Fabrication and analysis of flexible nanocomposite piezoelectric energy harvester

Abstract

Flexible piezoelectric devices are the currently emerging technology for flexibility and robustness with outstanding piezoelectric performance. The various kind of piezoelectric materials boost the effectiveness of the vibration energy harvesting process, and the following research is focused: newlineThis research work, initially studied the ceramic piezoelectric material-based energy harvester. The hard and soft ceramic piezoelectric materials with different substrate materials-based vibration energy harvesters are simulated using the software COMSOL Multiphysics. The simulation results show that the soft material PZT 5H produces more power at optimal resistive load in a vibration energy harvester under point loading conditions. newlineThe ceramic-based vibration energy harvester has an inherently brittle nature. The Polyvinylidene fluoride (PVDF) material based flexible energy harvester improves the mechanical stability and flexibility. The frequency of various home appliances is measured through a vibrometer. The petal shaped substrate with a trapezoidal shape piezo layer cantilever beam is designed for the low frequency vibration energy harvesting purpose. The geometry parameters are optimized by the Nelder-Mead optimized method. newline