Ferrofluid-based variable inductor

This paper reports a planar variable inductor that utilizes ferrofluid as the movable magnetic core. Ferrofluid is displaced over the planar inductor using the magnetic field provided by another coil aligned to the inductor, varying permeability distribution on the inductor to control its inductance...

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Main Authors: Assadsangabi, B., Mohamed Ali, Mohamed Sultan, Takahata, Kenichi
Format: Book Section
Published: IEEE 2012
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Online Access:http://eprints.utm.my/id/eprint/35780/
https://www.researchgate.net/publication/254021479_Ferrofluid-based_variable_inductor
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spelling my.utm.357802017-06-13T04:05:21Z http://eprints.utm.my/id/eprint/35780/ Ferrofluid-based variable inductor Assadsangabi, B. Mohamed Ali, Mohamed Sultan Takahata, Kenichi TK Electrical engineering. Electronics Nuclear engineering This paper reports a planar variable inductor that utilizes ferrofluid as the movable magnetic core. Ferrofluid is displaced over the planar inductor using the magnetic field provided by another coil aligned to the inductor, varying permeability distribution on the inductor to control its inductance. The repelling motion of ferrofluid from the inductor is uniquely enabled by superimposing a bias field on the varying magnetic field. The continuous modulation of inductance is experimentally demonstrated with the fabricated device. A 16% inductance variation is obtained at the full removal of the fluid from the inductor with a driving current of 1.2 A provided to the actuation coil. Frequency tuning is also demonstrated using a passive resonant tank constructed with the developed device. IEEE 2012 Book Section PeerReviewed Assadsangabi, B. and Mohamed Ali, Mohamed Sultan and Takahata, Kenichi (2012) Ferrofluid-based variable inductor. In: Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS). IEEE, New York, USA, pp. 1121-1124. ISBN 978-146730324-8 https://www.researchgate.net/publication/254021479_Ferrofluid-based_variable_inductor DOI:10.1109/MEMSYS.2012.6170359
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
Assadsangabi, B.
Mohamed Ali, Mohamed Sultan
Takahata, Kenichi
Ferrofluid-based variable inductor
description This paper reports a planar variable inductor that utilizes ferrofluid as the movable magnetic core. Ferrofluid is displaced over the planar inductor using the magnetic field provided by another coil aligned to the inductor, varying permeability distribution on the inductor to control its inductance. The repelling motion of ferrofluid from the inductor is uniquely enabled by superimposing a bias field on the varying magnetic field. The continuous modulation of inductance is experimentally demonstrated with the fabricated device. A 16% inductance variation is obtained at the full removal of the fluid from the inductor with a driving current of 1.2 A provided to the actuation coil. Frequency tuning is also demonstrated using a passive resonant tank constructed with the developed device.
format Book Section
author Assadsangabi, B.
Mohamed Ali, Mohamed Sultan
Takahata, Kenichi
author_facet Assadsangabi, B.
Mohamed Ali, Mohamed Sultan
Takahata, Kenichi
author_sort Assadsangabi, B.
title Ferrofluid-based variable inductor
title_short Ferrofluid-based variable inductor
title_full Ferrofluid-based variable inductor
title_fullStr Ferrofluid-based variable inductor
title_full_unstemmed Ferrofluid-based variable inductor
title_sort ferrofluid-based variable inductor
publisher IEEE
publishDate 2012
url http://eprints.utm.my/id/eprint/35780/
https://www.researchgate.net/publication/254021479_Ferrofluid-based_variable_inductor
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