“…VEH technologies include a variety of transducers and scales, including macroscopic or mesoscale electromagnetic [8,9,10,11] and piezoelectric [12,13,14,15] generators to MEMS-scale electrostatic [16] and piezoelectric [17,18,19] harvesters. Research efforts in the VEH field include attempts to increase the operational bandwidth [20,21], operate at low frequency [22] or high temperature [23], improved electronic power conditioning efficiency [24,25] or mechanical efficiency [26,27]. In relation to the integration with composite materials, piezoelectric films are particularly suitable due to the thin profile and manufacturing compatibility [28,29].…”