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Numerical Simulation of Electromagnetic Actuator for Impedance Pumping

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Abstract:

This study designs and analyzes an impedance pump utilizing an electromagnetic actuator. The pump is designed to have three major components, namely a lower glass substrate patterned with a copper micro-coil, a microchannel, and an upper glass cover plate attached a magnetic PDMS diaphragm. When a current is passed through the micro-coil, an electromagnetic force is established between the coil and the magnetic diaphragm. The resulting deflection of the PDMS diaphragm creates an acoustic impedance mismatch within the microchannel, which results in a net flow. Overall, the simulated results reveal that a net flow rate of 52.8 μl/min can be obtained using a diaphragm displacement of 31.5 μm induced by a micro-coil input current of 0.5 A. The impedance pump proposed in this study provides a valuable contribution to the ongoing development of Lab-on-Chips (LoCs) systems.

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Periodical:

Key Engineering Materials (Volume 483)

Pages:

305-310

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.483.305

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Online since:

June 2011

Authors:

Chia Yen Lee, Chang Hsien Tai, Chin Lung Chang, Chien Hsiung Tsai, Yao Nan Wang, Lung Ming Fu

Keywords:

Electromagnetic Actuator, Impedance Pump, Magnetic PDMS Diaphragm, Micro-Electromechanical System (MEMS)

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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