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- W2009468799 abstract "1D nanostructures of soft ferroelectric materials exert promising potential in the fields of energy harvesting and flexible and printed nanoelectronics. Here, improved piezoelectric properties, energy‐harvesting performance, lower coercive fields, and the polarization orientation of poly(vinylidene fluoride–trifluoroethylene) (PVDF‐TrFE) nanotubes synthesized with nanoconfinement effect are reported. X‐ray diffraction (XRD) patterns of the nanotubes show the peak corresponding to the planes of (110)/(200), which is a signature of ferroelectric beta phase formation. Piezoforce spectroscopy measurements on the free‐standing horizontal nanotubes bundles reveal that the effective polarization direction is oriented at an inclination to the long axis of the nanotubes. The nanotubes exhibit a coercive field of 18.6 MV m −1 along the long axis and 40 MV m −1 (13.2 MV m −1 considering the air gap) in a direction perpendicular to the long axis, which is lower than the film counterpart of 50 MV m −1 . The poled 200 nm nanotubes, with 40% reduction in poling field, give larger piezoelectric d 33 coefficient values of 44 pm V −1 , compared to poled films (≈20 pm V −1 ). The ferroelectric nanotubes deliver superior energy harvesting performance with an output voltage of ≈4.8 V and power of 2.2 μW cm −2 , under a dynamic compression pressure of 0.075 MPa at 1 Hz." @default.
- W2009468799 created "2016-06-24" @default.
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- W2009468799 date "2014-07-01" @default.
- W2009468799 modified "2023-10-16" @default.
- W2009468799 title "Polarization Orientation, Piezoelectricity, and Energy Harvesting Performance of Ferroelectric PVDF-TrFE Nanotubes Synthesized by Nanoconfinement" @default.
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- W2009468799 doi "https://doi.org/10.1002/aenm.201400723" @default.
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