Segmented Electrodes for Piezoelectric Energy Harvesters

Kodali, Prakash and Krishna, Akshay and Varun, Roop and Prasad, Mandya and Sambandan, Sanjiv (2014) Segmented Electrodes for Piezoelectric Energy Harvesters. In: IEEE ELECTRON DEVICE LETTERS, 35 (4). pp. 485-487.

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Abstract

This letter studies the impact of electrode segmentation on energy harvesting with piezoelectrics. For cases where the load can be distributed, it is concluded that segmentation of electrodes helps to improve energy content by minimizing surface currents. Using a ribbon of polyvinylidene fluoride under tension as an example, we show that using a six segmented electrode improves energy content by a factor of 2.5. Power delivery remains almost constant except for an anomalous increase when the number of segments is made large. Models are developed to predict improvements in energy content and power delivery.

Item Type:	Journal Article
Publication:	IEEE ELECTRON DEVICE LETTERS
Publisher:	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Additional Information:	Copyright for this article belongs to the IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, USA
Keywords:	Piezoelectric; energy harvesting; polymers; poly-vinylidene fluoride
Department/Centre:	Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited:	09 Jun 2014 09:27
Last Modified:	09 Jun 2014 09:27
URI:	http://eprints.iisc.ac.in/id/eprint/49027

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