The University of Southampton
University of Southampton Institutional Repository

A Free-Standing, Thick-Film Piezoelectric Energy Harvester

A Free-Standing, Thick-Film Piezoelectric Energy Harvester
A Free-Standing, Thick-Film Piezoelectric Energy Harvester
In this paper, free-standing structures in the form of cantilevers, fabricated by using a combination of conventional thick-film technology and sacrificial layer techniques, is proposed. These structures were designed to operate as energy harvesters at low-levels of ambient vibration and were characterised using a shaker table over a range of frequencies and acceleration levels. A cantilever with dimensions of 13.5 mm long by 9 mm wide and total thickness of 192 micron was found to have Young’s modulus of 3.8 x 10 N/m2, effective mass of 0.035g and spring constant of 362 N/m. Samples of length 18 mm and functional elements (Lead Zirconate Titanate, PZT) of thickness 80 ?m were found to produce an output voltage of up to 130 mV at their resonant frequency of 229 Hz, for an acceleration level of 0.981 ms-2 when driving into a resistive load of 60 kOhm. The addition of a proof mass was shown to improve the electrical output power generation. In a series of experiments, the electric power generated by a beam having a proof mass of 2.2 g, resulted in a nine-fold improvement of output power compared to a device with no proof mass. The size of the proof mass is also an important factor in determining the output power of the device.
Kok, S. L.
b54e40a3-13b5-4793-9571-90373cbd8ee8
White, N. M.
c7be4c26-e419-4e5c-9420-09fc02e2ac9c
Harris, N. R.
237cfdbd-86e4-4025-869c-c85136f14dfd
Kok, S. L.
b54e40a3-13b5-4793-9571-90373cbd8ee8
White, N. M.
c7be4c26-e419-4e5c-9420-09fc02e2ac9c
Harris, N. R.
237cfdbd-86e4-4025-869c-c85136f14dfd

Kok, S. L., White, N. M. and Harris, N. R. (2008) A Free-Standing, Thick-Film Piezoelectric Energy Harvester. IEEE Sensors 2008, Lecce, Italy. 26 - 29 Oct 2008.

Record type: Conference or Workshop Item (Other)

Abstract

In this paper, free-standing structures in the form of cantilevers, fabricated by using a combination of conventional thick-film technology and sacrificial layer techniques, is proposed. These structures were designed to operate as energy harvesters at low-levels of ambient vibration and were characterised using a shaker table over a range of frequencies and acceleration levels. A cantilever with dimensions of 13.5 mm long by 9 mm wide and total thickness of 192 micron was found to have Young’s modulus of 3.8 x 10 N/m2, effective mass of 0.035g and spring constant of 362 N/m. Samples of length 18 mm and functional elements (Lead Zirconate Titanate, PZT) of thickness 80 ?m were found to produce an output voltage of up to 130 mV at their resonant frequency of 229 Hz, for an acceleration level of 0.981 ms-2 when driving into a resistive load of 60 kOhm. The addition of a proof mass was shown to improve the electrical output power generation. In a series of experiments, the electric power generated by a beam having a proof mass of 2.2 g, resulted in a nine-fold improvement of output power compared to a device with no proof mass. The size of the proof mass is also an important factor in determining the output power of the device.

Text
6551.pdf - Other
Download (291kB)

More information

e-pub ahead of print date: 2008
Additional Information: Event Dates: 26 - 29 October 2008
Venue - Dates: IEEE Sensors 2008, Lecce, Italy, 2008-10-26 - 2008-10-29
Organisations: EEE

Identifiers

Local EPrints ID: 266156
URI: http://eprints.soton.ac.uk/id/eprint/266156
PURE UUID: c1c6c2fa-da4c-407d-8807-9147fc6854c5
ORCID for N. M. White: ORCID iD orcid.org/0000-0003-1532-6452
ORCID for N. R. Harris: ORCID iD orcid.org/0000-0003-4122-2219

Catalogue record

Date deposited: 18 Jul 2008 10:36
Last modified: 15 Mar 2024 02:46

Export record

Contributors

Author: S. L. Kok
Author: N. M. White ORCID iD
Author: N. R. Harris ORCID iD

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×