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Energy Harvesting From Piezoelectric Materials Fully Integrated in Footwear

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5 Author(s)
Rocha, J.G. ; Dept. of Ind. Electron., Univ. of Minho, Guimaraes, Portugal ; Goncalves, L.M. ; Rocha, P.F. ; Silva, M.P.
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In the last few years, there has been an increasing demand for low-power and portable-energy sources due to the development and mass consumption of portable electronic devices. Furthermore, the portable-energy sources must be associated with environmental issues and imposed regulations. These demands support research in the areas of portable-energy generation methods. In this scope, piezoelectric materials become a strong candidate for energy generation and storage in future applications. This paper describes the use of piezoelectric polymers in order to harvest energy from people walking and the fabrication of a shoe capable of generating and accumulating the energy. In this scope, electroactive ??-polyvinylidene fluoride used as energy harvesting element was introduced into a bicolor sole prepared by injection, together with the electronics needed to increase energy transfer and storage efficiency. An electrostatic generator was also included in order to increase energy harvesting.

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Industrial Electronics, IEEE Transactions on  (Volume:57 ,  Issue: 3 )