A novel piezoelectric ZnO nanogenerator on flexible metal alloy substrate

Gaddam, Venkateswarlu and Joshi, Sudeep and Parmar, Mitesh and Rajanna, K and Nayak, MM (2012) A novel piezoelectric ZnO nanogenerator on flexible metal alloy substrate. In: 11th IEEE Sensors Conference, OCT 28-31, 2012 , Taipei, TAIWAN, pp. 1870-1873.

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Abstract

In this paper, we report a novel piezoelectric ZnO nanogenerator on flexible metal alloy substrate (Phynox alloy) for energy harvesting and sensing applications. The vertically aligned ZnO nanowires are sandwiched between Au electrodes. The aligned growth of ZnO nanowires have been successfully synthesized on Au coated metal alloy substrate by hydrothermal method at low temperature (95 +/- 1 degrees C). The as-synthesized vertically aligned ZnO nanowires were characterized using FE-SEM. Further, PMMA is spin coated over the aligned ZnO nanowires for the purpose of their long term stability. The fabricated nanogenerator is of size 30mm x 6mm. From energy harvesting point of view, the response of the nanogenerator due to finger tip impacts ranges from 0.9 V to 1.4V. Also for sensing application, the maximum output voltage response of the nanogenerator is found to be 2.86V due to stainless steel (SS) ball impact and 0.92 V due to plastic ball impact.

Item Type:	Conference Proceedings
Series.:	IEEE Sensors
Publisher:	IEEE
Additional Information:	Copyright for this article belongs to the IEEE, USA.
Keywords:	ZnO nanowires; nanogenerator; piezoelectricity
Department/Centre:	Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited:	04 May 2013 05:56
Last Modified:	04 May 2013 05:56
URI:	http://eprints.iisc.ac.in/id/eprint/46510

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