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Proceedings Paper

Performance comparison of implantable piezoelectric energy harvesters
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Paper Abstract

This paper presents experimental results that demonstrate energy generating performance of circular piezoelectric diaphragm harvesters for use in implantable medical devices. The piezoelectric energy generators are designed to transfer internal biomechanical forces into electrical energy that can be stored and used to power other in vivo devices. Such energy harvesters can eliminate complicated procedures for replacement of batteries in active implants by possibly increasing the longevity or capacity of batteries. Experimental results indicated that the PZT circular diaphragm harvesters generated enough power to meet requirements for specific implantable medical devices. It is also found that edge condition, thickness of bonding layer, and a degree of symmetry in fabrication for the unimorph circular diaphragms affect the energy generating performance significantly.

Paper Details

Date Published: 18 April 2008
PDF: 10 pages
Proc. SPIE 6928, Active and Passive Smart Structures and Integrated Systems 2008, 69280C (18 April 2008); doi: 10.1117/12.776293
Show Author Affiliations
Changki Mo, Univ. of Pittsburgh (United States)
Leon J. Radziemski, Piezo Energy Technologies, LLC (United States)
William W. Clark, Univ. of Pittsburgh (United States)

Published in SPIE Proceedings Vol. 6928:
Active and Passive Smart Structures and Integrated Systems 2008
Mehdi Ahmadian, Editor(s)

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