Wide-bandwidth piezoelectric energy harvester integrated with parylene-C beam structures
A wide-bandwidth MEMS piezoelectric energy harvester by the Duffing effect. Parylene-C was employed as the structure material to reduce the resonance frequency. The loaddeflection relationship for trapezoid doubly-clamped beams was formulated. At 615Hz, with a maximum open-circuit voltage 368mV, the power achieves to 0.28?W. A wide operational frequencies range is obtained (from 200Hz to 600Hz).
piezoelectric energy harvester mems doubly-clamped beam ambient vibration