Piezoelectric energy harvester having planform-tapered interdigitated beams
Abstract
Embodiments of energy harvesters have a plurality of piezoelectric planform-tapered, interdigitated cantilevered beams anchored to a common frame. The plurality of beams can be arranged as two or more sets of beams with each set sharing a common sense mass affixed to their free ends. Each set thus defined being capable of motion independent of any other set of beams. Each beam can comprise a unimorph or bimorph piezoelectric configuration bonded to a conductive or non-conductive supporting layer and provided with electrical contacts to the active piezoelectric elements for collecting strain induced charge (i.e. energy). The beams are planform tapered along the entirety or a portion of their length thereby increasing the effective stress level and power output of each piezoelectric element, and are interdigitated by sets to increase the power output per unit volume of a harvester thus produced.
- Inventors:
-
- Tijeras, NM
- Albuquerque, NM
- Issue Date:
- Research Org.:
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1017264
- Patent Number(s):
- 7948153
- Application Number:
- 12/325,311
- Assignee:
- Sandia Corporation (Albuquerque, NM)
- DOE Contract Number:
- AC04-94AL85000
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION
Citation Formats
Kellogg, Rick A, and Sumali, Hartono. Piezoelectric energy harvester having planform-tapered interdigitated beams. United States: N. p., 2011.
Web.
Kellogg, Rick A, & Sumali, Hartono. Piezoelectric energy harvester having planform-tapered interdigitated beams. United States.
Kellogg, Rick A, and Sumali, Hartono. Tue .
"Piezoelectric energy harvester having planform-tapered interdigitated beams". United States. https://www.osti.gov/servlets/purl/1017264.
@article{osti_1017264,
title = {Piezoelectric energy harvester having planform-tapered interdigitated beams},
author = {Kellogg, Rick A and Sumali, Hartono},
abstractNote = {Embodiments of energy harvesters have a plurality of piezoelectric planform-tapered, interdigitated cantilevered beams anchored to a common frame. The plurality of beams can be arranged as two or more sets of beams with each set sharing a common sense mass affixed to their free ends. Each set thus defined being capable of motion independent of any other set of beams. Each beam can comprise a unimorph or bimorph piezoelectric configuration bonded to a conductive or non-conductive supporting layer and provided with electrical contacts to the active piezoelectric elements for collecting strain induced charge (i.e. energy). The beams are planform tapered along the entirety or a portion of their length thereby increasing the effective stress level and power output of each piezoelectric element, and are interdigitated by sets to increase the power output per unit volume of a harvester thus produced.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue May 24 00:00:00 EDT 2011},
month = {Tue May 24 00:00:00 EDT 2011}
}
Works referenced in this record:
Power management for energy harvesting wireless sensors
conference, May 2005
- Arms, S. W.; Townsend, C. P.; Churchill, D. L.
- Smart Structures and Materials, SPIE Proceedings