Effect of PEO crystallization on dielectric response of PVDF / PEO @ IL coaxial electrospinning nanofiber films

2021 ◽  
pp. 51832
Author(s):  
Yong‐sheng Zhang ◽  
Cheng Yang ◽  
Wen Feng ◽  
Shan He ◽  
Jing‐hui Yang ◽  
...  
Keyword(s):  
Dielectric Response ◽  
Coaxial Electrospinning

Nonlocal dielectric response in dipolar polymers

1993 ◽  
Vol 3 (4) ◽  
pp. 503-513 ◽  
Author(s):  
M. Warner ◽  
M. E. Cates
Keyword(s):  
Dielectric Response

Enhanced dielectric response in (BEDT-TTF) (ClMeTCNQ) at the neutral-ionic phase transitions

2004 ◽  
Vol 114 ◽  
pp. 137-139
Author(s):  
Y. Takahashi ◽  
T. Hasegawa ◽  
T. Akutagawa ◽  
T. Nakamura
Keyword(s):  
Phase Transitions ◽  
Dielectric Response

DIELECTRIC RESPONSE AND ENERGY LOSS FOR AN INTERMEDIATE QUANTUM PLASMA

1979 ◽  
Vol 40 (C7) ◽  
pp. C7-513-C7-514
Author(s):  
N. E. Frankel ◽  
K. C. Hines ◽  
R. D.B. Speirs
Keyword(s):  
Energy Loss ◽  
Dielectric Response ◽  
Quantum Plasma

A Physics-Based Model for the Dielectric Response of Shaly Sands and Continuous CEC Logging

2018 ◽  
Vol 3 (59) ◽  
pp. 354-372 ◽  
Author(s):  
Denise E. Freed ◽  
◽  
Nikita Seleznev ◽  
Chang-Yu Hou ◽  
Kamilla Fellah ◽  
...  
Keyword(s):  
Dielectric Response

Remarkably improving dielectric response of polymer/hybrid ceramic composites based on 0D/2D-stacked CuO/V2C MXene heterojunction

2021 ◽  
Vol 545 ◽  
pp. 149008
Author(s):  
Qihuang Deng ◽  
Furong Zhou ◽  
Maolin Bo ◽  
Yefeng Feng ◽  
Yuehao Huang ◽  
...  
Keyword(s):  
Dielectric Response ◽  
Ceramic Composites ◽  
Polymer Hybrid ◽  
Hybrid Ceramic

scholarly journals The Primary Origin of Excellent Dielectric Properties of (Co, Nb) Co-Doped TiO2 Ceramics: Electron-Pinned Defect Dipoles vs. Internal Barrier Layer Capacitor Effect

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3230
Author(s):  
Theeranuch Nachaithong ◽  
Narong Chanlek ◽  
Pairot Moontragoon ◽  
Prasit Thongbai
Keyword(s):  
Dielectric Properties ◽  
Loss Tangent ◽  
Barrier Layer ◽  
Dielectric Response ◽  
High Resistivity ◽  
Low Loss ◽  
Rutile Tio2 ◽  
Complex Defect ◽  
Very High ◽  
Co Doped

(Co, Nb) co-doped rutile TiO2 (CoNTO) nanoparticles with low dopant concentrations were prepared using a wet chemistry method. A pure rutile TiO2 phase with a dense microstructure and homogeneous dispersion of the dopants was obtained. By co-doping rutile TiO2 with 0.5 at.% (Co, Nb), a very high dielectric permittivity of ε′ » 36,105 and a low loss tangent of tanδ » 0.04 were achieved. The sample–electrode contact and resistive outer-surface layer (surface barrier layer capacitor) have a significant impact on the dielectric response in the CoNTO ceramics. The density functional theory calculation shows that the 2Co atoms are located near the oxygen vacancy, creating a triangle-shaped 2CoVoTi complex defect. On the other hand, the substitution of TiO2 with Nb atoms can form a diamond-shaped 2Nb2Ti complex defect. These two types of complex defects are far away from each other. Therefore, the electron-pinned defect dipoles cannot be considered the primary origins of the dielectric response in the CoNTO ceramics. Impedance spectroscopy shows that the CoNTO ceramics are electrically heterogeneous, comprised of insulating and semiconducting regions. Thus, the dielectric properties of the CoNTO ceramics are attributed to the interfacial polarization at the internal insulating layers with very high resistivity, giving rise to a low loss tangent.

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