Background
What is a Nanogenerator?
Nanogenerators are energy harvesting devices designed to convert ambient energy available in the form of mechanical vibrations, human body movements (breathing, running, and heartbeat), waste heat, raindrops, and water flow into electrical power.
Origin of Nanogenerator
The Fundamental Physics of Nanogenerators Involved in Maxwell Equations,
To incorporate the influence of polarization of electrostatic charges induced on the surfaces in Maxwell's equations, Wang introduced an additional term, denoted a, in the displacement vector (D). That is,
The first term represents the induced current resulting from a changing electric field, while the second term accounts for the current caused by the polarization field of surface electrostatic charges. This second term serves as the theoretical foundation for nanogenerators.