Tunable photoluminescence emissions and large dielectric constant of the electroactive poly(vinylidene fluoride–hexafluoropropylene) thin films modified with SnO2 nanoparticles

RSC Advances ◽  
2016 ◽  
Vol 6 (36) ◽  
pp. 29931-29943 ◽  
Author(s):  
Nur Amin Hoque ◽  
Pradip Thakur ◽  
Niranjan Bala ◽  
Arpan Kool ◽  
Sukhen Das ◽  
...  
Keyword(s):  
Thin Films ◽  
Dielectric Constant ◽  
Vinylidene Fluoride ◽  
Sno2 Nanoparticles ◽  
Optically Active ◽  
Dielectric Constants ◽  
Large Dielectric Constant ◽  
Nanocomposite Thin Films ◽  
Poly Vinylidene Fluoride

Fabrication of optically active, electroactive and percolative SnO2 NPs/PVDF–HFP nanocomposite thin films with remarkable dielectric constants.

In situ synthesis of Ni(OH)2nanobelt modified electroactive poly(vinylidene fluoride) thin films: remarkable improvement in dielectric properties

2015 ◽  
Vol 17 (19) ◽  
pp. 13082-13091 ◽  
Author(s):  
Pradip Thakur ◽  
Arpan Kool ◽  
Biswajoy Bagchi ◽  
Nur Amin Hoque ◽  
Sukhen Das ◽  
...  
Keyword(s):  
Thin Films ◽  
Dielectric Properties ◽  
Vinylidene Fluoride ◽  
In Situ Synthesis ◽  
Dielectric Constants ◽  
Remarkable Improvement ◽  
Poly Vinylidene Fluoride

Development of Ni(OH)2nanobelt modified electroactive PVDF thin films with colossal dielectric constantsviaa simplein situprocess.

Preparation, Morphology and Dielectric Properties of Polyamide-6/Poly(Vinylidene Fluoride) Blends

2012 ◽  
Vol 496 ◽  
pp. 263-267
Author(s):  
Rui Li ◽  
Jian Zhong Pei ◽  
Yan Wei Li ◽  
Xin Shi ◽  
Qun Le Du
Keyword(s):  
Dielectric Constant ◽  
Dielectric Properties ◽  
Flexible Electronics ◽  
High Dielectric Constant ◽  
Vinylidene Fluoride ◽  
Volume Fraction ◽  
Polyamide 6 ◽  
Dielectric Constants ◽  
Poly Vinylidene Fluoride ◽  
High Dielectric

A novel all-polymeric material with high dielectric constant (k) has been developed by blending poly (vinylidene fluoride) (PVDF) with polyamide-6 (PA6). The dependence of the dielectric properties on frequency and polymer volume fraction was investigated. When the volume fraction of PA6 is 20%, the dielectric property is better than others. The SEM investigations suggest that the enhanced dielectric behavior originates from significant interfacial interactions of polymer-polymer. The XRD demonstrate that the PA6 and PVDF affect the crystalline behavior of each component. Furthermore, the stable dielectric constants of the blends could be tuned by adjusting the content of the polymers. The created high-k all-polymeric blends represent a novel type of material that are simple technology and easy to process, and is of relatively high dielectric constant, applications as flexible electronics.

Fabrication and Characterization of CoFe2O4-Polymer Nanocomposite Thin-Films

2013 ◽  
Vol 1507 ◽  
Author(s):  
Xiaohua Liu ◽  
Shuangyi Liu ◽  
Stephen O’Brien
Keyword(s):  
Thin Films ◽  
Magnetic Particles ◽  
Cobalt Ferrite ◽  
Vinylidene Fluoride ◽  
Structural Information ◽  
Effective Permittivity ◽  
Polymer Nanocomposite ◽  
Magnetic Devices ◽  
Nanocomposite Thin Films ◽  
Poly Vinylidene Fluoride

