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Adv Mater. 2016 Sep;28(35):7633-9. doi: 10.1002/adma.201506381. Epub 2016 Jun 30.

Shear Piezoelectricity in Poly(vinylidenefluoride-co-trifluoroethylene): Full Piezotensor Coefficients by Molecular Modeling, Biaxial Transverse Response, and Use in Suspended Energy-Harvesting Nanostructures.

Author information

1
CNR-NANO, Istituto Nanoscienze, Euromediterranean Center for Nanomaterial Modelling and Technology (ECMT), via Arnesano I, 73100, Lecce, Italy. luana.persano@nano.cnr.it.
2
CNR-NANO, Istituto Nanoscienze, Centro S3, via Campi 213, I-41125, Modena, Italy.
3
Department of Materials Science and Engineering, Frederick Seitz Materials Research Laboratory, Beckman Institute for Advanced Science, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
4
The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
5
Harvard Society of Fellows, Harvard University, Cambridge, MA, 02138, USA.
6
Department of Civil and Environmental Engineering and Department of Mechanical Engineering, Northwestern University, Evanston, IL, 60208, USA.
7
Department of Engineering Mechanics, Center for Mechanics and Materials, Tsinghua University, Beijing, 100084, China.
8
College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin, 150001, China.
9
CNR-NANO, Istituto Nanoscienze, Euromediterranean Center for Nanomaterial Modelling and Technology (ECMT), via Arnesano I, 73100, Lecce, Italy.
10
Dipartimento di Matematica e Fisica "Ennio De Giorgi", Università del Salento, via Arnesano, I-73100, Lecce, Italy.

Abstract

The intrinsic flexible character of polymeric materials causes remarkable strain deformations along directions perpendicular to the applied stress. The biaxial response in the shear piezoelectricity of polyvinylidenefluoride copolymers is analyzed and their full piezoelectric tensors are provided. The microscopic shear is exploited in single suspended nanowires bent by localized loading to couple flexural deformation and transverse piezoelectric response.

KEYWORDS:

electromechanical coupling; electrospinning; piezoelectric properties; polymer nanofibers

PMID:
27357595
DOI:
10.1002/adma.201506381

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