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At present, a cantilever with an inertial mass at its free end is the most widely used form for a vibration-based energy harvester, due to its simple structure and fabrication. However, the one-dimensional operation limits device installation. We first report a multi-dimensional piezoelectric cantilever-type energy harvester that oscillates not only in the vertical direction but also in the radial direction. While the conventional cantilever-type energy harvester maintains almost its maximum output power when it is installed within 20° of the operating direction, the proposed device presents the significantly improved result that the output power is independent of the installation angle.
Published in:
Applied Physics Letters
(Volume:102
,
Issue:
4
)
Date of Publication: Jan 2013
- Page(s):
- 043901 - 043901-4
- ISSN :
- 0003-6951
- Digital Object Identifier :
- 10.1063/1.4789754
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 31 January 2013
- Issue Date :
- Jan 2013
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