microstructures of microchannel. Thus, we achieved an unexplored specification of on-chip pumping with resolution of 1.4 nl with the single forward-backward actuation and response time of <50 ms with continuous flow. Furthermore, we demonstrated bidirectional pumping of picking-up and dispensing of single motile microalga by using a microfluidic pipette utilizing two proposed on-chip pumps with opposite direction.
AB - We present a revolutionary on-chip pumping with high-speed response, high-resolution and bidirectional continuous pumping. Generally, there is a tough challenge of on-chip pumping to break through the trade-off between response time and volumetric resolution with the function of bidirectional continuous pumping. In order to confront this challenge, we propose a concept of 'asymmetric flow resistors (AFRs)' whose flow resistance is temporally changed by utilizing the spatiotemporal vortices generated by physical interaction between ultrafast flow and uniquely designed asymmetric microstructures of microchannel. Thus, we achieved an unexplored specification of on-chip pumping with resolution of 1.4 nl with the single forward-backward actuation and response time of <50 ms with continuous flow. Furthermore, we demonstrated bidirectional pumping of picking-up and dispensing of single motile microalga by using a microfluidic pipette utilizing two proposed on-chip pumps with opposite direction.
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U2 - 10.1109/MEMS46641.2020.9056119
DO - 10.1109/MEMS46641.2020.9056119
M3 - Conference contribution
AN - SCOPUS:85083207205
T3 - Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)
SP - 135
EP - 138
BT - 33rd IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2020
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 33rd IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2020
Y2 - 18 January 2020 through 22 January 2020
ER -