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

被引：26

作者：

Canavese, Giancarlo ^{[1
]}

Stassi, Stefano ^{[1
]}

Cauda, Valentina ^{[1
]}

Verna, Alessio ^{[1
]}

Motto, Paolo ^{[2
]}

Chiodoni, Angelica ^{[1
]}

Marasso, Simone Luigi ^{[3
]}

Demarchi, Danilo ^{[1
]}

机构：

[1] Italian Inst Technol, Ctr Space Human Robot, I-10129 Turin, Italy

[2] Politecn Torino, Dept Elect & Telecommun, I-10129 Turin, Italy

[3] Politecn Torino, Dept Appl Sci & Technol, I-10129 Turin, Italy

来源：

IEEE SENSORS JOURNAL | 2013年 / 13卷 / 06期

关键词：

Energy harvesting; nano-structured materials; piezoelectric effect; polymer film; tactile sensors; POLY(VINYLIDENE FLUORIDE); BETA-PHASE; CRYSTALLIZATION; FILMS;

D O I：

10.1109/JSEN.2013.2248143

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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 beta-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.

引用

页码：2237 / 2244

页数：8

共 20 条

[1] Tuned dielectric, pyroelectric and piezoelectric properties of ferroelectric P(VDF-TrFE) thin films by using mechanical loads [J].