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Surfing the high energy output branch of nonlinear energy harvesters
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Published Version
Date
2016-11-04
Authors
Mallick, Dhiman
Amann, Andreas
Roy, Saibal
Journal Title
Journal ISSN
Volume Title
Publisher
American Physical Society
Published Version
Abstract
Hysteresis and multistability are fundamental phenomena of driven nonlinear oscillators, which, however, restrict many applications such as mechanical energy harvesting. We introduce an electrical control mechanism to switch from the low to the high energy output branch of a nonlinear energy harvester by exploiting the strong interplay between its electrical and mechanical degrees of freedom. This method improves the energy conversion efficiency over a wide bandwidth in a frequency-amplitude-varying environment using only a small energy budget. The underlying effect is independent of the device scale and the transduction method and is explained using a modified Duffing oscillator model.
Description
Keywords
Nonlinear oscillators , Hysteresis , Mechanical energy harvesting , Duffing oscillator model
Citation
Mallick, D., Amann, A., Roy, S., (2016) 'Surfing the high energy output branch of nonlinear energy harvesters'. Physical Review Letters, 117(19), 197701 (5pp). doi: 10.1103/PhysRevLett.117.197701
Copyright
© 2016 American Physical Society. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Physical Review Letters, 117(19) and may be found at http://link.aps.org/doi/10.1103/PhysRevLett.117.197701