Piezoelectric monolayers as nonlinear energy harvesters
López Suárez, Miquel (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica)
Pruneda, Miguel (Institut Català de Nanociència i Nanotecnologia)
Abadal Berini, Gabriel (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica)
Rurali, Riccardo (Institut de Ciència de Materials de Barcelona)

Date:	2014
Abstract:	We study the dynamics of h-BN monolayers by first performing ab-initio calculations of the deformation potential energy and then solving numerically a Langevine-type equation to explore their use in nonlinear vibration energy harvesting devices. An applied compressive strain is used to drive the system into a nonlinear bistable regime, where quasi-harmonic vibrations are combined with low-frequency swings between the minima of a double-well potential. Due to its intrinsic piezoelectric response, the nonlinear mechanical harvester naturally provides an electrical power that is readily available or can be stored by simply contacting the monolayer at its ends. Engineering the induced nonlinearity, a 20 nm device is predicted to harvest an electrical power of up to 0. 18 pW for a noisy vibration of 5 pN.
Grants:	European Commission 270005 Ministerio de Ciencia e Innovación FIS2012-37549 Ministerio de Ciencia e Innovación ENE2009-14340-CO2-02
Rights:	Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets.
Language:	Anglès
Document:	Article ; recerca ; Versió sotmesa a revisió
Published in:	Nanotechnology, Vol. 25, issue 17 (May 2014) , art. 175401, ISSN 1361-6528

DOI: 10.1088/0957-4484/25/17/175401

Preprint 12 p, 593.5 KB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Articles > Research articles
Articles > Published articles