High figure of merit nonlinear microelectromagnetic energy harvesters for wideband applications

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dc.contributor.author Mallick, Dhiman
dc.contributor.author Amann, Andreas
dc.contributor.author Roy, Saibal
dc.date.accessioned 2017-08-03T08:46:14Z
dc.date.available 2017-08-03T08:46:14Z
dc.date.issued 2016-12-26
dc.identifier.citation Mallick, D., Amann, A. and Roy, S. (2016) 'High figure of merit nonlinear microelectromagnetic energy harvesters for wideband applications', Journal of Microelectromechanical Systems, 26(1), pp.273-282. doi:10.1109/JMEMS.2016.2636164 en
dc.identifier.volume 26 en
dc.identifier.issued 1 en
dc.identifier.startpage 273 en
dc.identifier.endpage 282 en
dc.identifier.issn 1057-7157
dc.identifier.uri http://hdl.handle.net/10468/4418
dc.identifier.doi 10.1109/JMEMS.2016.2636164
dc.description.abstract We report a new approach for designing high-performance microelectromechanical system (MEMS) electromagnetic energy harvesting devices, which can operate at low frequency (<;1 kHz) over the ultrawide bandwidth of 60-80 Hz. The output power from the devices is increased significantly at a low optimized load and this overall enhancement in performances is benchmarked using a "power integral (Pf)" figure-of-merit. The experimental results show that the efficient nonlinear designs produce large Pf values, giving rise to one of the highest normalized Pf densities among the reported MEMS scale nonlinear energy harvesting devices. This improvement is achieved by suitably designing the nonlinear spring architectures, where the nonlinearity arises from the stretching strain of the specifically designed fixed-fixed configured spring arms under large deflections and gives rise to wideband output response. Different fundamental modes of the mechanical structures are brought relatively close, which further widens the power-frequency response by topologically varying the spring architectures and by realizing the same using the thin silicon-on-insulator substrate using MEMS processing technology. In addition, we have used the magnet as proof mass to increase the output power in contrary to conventional approach of using the coil as the proof mass in micro-electromagnetic energy harvesters. The high performance obtained from the MEMS energy harvesters with integrated double layer micro-coil is compared with the same using wire wound copper coil. The experimentally obtained results are qualitatively explained by using a finite-element analysis of the designed structures. en
dc.description.sponsorship Science Foundation Ireland (Grant SFI-11/PI/1201)
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Institute of Electrical and Electronics Engineers (IEEE) en
dc.rights © 2016, IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. en
dc.subject Wideband en
dc.subject Springs en
dc.subject Micromechanical devices en
dc.subject Silicon en
dc.subject Copper en
dc.subject Energy harvesting en
dc.subject Etching en
dc.title High figure of merit nonlinear microelectromagnetic energy harvesters for wideband applications en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Saibal Roy, Tyndall Microsystems, University College Cork, Cork, Ireland. +353-21-490-3000 Email: saibal.roy@tyndall.ie en
dc.internal.availability Full text available en
dc.date.updated 2017-08-02T12:18:17Z
dc.description.version Accepted Version en
dc.internal.rssid 405431301
dc.contributor.funder Science Foundation Ireland
dc.description.status Peer reviewed en
dc.identifier.journaltitle Journal of Microelectromechanical Systems en
dc.internal.copyrightchecked Yes en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress saibal.roy@tyndall.ie en

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