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[Conference]Gravity-driven pulsatile micromixer without using dynamic off-chip controllers


This paper reports a pulsatile micromixer without using any dynamic off-chip controllers and only relies on constant water-head pressure. This significantly differs from other pulsatile micromixers that use expansive, bulky controllers including high-voltage power supplies and function generators. The device is composed of self-actuated oscillator and mixer units, both of which include microfluidic valves and flexible membranes, With a constant input of water-head pressure, the oscillator unit generates pulsatile pressure to drive the mixer unit, thereby producing narrow periodic fluidic bands of two solutions for rapid mixing. The micromixer achieves up to 95% mixing efficiency in the flow rate and flow switching frequency of 2–20 μL/min and 14–20 Hz, respectively.

Published in: Micro Electro Mechanical Systems (MEMS), 2017 IEEE 30th International Conference on MEMS

Date of Conference: 22-26 Jan. 2017

Date Added to IEEE Xplore: 28 February 2017

DOI: 10.1109/MEMSYS.2017.7863649

Zhenglin Li

Department of Mechanical Engineering, Konkuk University, Seoul, Korea

Sung-Jin. Kim

Department of Mechanical Engineering, Konkuk University, Seoul, Korea

Link: http://ieeexplore.ieee.org/abstract/document/7863649/

#valve #MEMS #micromixer

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