Compact electret energy harvester with high power output

Compact electret energy harvesters, based on a design recently introduced, are presented. Using electret surface potentials in the 400 V regime and a seismic mass of 10 g, it was possible to generate output power up to 0.6 mW at 36 Hz for an input acceleration of 1 g. Following the presentation of a...

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Bibliographic Details
Published in:Applied physics letters 2016-08, Vol.109 (5)
Main Authors: Pondrom, P., Sessler, G. M., Bös, J., Melz, T.
Format: Article
Language:English
Subjects:
ACCELERATION
Applied physics
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
COMPARATIVE EVALUATIONS
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
DESIGN
ELECTRETS
Energy harvesting
Figure of merit
FORECASTING
Harvesters
Load resistance
Mathematical models
RESONANCE
SURFACE POTENTIAL
SURFACES
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Summary:Compact electret energy harvesters, based on a design recently introduced, are presented. Using electret surface potentials in the 400 V regime and a seismic mass of 10 g, it was possible to generate output power up to 0.6 mW at 36 Hz for an input acceleration of 1 g. Following the presentation of an analytical model allowing for the calculation of the power generated in a load resistance at the resonance frequency of the harvesters, experimental results are shown and compared to theoretical predictions. Finally, the performance of the electret harvesters is assessed using a figure of merit.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4960480