Editorial for the Special Issue on Piezoelectric Nanogenerators for Micro-Energy and Self-Powered Sensors.

Energy harvesting consists of scavenging energy from the surrounding environment knowing that this energy would be "lost" if not scavenged. The second article referenced in [[2]] reports the effect of dielectric constant on electrical outputs of a piezoelectric nanogenerator that uses ZnO/PDMS composites with varied ZnO coverages. Enhancing Electrical Outputs of Piezoelectric Nanogenerators by Controlling the Dielectric Constant of ZnO/PDMS Compositen. In [[1]], Kumari and Rakotondrabe present a design for harvesting small-scale kinetic energy using a structure based on lithium niobate (LiNbO3) piezoelectric material and multiple cantilevers. [Extracted from the article]