High figure of merit nonlinear microelectromagnetic energy harvesters for wideband applications

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dc.contributor.authorMallick, Dhiman
dc.contributor.authorAmann, Andreas
dc.contributor.authorRoy, Saibal
dc.contributor.funderScience Foundation Ireland
dc.date.accessioned2017-08-03T08:46:14Z
dc.date.available2017-08-03T08:46:14Z
dc.date.issued2016-12-26
dc.date.updated2017-08-02T12:18:17Z
dc.description.abstractWe 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.sponsorshipScience Foundation Ireland (Grant SFI-11/PI/1201)
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationMallick, 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.2016.2636164en
dc.identifier.doi10.1109/JMEMS.2016.2636164
dc.identifier.endpage282en
dc.identifier.issn1057-7157
dc.identifier.issued1en
dc.identifier.journaltitleJournal of Microelectromechanical Systemsen
dc.identifier.startpage273en
dc.identifier.urihttps://hdl.handle.net/10468/4418
dc.identifier.volume26en
dc.language.isoenen
dc.publisherInstitute 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.subjectWidebanden
dc.subjectSpringsen
dc.subjectMicromechanical devicesen
dc.subjectSiliconen
dc.subjectCopperen
dc.subjectEnergy harvestingen
dc.subjectEtchingen
dc.titleHigh figure of merit nonlinear microelectromagnetic energy harvesters for wideband applicationsen
dc.typeArticle (peer-reviewed)en
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