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Issue No. 01 - January-March (2005 vol. 4)
ISSN: 1536-1268
pp: 28-36
Shad Roundy , Australian National University
Eli S. Leland , University of California, Berkeley
Jessy Baker , University of California, Berkeley
Eric Carleton , University of California, Berkeley
Elizabeth Reilly , University of California, Berkeley
Elaine Lai , University of California, Berkeley
Brian Otis , University of California, Berkeley
Jan M. Rabaey , University of California, Berkeley
V. Sundararajan , University of California, Riverside
Paul K. Wright , University of California, Berkeley
If pervasive networks of wireless sensor and communication nodes are to achieve their full potential, researchers must develop practical solutions for self-powering these autonomous electronic devices. Batteries, fuel cells, and other fixed energy alternatives are impractical for wireless devices with an expected lifetime of more than 10 years. An alternative is to use devices that generate power by scavenging ambient environment energy. The authors have developed several small vibration-based energy scavengers using piezoelectric materials that can scavenge power from low-level ambient vibration sources. Given appropriate power conditioning and capacitive storage, the resulting power source is sufficient to support networks of ultra-low-power, peer-to-peer wireless nodes. This article describes these devices, as well as device designs that use new, sometimes micro-scale geometries.
Energy scavenging, energy harvesting, wireless sensor networks, piezoelectric materials, vibrational energy

V. Sundararajan et al., "Improving Power Output for Vibration-Based Energy Scavengers," in IEEE Pervasive Computing, vol. 4, no. , pp. 28-36, 2005.
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