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Vol. 122, Issue 11, November 2010, pp.102-112

 

Bullet

Electromechanical TiO2 Nanogenerators

 

1Valerio DALLACASA, 2Filippo DALLACASA

1Department of Computer Science,

University of Verona, Strada Le Grazie 15, 37134 Verona, Italy

2Istituto Superior Tecnico (IST)

Universidade Tecnica de Lisboa, Av. Rovisco Pais 1- 1049-001 Lisboa, Portugal

E-mail: valerio.dallacasa@univr.it, filippo.dallacasa@gmail.com

 

 

Received: 12 August 2010   /Accepted: 18 November 2010   /Published: 30 November 2010

 

Abstract: We have developed a nanogenerator that is driven by mechanical forces to produce continuous direct-current output. The nanogenerator was fabricated with titanium dioxide nanoparticle arrays that were placed beneath a conducting electrode with a small gap. The force drives the electrode up and down to bend and/or vibrate the nanoparticles. A piezoelectric process converts mechanical energy into electricity. The electrode collects the output electricity from all of the nanoparticles. The approach presents an adaptable, mobile, and cost-effective technology for powering nanodevices by harvesting mechanical energy from the environment.

 

Keywords: Piezoelectric sensor, Electromechanical nanogenerator, Flexoelectricity in nanostructures

 

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