Design and Modal Analysis of Swastik-Shaped Flexible Piezoelectric Biomechanical Energy Harvester

Abstract

There is a lot of energy generated by the physiological activities inside the human body which gets wasted. In the recent times energy harvesting from these physiological activities is one of the major research area. In this work a swastik-shaped flexible piezoelectric biomechanical energy harvester (PBEH) is designed to harvest energy from the human body. The structure consists of squared-shaped seismic mass at the center of the four L-shaped beams forming a swastik using Polydimethylsiloxane (PDMS) as a flexible substrate and zinc oxide (ZnO) as the piezoelectric material and gold (Au) for the top and bottom electrode materials outperformed in terms of lower resonance frequency of 90 Hz which makes the device suitable for human body energy harvesting application. The designed PBEH can be attached as a band on any part of the human body for the harvesting of energy.