Abstract

ZnO nanofillers, with different morphologies, were synthesized by a facile aqueous sol-gel approach andembedded, at low concentration (i.e. 4 wt.%), into a UV-curable acrylic system. SEM observations showed ahomogeneous distribution of the fillers within the cured network. The different morphologies of ZnOnanostructures were found to significantly affect the thermo-oxidative stability and the glass transitiontemperature of the obtained UV-cured films. Microcantilevers, made of the prepared films with sputteredaluminum contact, were fabricated by using standard microfabrication technology and their piezoelectricresponse was investigated both at the resonance frequency and at lower frequency values. Despite the low ZnOcontent, all the UV-cured nanocomposite films showed interesting piezoelectric properties: in particular, thedevices containing flower-like nano-structures exhibited the highest root mean square voltage both at 150 Hzand at the resonance frequency (about 0.176 ± 0.001 and 0.914 ± 0.001 mV, respectively). In addition, thesedevices also showed maximum peak-peak voltage values at both the selected frequencies.

Autore Pugliese

• Signore Maria Assunta

Tutti gli autori

• G. Malucelli; A. Fioravanti; L. Francioso; C. De Pascali; M.A. Signore; M.C. Carotta; A. Bonanno; D. Duraccio

Titolo volume/Rivista

Progress in organic coatings

Anno di pubblicazione

2017

ISSN

0300-9440

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

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Numero di citazioni Scopus

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Ultimo Aggiornamento Citazioni

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Settori ERC

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Codici ASJC

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