J2230204 Development of vertical capacitive energy harvester using magnetic repulsive force

We propose a method of enhancing generated power by magnetic repulsive force in the vertical electret energy harvester. Since electrostatic attraction between dielectric and electret is reduced by magnetic force, the mass velocity is increased, which leads to the sharp current peak and high output power. The device with magnet generated 1.5 times of 30 μW than the device without magnet after 2 million times of contacts.