Abstract
The paper presents the examination of modern flexible piezoelectric thin films made of PVDF (polyvinylidene difluoride) in terms of their application in electromechanical transducers, a brief overview of available piezoelectric materials and energy harvesting devices based on piezoelectric. In order to assess the usefulness of these films from the perspective of described devices, the energy efficiency coefficient determined under the pulse excitation conditions was taken into account. Normalized volumetric efficiency ratio allows to evaluate the commercially available flexible piezoelectric films.
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