Fig. 2: The correlation among charge density, dielectric, and electrostrictive properties. | Nature Communications

Fig. 2: The correlation among charge density, dielectric, and electrostrictive properties.

From: Ultra-high electrostriction and ferroelectricity in poly (vinylidene fluoride) by ‘printing of charge’ throughout the film

Fig. 2

A Scheme of the storing mechanism of printed charge during the printing process. B The TSC curve for the printed (red) and casted (black) PVDF film, respectively. C The KPFM potential Vsurf, tested on both sides of the printed PVDF films with varied film thickness t, along with the red column showing each sample’s relative permittivity ɛr. D The KPFM potential test results for samples with lower relative permittivity. E The relative permittivity and β fraction of the PVDF films with varied concentrations (from 10 to 14 wt%) in NMP solvent. F The polarization hysteresis analysis of the printed PVDF sample with εr = 8.8. G The polarization hysteresis analysis of printed PVDF sample with εr = 56. H The relationship between electrostrictive coefficient M33 and the relative permittivity εr in the EHD printed PVDF films.

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