Piezoelectric energy harvesters generate electricity depending on the amount of force used in compressing or deforming the material, the amount and type of deformation of the material's crystal structure and the speed or frequency of compressions or vibrations to the material. There are more than 200 appropriate materials which need careful selection for the particular application.
This report is the first to assess the progress, applications, players, challenges and forecasts of piezoelectric energy harvesters. Many companies are developing piezoelectric energy harvesters to power consumer electronics, sensors and much more. Already the huge success for this type of energy harvester is in creating the electrical arcs in cigarette lighters, but the future for this technology is much more exciting. Piezoelectric energy harvesters offer among the highest efficiency and power output by size and cost and are therefore very appealing. However, there are also challenges of reliability and broad band performance that need to be addressed.
More details and full report here: http://www.idtechex.com/research/reports/piezoelectric-energy-harvesting-2012-2022-forecasts-technologies-players-000320.asp
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