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dc.contributor.authorLi, Qiang
dc.contributor.authorKuang, Y
dc.contributor.authorZhu, M
dc.date.accessioned2017-01-10T12:11:31Z
dc.date.issued2017-01-20
dc.description.abstractThis letter presents a piezoelectric bimorph with auxetic (negative Poisson’s ratio) behaviors for increased power output in vibration energy harvesting. The piezoelectric bimorph comprises a 2D auxetic substrate sandwiched between two piezoelectric layers. The auxetic substrate is capable of introducing auxetic behaviors and thus increasing the transverse stress in the piezoelectric layers when the bimorph is subjected to a longitudinal stretching load. As a result, both 31- and 32-modes are simultaneously exploited to generate electric power, leading to an increased power output. The increasing power output principle was theoretically analyzed and verified by finite element (FE) modelling. The FE modelling results showed that the auxetic substrate can increase the transverse stress of a bimorph by 16.7 times. The average power generated by the auxetic bimorph is 2.76 times of that generated by a conventional bimorph.en_GB
dc.description.sponsorshipThe authors gratefully acknowledge financial support from the Engineering and Physical Sciences Research Council (EPSRC) in the UK through the grant EP/K020331/1.en_GB
dc.identifier.citationVol. 7, Iss. 1en_GB
dc.identifier.doihttp://dx.doi.org/10.1063/1.4974310
dc.identifier.urihttp://hdl.handle.net/10871/25138
dc.language.isoenen_GB
dc.publisherAmerican Institute of Physicsen_GB
dc.rights© 2017 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). [http://dx.doi.org/10.1063/1.4974310]
dc.titleAuxetic piezoelectric energy harvesters for increased electric power outputen_GB
dc.typeArticleen_GB
dc.identifier.issn2158-3226
dc.descriptionThis is the author accepted manuscript. The final version is available from AIP Publishing via the DOI in this record.
dc.identifier.journalAIP Advancesen_GB


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