Localized electromechanical interactions in ferroelectric P(VDF-TrFE) nanowires investigated by scanning probe microscopy

被引：15
作者：
Calahorra, Yonatan [1 ]
Whiter, Richard A. [1 ]
Jing, Qingshen [1 ]
Narayan, Vijay [2 ]
Kar-Narayan, Sohini [1 ]
机构：
[1] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB3 0FS, England
[2] Univ Cambridge, Cavendish Lab, Dept Phys, JJ Thompson Ave, Cambridge CB3 0HE, England
来源：
APL MATERIALS | 2016年 / 4卷 / 11期
基金：
英国工程与自然科学研究理事会; 欧洲研究理事会; 欧盟地平线“2020”;
关键词：
POLY(VINYLIDENE FLUORIDE); FILMS; PIEZORESPONSE; ENHANCEMENT; ORIENTATION; DIPOLE; ARRAYS; MODEL;
D O I：
10.1063/1.4967752
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We investigate the electromechanical interactions in individual polyvinylidene fluoride-trifluoroethylene nanowires in response to localized electrical poling via a conducting atomic force microscope tip. Spatially resolved measurements of piezoelectric coefficients and elastic moduli before and after poling reveal a striking dependence on the polarity of the poling field, notably absent in thin films of the same composition. These observations are attributed to the unclamped nature of the nanowires and the inherent asymmetry in their chemical and electrical interactions with the tip and underlying substrate. Our findings provide insights into the mechanism of poling/switching in polymer nanowires critical to ferroelectric device performance. (C) 2016 Author(s).
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页数：9
相关论文
共 48 条
[1]   Thermo-electromechanical Behavior of Piezoelectric Nanofibers [J].
Baniasadi, Mahmoud ;
Xu, Zhe ;
Hong, Seokjin ;
Naraghi, Mohammad ;
Jolandan, Majid Minary .
ACS APPLIED MATERIALS & INTERFACES, 2016, 8 (04) :2540-2551
[2]   High-Performance Coils and Yarns of Polymeric Piezoelectric Nanofibers [J].
Baniasadi, Mahmoud ;
Huang, Jiacheng ;
Xu, Zhe ;
Moreno, Salvador ;
Yang, Xi ;
Chang, Jason ;
Quevedo-Lopez, Manuel Angel ;
Naraghi, Mohammad ;
Minary-Jolandan, Majid .
ACS APPLIED MATERIALS & INTERFACES, 2015, 7 (09) :5358-5366
[3]   Conformational studies of poly(vinylidene fluoride), poly(trifluoroethylene) and poly(vinylidene fluoride-co-trifluoroethylene) using density functional theory [J].
Bohlen, Martin ;
Bolton, Kim .
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2014, 16 (25) :12929-12939
[4]   Piezoelectric and pyroelectric properties of ferroelectric Langmuir-Blodgett polymer films [J].
Bune, AV ;
Zhu, CX ;
Ducharme, S ;
Blinov, LM ;
Fridkin, VM ;
Palto, SP ;
Petukhova, NG ;
Yudin, SG .
JOURNAL OF APPLIED PHYSICS, 1999, 85 (11) :7869-7873
[5]   Nanostructured piezoelectric polymers [J].
Cauda, Valentina ;
Canavese, Giancarlo ;
Stassi, Stefano .
JOURNAL OF APPLIED POLYMER SCIENCE, 2015, 132 (13)
[6]   Nanoconfinement: an Effective Way to Enhance PVDF Piezoelectric Properties [J].
Cauda, Valentina ;
Stassi, Stefano ;
Bejtka, Katarzyna ;
Canayese, Giancarlo .
ACS APPLIED MATERIALS & INTERFACES, 2013, 5 (13) :6430-6437
[7]   Charge collection kinetics on ferroelectric polymer surface using charge gradient microscopy [J].
Choi, Yoon-Young ;
Tong, Sheng ;
Ducharme, Stephen ;
Roelofs, Andreas ;
Hong, Seungbum .
SCIENTIFIC REPORTS, 2016, 6
[8]   Enhancement of Local Piezoresponse in Polymer Ferroelectrics via Nanoscale Control of Microstructure [J].
Choi, Yoon-Young ;
Sharma, Pankaj ;
Phatak, Charudatta ;
Gosztola, David J. ;
Liu, Yunya ;
Lee, Joonseok ;
Lee, Byeongdu ;
Li, Jiangyu ;
Gruverman, Alexei ;
Ducharme, Stephen ;
Hong, Seungbum .
ACS NANO, 2015, 9 (02) :1809-1819
[9]   Nanoscale piezoresponse of 70 nm poly(vinylidene fluoride-trifluoro-ethylene) films annealed at different temperatures [J].
Choi, Yoon-Young ;
Hong, Jongin ;
Hong, Seungbum ;
Song, Hanwook ;
Cheong, Deok-Soo ;
No, Kwangsoo .
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS, 2010, 4 (3-4) :94-96
[10]  
Christman J. A., 1998, MRS P, V541, P617
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