Broadband bimorph piezoelectric energy harvesting by exploiting bending-torsion of L-shaped structure

Vibration-based piezoelectric energy harvesting has the potential to effectively power electronic sensors and communication devices of wireless networks. To address the need to increase the levels of harvested energy and increase its frequency bandwidth, we exploit multi-modal and multi-directional responses of a simple structure. Given advances made in developing piezoelectric materials with large face shear piezoelectric coefficients (d36), we...