Journal
JOURNAL OF APPLIED PHYSICS
Volume 119, Issue 9, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4943069
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Funding
- National Natural Science Foundation of China (NSFC) [11372238, 11302161, 11321062, 11302162]
- Chang Jiang Scholar program
- Fundamental Research Funds for the Central Universities
- China Postdoctoral Science Foundation [2015M580835]
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We experimentally studied the built-in polarization induced effective piezoelectric constant and direct flexoelectric coefficient in a-phase bulk polyvinylidene fluoride (PVDF). This phenomenon was detected and discussed based on the compression of a truncated cone. An improved mechanical formulation of flexoelectricity was presented and discussed in this study, and the experiment was carried out based on the charge measurement. From the experiment study, a flexoelectric coupling coefficient 202.3V was calculated from the flexoelectric coefficient mu(11) = 1.6 x 10(-8)C/m for bulk polyvinylidene fluoride. We measured the flexoelectric response of bulk PVDF with consideration of the residual piezoelectric contributions and geometry-dependent calibration, which affect the flexoelectric measurement. (C) 2016 AIP Publishing LLC.
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