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arXiv · 1410.8462

Cooperativity in the enhanced piezoelectric response of polymer nanowires

Luana Persano·Canan Dagdeviren·Claudio Maruccio·Laura De Lorenzis·Dario Pisignano
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Abstract

We provide a detailed insight into piezoelectric energy generation from arrays of polymer nanofibers. For sake of comparison, we firstly measure individual poly(vinylidenefluoride-co-trifluoroethylene) (P(VDF-TrFe)) fibers at well-defined levels of compressive stress. Under an applied load of 2 mN, single nanostructures generate a voltage of 0.45 mV. We show that under the same load conditions, fibers in dense arrays exhibit a voltage output higher by about two orders of magnitude. Numerical modelling studies demonstrate that the enhancement of the piezoelectric response is a general phenomenon associated to the electromechanical interaction among adjacent fibers, namely a cooperative effect depending on specific geometrical parameters. This establishes new design rules for next piezoelectric nano-generators and sensors.

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Luana Persano, Canan Dagdeviren, Claudio Maruccio, Laura De Lorenzis, Dario Pisignano. 2015-02-25. Cooperativity in the enhanced piezoelectric response of polymer nanowires. https://doi.org/10.1002/adma.201403169

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