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A Finite Element Model of Self-Resonating Bimorph Microcantilever for Fast Temperature Cycling in A Pyroelectric Energy Harvester.

Published online by Cambridge University Press:  10 August 2011

Salwa Mostafa ,
Nicolay Lavrik ,
Thirumalesh Bannuru ,
Slo Rajic ,
Syed K. Islam ,
Panos G. Datskos  and
Scott R. Hunter
Salwa Mostafa
Affiliation:
Depapartment of Electrical Engineering and Computer Science, The University of Tennessee, Knoxville, TN 37996-2100, U.S.A.
Nicolay Lavrik
Affiliation:
Measurement Science and Systems Engineering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, U.S.A.
Thirumalesh Bannuru
Affiliation:
Measurement Science and Systems Engineering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, U.S.A.
Slo Rajic
Affiliation:
Measurement Science and Systems Engineering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, U.S.A.
Syed K. Islam
Affiliation:
Depapartment of Electrical Engineering and Computer Science, The University of Tennessee, Knoxville, TN 37996-2100, U.S.A.
Panos G. Datskos
Affiliation:
Measurement Science and Systems Engineering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, U.S.A.
Scott R. Hunter
Affiliation:
Measurement Science and Systems Engineering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, U.S.A.
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Abstract

A self resonating bimorph cantilever structure for fast temperature cycling in a pyroelectric energy harvester has been modeled using finite element method. Effect of constituting material properties and system parameters on the frequency and magnitude of temperature cycling and the efficiency of energy recycling using the proposed structure has been investigated. Results show that thermal contact conductance and heat source temperature play a key role in dominating the cycling frequency and efficiency of energy recycling. Studying the performance trend with various parameters such as thermal contact conductance, heat source temperature, device aspect ratio and constituent material of varying thermal conductivity and expansion coefficient, an optimal solution for most efficient energy scavenging process has been sought.

Keywords

energy generationferroelectricthermoelectric
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1325: Symposium E – Energy Harvesting—Recent Advances in Materials, Devices and Applications , 2011 , mrss11-1325-e04-04
Copyright
Copyright © Materials Research Society 2011

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References

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