ABSTRACTMagnetic cobalt ferrite nanoparticles provide a pathway towards nanocomposites, due to the ability to fabricate particle-matrix thin films in the submicron range. In this work flexible particulate 0-3 type thin-films, composed of magnetic CoFe2O4 particles (8-18 nm) and ferroelectric poly(vinylidene fluoride-co-hexafluoropropene) (P(VDF-HFP)) polymer, have been fabricated via multiple spin-coating. The thickness of the thin-films was controlled in the range of 500 nm to 1.2 μm, with magnetic particles dispersively embedded in the polymer matrix. Structural information was analyzed by TEM, XRD, HRTEM and SEM. The dielectric and magnetic properties of the cobalt ferrite/copolymer thin films are systematically investigated. The nanocomposite thin films exhibit composition-dependent effective permittivity and loss tangent, as well as temperature and composition-dependent specific saturation magnetization (Ms). The coercivity (Hc) was not affected by the composite’s composition. These films have great potential in smart magnetic devices and biomagnetic applications.

Effect of in situ synthesized Fe2O3and Co3O4nanoparticles on electroactive β phase crystallization and dielectric properties of poly(vinylidene fluoride) thin films

2015 ◽  
Vol 17 (2) ◽  
pp. 1368-1378 ◽  
Author(s):  
Pradip Thakur ◽  
Arpan Kool ◽  
Biswajoy Bagchi ◽  
Sukhen Das ◽  
Papiya Nandy
Keyword(s):  
Thin Films ◽  
Dielectric Properties ◽  
Vinylidene Fluoride ◽  
Dielectric Constants ◽  
Β Phase ◽  
Poly Vinylidene Fluoride

In situsynthesis of Fe2O3–Co3O4nanoparticles stabilized electroactive PVDF thin films with colossal dielectric constants.

Dielectric Behavior of PVDF/PP-PT Nanocomposite Thin Films

2014 ◽  
Vol 1002 ◽  
pp. 11-16
Author(s):  
Ting Ting Yu ◽  
Zhao Hui Ren ◽  
Si Min Yin ◽  
Xin Yang ◽  
Yi Feng Yu ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Dielectric Constant ◽  
Vinylidene Fluoride ◽  
Low Frequency ◽  
Weight Ratio ◽  
Dielectric Behavior ◽  
Β Phase ◽  
Nanocomposite Thin Films ◽  
Coating Method

PVA/PVP-assisted hydrothermal method was used to prepare single-crystal pre-perovskite PbTiO3(PP-PT) nanofibers, in which polyvinyl alcohol (PVA) and polyvinyl pyrrolidone (PVP) acted as surfactants. Subsequently, poly (vinylidene fluoride)/ pre-perovskite PbTiO3nanofibers (PVDF/PP-PT) nanocomposite thin films were successfully fabricated by a spin-coating method. The test results showed that PP-PT nanofibers had a good distribution in PVDF matrix. Moreover, α-phase coexisted with β-phase in the PVDF and PVDF/PP-PT nanocomposite thin films. The dielectric properties of the PVDF/PP-PT nanocomposite thin films were measured as a function of frequency in the range of 5 kHz to 5 MHz. It is worth noting that the dielectric constant of nanocomposite thin films increased with increasing the weight ratio of PP-PT nanofibers in the low frequency range. By contrast, the dielectric constant of PVDF/PP-PT nanocomposite thin film which contained 20% PP-PT nanofibers was 43.7% larger than that of pure PVDF thin film (εr= 6.77) at 5 kHz, and the loss tangent was ~0.03.

Improving the thermal stability, electroactive β phase crystallization and dielectric constant of NiO nanoparticle/C–NiO nanocomposite embedded flexible poly(vinylidene fluoride) thin films

RSC Advances ◽  
2016 ◽  
Vol 6 (31) ◽  
pp. 26288-26299 ◽  
Author(s):  
Pradip Thakur ◽  
Arpan Kool ◽  
Nur Amin Hoque ◽  
Biswajoy Bagchi ◽  
Swagata Roy ◽  
...  
Keyword(s):  
Thin Films ◽  
Thermal Stability ◽  
Dielectric Constant ◽  
Vinylidene Fluoride ◽  
Β Phase ◽  
Poly Vinylidene Fluoride ◽  
Phase Nucleation ◽  
Nio Nps ◽  
High Dielectric

Increasing β phase nucleation and formation of microcapacitors in flexible high dielectric NiO NPs/C–NiO NCs modified PVDF films.

Sign in / Sign up

Export Citation Format

Share Document