Inducing bistability with local electret technology in a microcantilever based non-linear vibration energy harvester
López Suárez, Miquel (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica)
Agustí Batlle, Jordi (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica)
Torres, Francesc 1948- (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica)
Rurali, Riccardo (Institut de Ciència de Materials de Barcelona)
Abadal Berini, Gabriel (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica)
American Institute of Physics

Date:	2013
Abstract:	A micro-electro-mechanical system based vibration energy harvester is studied exploring the benefits of bistable non linear dynamics in terms of energy conversion. An electrostatic based approach to achieve bistability, which consists in the repulsive interaction between two electrets locally charged in both tip free ends of an atomic force microscope cantilever and a counter electrode, is experimentally demonstrated. A simple model allows the prediction of the measured dynamics of the system, which shows an optimal distance between the cantilever and the counter electrode in terms of the root mean square vibration response to a colored Gaussian excitation noise.
Rights:	Tots els drets reservats.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Electrodes ; Microelectromechanical systems ; Electrets ; Gold ; Linear dynamical systems
Published in:	Applied physics letters, Vol. 102, Issue 15 (April 2013) , p. 153901/1-153901/4, ISSN 1077-3118

DOI: 10.1063/1.4800926

5 p, 1.3 MB

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