The last two decades have witnessed several advances in micro-fabrication technologies and electronics, leading to the development of small, low-power devices for wireless sensing, data transmission, actuation and medical implants. The actual implementation of these devices is moderated by their power sources, however, in the recent years the concept of vibratory energy harvesting has flourished as a possible alternative to conventional batteries to power and maintain these low-power electronics. Motivated by the need to improve the efficiency of the vibratory energy harvesters(VEHs), a...