scholarly journals An ultra-broadband single-component fractional-order capacitor using MoS2-ferroelectric polymer composite

2018 ◽  
Vol 113 (9) ◽  
pp. 093505 ◽  
Author(s):  
Agamyrat Agambayev ◽  
Mohamed Farhat ◽  
Shashikant P. Patole ◽  
Ali H. Hassan ◽  
Hakan Bagci ◽  
...  
Keyword(s):  
Polymer Composite ◽  
Fractional Order ◽  
Single Component ◽  
Ferroelectric Polymer

scholarly journals Towards fractional-order capacitors with broad tunable constant phase angles: multi-walled carbon nanotube-polymer composite as a case study

2018 ◽  
Vol 51 (6) ◽  
pp. 065602 ◽  
Author(s):  
Agamyrat Agambayev ◽  
Karam H Rajab ◽  
Ali H Hassan ◽  
Mohamed Farhat ◽  
Hakan Bagci ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Polymer Composite ◽  
Fractional Order ◽  
Multi Walled Carbon Nanotube ◽  
Phase Angles

Ferroelectric and Luminescent Properties of Electroluminescence Devices Using Ferroelectric Polymer-Phosphor Composite Films

2008 ◽  
Vol 388 ◽  
pp. 137-140 ◽  
Author(s):  
Koji Aizawa ◽  
Yusuke Ohtani
Keyword(s):  
Polymer Composite ◽  
Remnant Polarization ◽  
Polyvinylidene Fluoride ◽  
Ferroelectric Phase ◽  
Composite Films ◽  
Luminescent Properties ◽  
Polarization Reversal ◽  
Transparent Conductive Oxides ◽  
Glass Substrates ◽  
Ferroelectric Polymer

We fabricated and characterized electroluminescence (EL) devices using ferroelectric polyvinylidene fluoride/trifluoroethylene (PVDF/TrFE) copolymer composites mixed with Mn- and Cu-activated ZnS phosphor particles. Spin-coated polymer composite films on glass substrates with transparent conductive oxides were dried at 140 oC for 1 h in vacuum due to growth of ferroelectric phase. The maximum remnant polarization and luminescence of the fabricated devices were approximately 20 μC/cm2 and 100 cd/m2, respectively. Increases of the luminescence were observed in the fabricated EL devices using PVDF/TrFE copolymer in comparison with using PVDF polymer as dielectrics. EL emission intensities were also enhanced by applying the bipolar pulses. These results suggest an effect of polarization reversal in the composite films.

Pyroelectric properties of ferroelectric‐polymer composite

1993 ◽  
Vol 74 (1) ◽  
pp. 521-524 ◽  
Author(s):  
Yuguo Wang ◽  
Weilie Zhong ◽  
Peilin Zhang
Keyword(s):  
Polymer Composite ◽  
Pyroelectric Properties ◽  
Ferroelectric Polymer

scholarly journals Application of Fractional Calculus to Modeling the Non-Linear Behaviors of Ferroelectric Polymer Composites: Viscoelasticity and Dielectricity

Membranes ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 409
Author(s):  
Ruifan Meng
Keyword(s):  
Dielectric Loss ◽  
Fractional Calculus ◽  
Polymer Composites ◽  
Fractional Order ◽  
Dielectric Constants ◽  
Viscoelastic Deformation ◽  
Ferroelectric Polymer ◽  
Linear Behavior ◽  
Dielectric Model ◽  
Non Linear

Ferroelectric polymer composites normally show non-linear mechanical and electrical behaviors due to the viscoelastic and dielectric relaxation of polymer matrixes. In this paper, a fractional calculus approach is used to describe the non-linear behavior of ferroelectric polymer composites from both viscoelastic and dielectric perspectives. The fractional elements for viscoelasticity and dielectricity are “spring-pot” and “cap-resistor”, which can capture the intermediate properties between spring and dashpot or capacitor and resistor, respectively. For modeling the viscoelastic deformation, the “spring-pot” equation is directly used as the fractional mechanical model. By contrast, for the dielectricity of ferroelectric polymer composites, which is usually characterized by dielectric constants and dielectric losses, the “cap-resistor” equation is further formulated into the frequency domain by Fourier transform to obtain the fractional order dielectric model. The comparisons with experimental results suggest that the proposed models can well describe the viscoelastic deformation as well as the frequency dependence of the dielectric constant and dielectric loss of ferroelectric polymer composites. It is noted that the fractional order dielectric model needs to be separated into two regions at low and high frequencies due to the polarization effect. Additionally, when the dipole relaxations occur at higher frequencies, the proposed model cannot describe the rise of the dielectric loss curve.

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