Abstract
Magnetoelectric (ME) based energy harvester has been attracting lots of interests due to its high output energy density at resonant frequency. However, the narrow bandwidth of the resonant frequency limits it for practical applications considering the wide frequency range of environmental energy source. This paper presents a hybrid multimodal energy harvester based on Metglas/PMN-PT ME composites. Specifically, the harvester uses 8 layers of Metglas to form a cantilever beam, and three PMN-PT plates are attached to the cantilever beam separately in order to work at different modes. The multimodal behaviors of energy harvester are demonstrated theoretically and experimentally. Such advanced energy harvester holds the promising for the wide frequency environmental energy utilization.
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