We present an extensive characterization and modeling of the use of a polyvinylidene fluoride trifluoroethylene copolymer P(VDF-TrFE) as a photo activated actuator. P(VDF-TrFE) copolymers are very appealing for applications because, on the opposite of the PVDF homopolymer, which requires a drawing or stretching followed by annealing and poling process to show ferroelectric properties, they spontaneously crystallize to beta phase. Based on the measurement of the bending of P(VDF-TrFE) strips under illumination, we extrapolated a model of the role of temperature, piezoelectric effect, and photostrictive components. (C) 2011 American Institute of Physics. [doi:10.1063/1.3610485]
Photostrictive effect in a polyvinylidene fluoride-trifluoroethylene copolymer
MENEGHINI, MATTEO;ZANONI, ENRICO
2011
Abstract
We present an extensive characterization and modeling of the use of a polyvinylidene fluoride trifluoroethylene copolymer P(VDF-TrFE) as a photo activated actuator. P(VDF-TrFE) copolymers are very appealing for applications because, on the opposite of the PVDF homopolymer, which requires a drawing or stretching followed by annealing and poling process to show ferroelectric properties, they spontaneously crystallize to beta phase. Based on the measurement of the bending of P(VDF-TrFE) strips under illumination, we extrapolated a model of the role of temperature, piezoelectric effect, and photostrictive components. (C) 2011 American Institute of Physics. [doi:10.1063/1.3610485]Pubblicazioni consigliate
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