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Open AccessArticle

Understanding Interdependencies between Mechanical Velocity and Electrical Voltage in Electromagnetic Micromixers

1
Department of Electrical and Electronic Engineering, Newcastle University in Singapore, 172A Ang Mo Kio Avenue 8, ♯05-01 [email protected] Building, Singapore 567739, Singapore
2
Department of Biomedical Engineering, National University of Singapore, 21 Lower Kent Ridge Rd, Singapore 119077, Singapore
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Singapore Institute of Manufacturing Technology, 2 Fusionopolis Way, Singapore 138634, Singapore
4
Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Korea
5
Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
*
Author to whom correspondence should be addressed.
Micromachines 2020, 11(7), 636; https://doi.org/10.3390/mi11070636
Received: 18 May 2020 / Revised: 23 June 2020 / Accepted: 25 June 2020 / Published: 29 June 2020
(This article belongs to the Special Issue Analysis, Design and Fabrication of Micromixers)
Micromixers are critical components in the lab-on-a-chip or micro total analysis systems technology found in micro-electro-mechanical systems. In general, the mixing performance of the micromixers is determined by characterising the mixing time of a system, for example the time or number of circulations and vibrations guided by tracers (i.e., fluorescent dyes). Our previous study showed that the mixing performance could be detected solely from the electrical measurement. In this paper, we employ electromagnetic micromixers to investigate the correlation between electrical and mechanical behaviours in the mixer system. This work contemplates the “anti-reciprocity” concept by providing a theoretical insight into the measurement of the mixer system; the work explains the data interdependence between the electrical point impedance (voltage per unit current) and the mechanical velocity. This study puts the electromagnetic micromixer theory on a firm theoretical and empirical basis. View Full-Text
Keywords: micromixers; acoustic micromixers; active micromixers; electromagnetic micromixers; voice-coil mixers; mixers; anti-reciprocity; electrical impedance; mechanical velocity; gyrator; electro-mechanical systems micromixers; acoustic micromixers; active micromixers; electromagnetic micromixers; voice-coil mixers; mixers; anti-reciprocity; electrical impedance; mechanical velocity; gyrator; electro-mechanical systems
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Kim, N.; Chan, W.X.; Ng, S.H.; Yoon, Y.-J.; Allen, J.B. Understanding Interdependencies between Mechanical Velocity and Electrical Voltage in Electromagnetic Micromixers. Micromachines 2020, 11, 636.

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