In this paper, we report on the effect of micro- and nano-structuration on the piezoelectric properties of polymeric samples. We prepare micro-sized pillars and nano-wires (thus 1-D structures) of a piezoelectric polymer Poly(VinyliDene Fluoride-Tri FluoroEthylene) PVDF-TrFE and we compare their structural and piezoelectrical properties with a thin film (thus 2-D) of the same material. X-ray diffraction and infrared spectroscopy measurements show that the crystallization of the polymer into the ferroelectric β-phase is affected by the size of the confinement. The direct and converse piezoelectric characterization of the three polymeric structures shows important improvements as far as the nano-structuration is reached. As a proof of concept, we demonstrate the use of the three polymeric structures as potential flexible tactile sensors and bendable energy harvesters, showing a profound effect of the micro- and nano-structuration on the device performances.

Different Scale Confinements of PVDF-TrFE as Functional Material of Piezoelectric Devices / Canavese, Giancarlo; Stassi, Stefano; Cauda, Valentina Alice; Verna, Alessio; Motto, Paolo; Angelica, Chiodoni; Marasso, SIMONE LUIGI; Demarchi, Danilo. - In: IEEE SENSORS JOURNAL. - ISSN 1530-437X. - STAMPA. - 13:(2013), pp. 2237-2244. [10.1109/JSEN.2013.2248143]

Different Scale Confinements of PVDF-TrFE as Functional Material of Piezoelectric Devices

CANAVESE, GIANCARLO;STASSI, STEFANO;CAUDA, Valentina Alice;VERNA, ALESSIO;MOTTO, PAOLO;MARASSO, SIMONE LUIGI;DEMARCHI, DANILO
2013

Abstract

In this paper, we report on the effect of micro- and nano-structuration on the piezoelectric properties of polymeric samples. We prepare micro-sized pillars and nano-wires (thus 1-D structures) of a piezoelectric polymer Poly(VinyliDene Fluoride-Tri FluoroEthylene) PVDF-TrFE and we compare their structural and piezoelectrical properties with a thin film (thus 2-D) of the same material. X-ray diffraction and infrared spectroscopy measurements show that the crystallization of the polymer into the ferroelectric β-phase is affected by the size of the confinement. The direct and converse piezoelectric characterization of the three polymeric structures shows important improvements as far as the nano-structuration is reached. As a proof of concept, we demonstrate the use of the three polymeric structures as potential flexible tactile sensors and bendable energy harvesters, showing a profound effect of the micro- and nano-structuration on the device performances.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2508091
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