A wideband zinc oxide energy harvester for IoT based sensor*

The features of microelectromechanical systems have been improved by advancements in manufacturing technology and growing rates of integration. The development of small structures or micro systems has created the” Internet of Things” revolution, thereby providing a significant portion of a digitized automated and interconnected environment around smart manufacturing, infrastructure, health and other areas of society. Frequent maintenance and battery refurbishment are not desirable in micro-systems, which require very low power $( \mu W mW )$ to operate. Therefore, the most challenging field of micro-scale harvesting research is battery-less activity. Low-frequency ambient vibrations are abundantly available sources of energy that can be used in electrical power conversion. In this study, a low-frequency wideband energy harvester is proposed and simulated.