A simple micro electret power generator

We developed a novel, yet simple, micro electret power generator prototype for low-frequency energy harvesting applications. In this prototype, two electrodes of the power generator are placed on the stator. The rotor is only a plate with metal strips of half of the spatial frequency of the stator plate. The packaging is to simply fix the stator to a container and put the rotor directly on top of the stator. CYTOP, a MEMS-compatible perfluoropolymer, served as the electret material and charged with corona charging. The power output was 2.267 μ W at 60Hz.