Efficient Nonlinear Energy Harvesting with Wrinkled Piezoelectric Membranes

Publication Type:

Journal Article

Source:

Energy Harvesting and Systems, Volume 3, Issue 2, p.133–137 (2016)

Abstract:

We investigate the performance of a piezoelectric energy harvester with nonlinearity induced by wrinkles. Linear and nonlinear regimes are detected in the electric response of the device when sweeping the intensity of the external excitation. Those regimes are related to the activation of a nonlinear mechanical response that appears when increasing the excitation amplitude. The wrinkles have been found to improve the power density and the normalized power density, in a certain noise power range.