Piezoelectric harvester scavenges energy from cavity of phononic crystal

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TitrePiezoelectric harvester scavenges energy from cavity of phononic crystal
Type de publicationConference Paper
Year of Publication2017
AuteursHu H, Zheng Y, Jiang S, Hu Y, Laude V
Conference Name2017 JOINT CONFERENCE OF THE EUROPEAN FREQUENCY AND TIME FORUM AND IEEE INTERNATIONAL FREQUENCY CONTROL SYMPOSIUM (EFTF/IFC)
PublisherIEEE
Conference Location345 E 47TH ST, NEW YORK, NY 10017 USA
ISBN Number978-1-5386-2916-1
Mots-clésCavity, phononic crystal, Power harvester
Résumé

We propose a model of a piezoelectric power harvester that scavenges energy from the cavity of a phononic crystal (PnC). The band structure of the PnC with a cavity is calculated by super-cell technique. The energy is collected in the cavity when the frequency of the cavity defect mode appears inside the band gap. As a result, the harvester can transform mechanical energy into electric energy efficiently.