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Electrical capacitance with meshed electrodes for piezo-and pyro-electric energy harvesting applications

Zabek, D., Bowen, C. R. and Taylor, J. 2015. Electrical capacitance with meshed electrodes for piezo-and pyro-electric energy harvesting applications. Presented at: IEEE International Symposium on the Applications of Ferroelectric (ISAF), International Symposium on Integrated Functionalities (ISIF), and Piezoelectric Force Microscopy Workshop (PFM), Singapore, 24-27 May 2015. 2015 Joint IEEE International Symposium on the Applications of Ferroelectric (ISAF), International Symposium on Integrated Functionalities (ISIF), and Piezoelectric Force Microscopy Workshop (PFM). IEEE, -. 10.1109/ISAF.2015.7172674

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Abstract

When utilizing a meshed electrode design for piezo-and pyro-electric harvesting, there are changes in the electrical capacitance with mesh density and surface electrode coverage. For square meshed electrodes, geometrical limits are identified and the applicability of the parallel plate assumption is verified. The reduction of electrode coverage and element capacitance is examined with respect to the aspect ratio feature size relative to the dielectric thickness. Finite element analysis reveals the presence of electric fields that are four times stronger with the meshed electrode design compared to fully covered electrodes. The electrical energy stored in the harvester with meshed electrodes, and its availability for discharge, is only 4 % smaller than with a fully covered design.

Item Type: Conference or Workshop Item (Paper)
Date Type: Published Online
Status: In Press
Schools: Engineering
Publisher: IEEE
ISSN: 1099-4734
Funders: ERC
Last Modified: 13 Feb 2020 14:30
URI: http://orca.cf.ac.uk/id/eprint/129398

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