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Abstract
Flexible piezoelectric devices with poly (vinylidene fluoride–trifluoroethylene) thin films were fabricated, and directly monitoring of the heart state and piezoelectric power generation were investigated using the pulsating 3D heart model. By attaching the flexible piezoelectric devices to the 3D heart model, the piezoelectric responses corresponding to the pulsation of the right and left ventricles were observed and reflected the status of heart. The maximum output voltage was obtained in the front of the right ventricle of the heart model. The output energy, which caused from piezoelectric effect, improved linearly with the increase of the device area, and was estimated to be approximately 8 nJ mm−2 per heartbeat.
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