Investigation of the 2312 flexoelectric coefficient component of polyvinylidene fluoride: Deduction, simulation, and mensuration

Abstract Flexoelectric effects hold promising applications in sensing, actuating, and energy capturing, and thus it is demanded to measure the flexoelectric coefficient tensors of dielectric materials accurately. In this work, an approach to measuring the effective flexoelectric coefficient tensor c...

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Autores principales:	Shuwen Zhang, Kaiyuan Liu, Minglong Xu, Hao Shen, Kai Chen, Bo Feng, Shengping Shen
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/343ec2bbea5841ab84246e3c26c7b92f
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spelling	oai:doaj.org-article:343ec2bbea5841ab84246e3c26c7b92f2021-12-02T15:05:33ZInvestigation of the 2312 flexoelectric coefficient component of polyvinylidene fluoride: Deduction, simulation, and mensuration10.1038/s41598-017-03403-72045-2322https://doaj.org/article/343ec2bbea5841ab84246e3c26c7b92f2017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-03403-7https://doaj.org/toc/2045-2322Abstract Flexoelectric effects hold promising applications in sensing, actuating, and energy capturing, and thus it is demanded to measure the flexoelectric coefficient tensors of dielectric materials accurately. In this work, an approach to measuring the effective flexoelectric coefficient tensor component μ 2312 of polymeric materials is developed by imposing a torque load upon a half cylindrical specimen. It is proven that μ 2312 can be calculated by assessing the electric charge on the axial plane and the strain gradient along the radial direction, both induced by the torque. To overcome the difficulty in experimental measurements, the relationship between the strain gradient and torque is deduced theoretically and further verified with finite element analysis. This approach is applied to testing bars machined from bulk polyvinylidene fluoride (PVDF). Potential errors from the piezoelectric effects and the non-uniform strain gradient are discussed to verify the validity of the measurement. The experimental results show good reproducibility and agreement with other measured effective flexoelectric tensor components of PVDF. This work indicates a potential application of PVDF-based mechanical sensors and provides a method to investigate the effective flexoelectric coefficient component of polymers.Shuwen ZhangKaiyuan LiuMinglong XuHao ShenKai ChenBo FengShengping ShenNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Shuwen Zhang Kaiyuan Liu Minglong Xu Hao Shen Kai Chen Bo Feng Shengping Shen Investigation of the 2312 flexoelectric coefficient component of polyvinylidene fluoride: Deduction, simulation, and mensuration
description	Abstract Flexoelectric effects hold promising applications in sensing, actuating, and energy capturing, and thus it is demanded to measure the flexoelectric coefficient tensors of dielectric materials accurately. In this work, an approach to measuring the effective flexoelectric coefficient tensor component μ 2312 of polymeric materials is developed by imposing a torque load upon a half cylindrical specimen. It is proven that μ 2312 can be calculated by assessing the electric charge on the axial plane and the strain gradient along the radial direction, both induced by the torque. To overcome the difficulty in experimental measurements, the relationship between the strain gradient and torque is deduced theoretically and further verified with finite element analysis. This approach is applied to testing bars machined from bulk polyvinylidene fluoride (PVDF). Potential errors from the piezoelectric effects and the non-uniform strain gradient are discussed to verify the validity of the measurement. The experimental results show good reproducibility and agreement with other measured effective flexoelectric tensor components of PVDF. This work indicates a potential application of PVDF-based mechanical sensors and provides a method to investigate the effective flexoelectric coefficient component of polymers.
format	article
author	Shuwen Zhang Kaiyuan Liu Minglong Xu Hao Shen Kai Chen Bo Feng Shengping Shen
author_facet	Shuwen Zhang Kaiyuan Liu Minglong Xu Hao Shen Kai Chen Bo Feng Shengping Shen
author_sort	Shuwen Zhang
title	Investigation of the 2312 flexoelectric coefficient component of polyvinylidene fluoride: Deduction, simulation, and mensuration
title_short	Investigation of the 2312 flexoelectric coefficient component of polyvinylidene fluoride: Deduction, simulation, and mensuration
title_full	Investigation of the 2312 flexoelectric coefficient component of polyvinylidene fluoride: Deduction, simulation, and mensuration
title_fullStr	Investigation of the 2312 flexoelectric coefficient component of polyvinylidene fluoride: Deduction, simulation, and mensuration
title_full_unstemmed	Investigation of the 2312 flexoelectric coefficient component of polyvinylidene fluoride: Deduction, simulation, and mensuration
title_sort	investigation of the 2312 flexoelectric coefficient component of polyvinylidene fluoride: deduction, simulation, and mensuration
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/343ec2bbea5841ab84246e3c26c7b92f
work_keys_str_mv	AT shuwenzhang investigationofthe2312flexoelectriccoefficientcomponentofpolyvinylidenefluoridedeductionsimulationandmensuration AT kaiyuanliu investigationofthe2312flexoelectriccoefficientcomponentofpolyvinylidenefluoridedeductionsimulationandmensuration AT minglongxu investigationofthe2312flexoelectriccoefficientcomponentofpolyvinylidenefluoridedeductionsimulationandmensuration AT haoshen investigationofthe2312flexoelectriccoefficientcomponentofpolyvinylidenefluoridedeductionsimulationandmensuration AT kaichen investigationofthe2312flexoelectriccoefficientcomponentofpolyvinylidenefluoridedeductionsimulationandmensuration AT bofeng investigationofthe2312flexoelectriccoefficientcomponentofpolyvinylidenefluoridedeductionsimulationandmensuration AT shengpingshen investigationofthe2312flexoelectriccoefficientcomponentofpolyvinylidenefluoridedeductionsimulationandmensuration
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Investigation of the 2312 flexoelectric coefficient component of polyvinylidene fluoride: Deduction, simulation, and mensuration

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