Poly(vinylidene fluoride-trifluoroethylene) Nanowires with Highly Anisotropic Piezoelectric Response Fabricated from Melt Phase

被引：4

作者：

Chen, Xiaosui ^{[1
]}

Chu, Xiangcheng ^{[2
]}

Zeng, Fei ^{[2
]}

Huang, Jeffie ^{[3
]}

Guo, Dong ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Acoust, Beijing 100190, Peoples R China

[2] Tsinghua Univ, Dept Mat Sci & Engn, Beijing 100086, Peoples R China

[3] Bruker Nano Surfaces Business, Beijing 100081, Peoples R China

来源：

SCIENCE OF ADVANCED MATERIALS | 2013年 / 5卷 / 08期

基金：

美国国家科学基金会;

关键词：

Poly(vinylidene fluoride-trifluoroethylene) (PVDF-TrFE); Nanowires; Anisotropic Piezoelectric Response; Melt Phase; ORIENTATION; COPOLYMERS; FILMS; CRYSTALLIZATION; EFFICIENCY; ALIGNMENT; GROWTH;

D O I：

10.1166/sam.2013.1592

中图分类号：

TB3 [工程材料学];

学科分类号：

082905 [生物质能源与材料];

摘要：

We fabricated highly ordered poly(vinylidene fluoride-trifluoroethylene) (PVDF-TrFE) nanowires with anisotropic piezoelectric response by using a template-free solution method. The molecular dipoles in the nanowires were preferentially oriented parallel relative to the substrate plane, while the macromolecular backbones were oriented perpendicular to the substrate plane. As the piezoelectric effect in the organic ferroelectric polymer originates from the alignment of molecular dipoles, this distinct molecular orientation gives rise to a significant difference in lateral and vertical piezoelectric responses in the nanowires. A flat-on lamellar structure and a thin layer melt crystallization nanowire formation mechanism were proposed. The results demonstrate a facile and efficient route for fabricating P(VDF-TrFE) nanowires with highly anisotropic piezoelectric response that are promising for nanoscale energy harvesting devices.

引用

页码：915 / 920

页数：6

共 20 条

[1]

Novel Technique for Polymeric Nanofibers Preparation: Air Jet Spinning [J].