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Frequency-controlled wireless passive thermopneumatic micromixer

This paper reports a novel wireless control of a thermopneumatic zigzag micromixer achieved by selectively activating two passive wireless heaters enabled by an external radiofrequency magnetic field. The two heaters, which are designed to have different resonant frequency (fr values of 100 and 130...

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Main Authors:	Nafea, M., Abuzaiter, A., Kazi, S., Mohamed Ali, M. S.
Format:	Article
Published:	Institute of Electrical and Electronics Engineers Inc. 2017
Subjects:	TK Electrical engineering. Electronics Nuclear engineering
Online Access:	http://eprints.utm.my/id/eprint/76507/ https://www.scopus.com/inward/record.uri?eid=2-s2.0-85018627195&doi=10.1109%2fJMEMS.2017.2692251&partnerID=40&md5=047c558e31de6405b55185ae1dabe0af
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spelling	my.utm.765072018-04-30T13:28:11Z http://eprints.utm.my/id/eprint/76507/ Frequency-controlled wireless passive thermopneumatic micromixer Nafea, M. Abuzaiter, A. Kazi, S. Mohamed Ali, M. S. TK Electrical engineering. Electronics Nuclear engineering This paper reports a novel wireless control of a thermopneumatic zigzag micromixer achieved by selectively activating two passive wireless heaters enabled by an external radiofrequency magnetic field. The two heaters, which are designed to have different resonant frequency (fr values of 100 and 130 MHz, are selectively activated by modulating the field frequency to their corresponding frvalues. Each heater is responsible for heating an air-heating chamber that is connected to a loading reservoir through a microdiffuser element, while the solutions pumped from each reservoir are mixed in a zigzag micromixing element that ends with an outlet hole. Mixing is achieved in a relatively short mixing length of a 2 mm, and was investigated over a low range of Reynold's number (Re) ≤ 10 that is suitable various biomedical applications. The numerically simulated and measured results of the proposed micromixer have shown mixing efficiencies values higher than 82% for the whole range of Re. The optimal activation switching time of the heaters is 10 s, at which the micromixer achieves a steady value of the maximum mixing efficiency after 65 s. The micromixer provides mixing-ratio controllability with a maximum flow rate and pressure drop of sim 3.4∼mu and 385.22 Pa, respectively. Institute of Electrical and Electronics Engineers Inc. 2017 Article PeerReviewed Nafea, M. and Abuzaiter, A. and Kazi, S. and Mohamed Ali, M. S. (2017) Frequency-controlled wireless passive thermopneumatic micromixer. Journal of Microelectromechanical Systems, 26 (3). pp. 691-703. ISSN 1057-7157 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85018627195&doi=10.1109%2fJMEMS.2017.2692251&partnerID=40&md5=047c558e31de6405b55185ae1dabe0af DOI:10.1109/JMEMS.2017.2692251
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
topic	TK Electrical engineering. Electronics Nuclear engineering
spellingShingle	TK Electrical engineering. Electronics Nuclear engineering Nafea, M. Abuzaiter, A. Kazi, S. Mohamed Ali, M. S. Frequency-controlled wireless passive thermopneumatic micromixer
description	This paper reports a novel wireless control of a thermopneumatic zigzag micromixer achieved by selectively activating two passive wireless heaters enabled by an external radiofrequency magnetic field. The two heaters, which are designed to have different resonant frequency (fr values of 100 and 130 MHz, are selectively activated by modulating the field frequency to their corresponding frvalues. Each heater is responsible for heating an air-heating chamber that is connected to a loading reservoir through a microdiffuser element, while the solutions pumped from each reservoir are mixed in a zigzag micromixing element that ends with an outlet hole. Mixing is achieved in a relatively short mixing length of a 2 mm, and was investigated over a low range of Reynold's number (Re) ≤ 10 that is suitable various biomedical applications. The numerically simulated and measured results of the proposed micromixer have shown mixing efficiencies values higher than 82% for the whole range of Re. The optimal activation switching time of the heaters is 10 s, at which the micromixer achieves a steady value of the maximum mixing efficiency after 65 s. The micromixer provides mixing-ratio controllability with a maximum flow rate and pressure drop of sim 3.4∼mu and 385.22 Pa, respectively.
format	Article
author	Nafea, M. Abuzaiter, A. Kazi, S. Mohamed Ali, M. S.
author_facet	Nafea, M. Abuzaiter, A. Kazi, S. Mohamed Ali, M. S.
author_sort	Nafea, M.
title	Frequency-controlled wireless passive thermopneumatic micromixer
title_short	Frequency-controlled wireless passive thermopneumatic micromixer
title_full	Frequency-controlled wireless passive thermopneumatic micromixer
title_fullStr	Frequency-controlled wireless passive thermopneumatic micromixer
title_full_unstemmed	Frequency-controlled wireless passive thermopneumatic micromixer
title_sort	frequency-controlled wireless passive thermopneumatic micromixer
publisher	Institute of Electrical and Electronics Engineers Inc.
publishDate	2017
url	http://eprints.utm.my/id/eprint/76507/ https://www.scopus.com/inward/record.uri?eid=2-s2.0-85018627195&doi=10.1109%2fJMEMS.2017.2692251&partnerID=40&md5=047c558e31de6405b55185ae1dabe0af
_version_	1643657329786224640
score	13.211869

Frequency-controlled wireless passive thermopneumatic micromixer

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