Results 1 to 10 of about 31,580 (164)

Dynamic variation of the dielectric permittivity of elastomers with mechanical constraints

open access: yesAIP Advances, 2023
Elastomers are commonly used as insulators or actuators in important fields such as robotics and electronics. The performance of elastomers is strongly influenced by their dielectric permittivity while determining the dielectric permittivity of ...
Pan Jia, Xianghe Zheng, Jianyou Zhou
doaj   +1 more source

THE ANOMALOUS RISE OF CAPACITANCE OF C60 FULLERITE FILMS AT LOW FREQUENCIES: A CAUSE ANALYSIS

open access: yesSt. Petersburg Polytechnical University Journal: Physics and Mathematics, 2021
A known physical fact of the anomalous rise of dielectric permittivity ε of C60 fullerite films at ac low frequencies (below 1 kHz) has not had a convincing explanation up to now. Our study was aimed at elucidating the causes of that anomaly.
Dolzhenko Dmitry   +2 more
doaj   +1 more source

Temperature‐dependent partial discharge characteristics of high temperature materials at DC voltage for hybrid propulsion systems

open access: yesHigh Voltage, 2021
The safe and reliable operation of insulation material used in key high voltage components under extreme environmental conditions represents the major concerns for manufacturers and operators of More Electric Aircrafts (MEA).
Tohid Shahsavarian   +5 more
doaj   +1 more source

Complex Permittivity Measurement System for Solid Materials Using Complementary Frequency Selective Surfaces

open access: yesIEEE Access, 2020
This paper describes a novel method of characterizing complex permittivity using a complementary frequency selective surface (CFSS). The CFSS provides a passband behavior and the change in the passband when a material under test (MUT) is placed adjacent ...
Chih-Kuo Lee   +5 more
doaj   +1 more source

RESONANCE PROPERTIES OF AN X-BAND RECTANGULAR WAVEGUIDE SECTION WITH AN INHOMOGENEOUS DIELECTRIC INSET [PDF]

open access: yesRadio Physics and Radio Astronomy, 2022
Subject and Purpose. In modern dielectrometry, the problem of detecting foreign inclusions in a radio-transparent material, which are significantly smaller than the operational wavelength, remains very important. The problem becomes even more complicated
I. V. Ivanchenko   +3 more
doaj   +1 more source

Enhancing discharged energy density and suppressing dielectric loss of poly(vinylidene fluoride-ter-trifluoroethylene-ter-chlorofluoroethylene) by a sandwiched structure

open access: yesIET Nanodielectrics, 2018
Polymer dielectrics with high energy density and low dielectric loss are highly desired due to the rapid development of electric devices. Among known polymers, poly(vinylidene fluoride-ter-trifluoroethylene-ter-chlorofluoroethylene) P(VDF-TrFE-CFE) is ...
Yingke Zhu, Pingkai Jiang, Xingyi Huang
doaj   +1 more source

Prediction of Electric Permittivity of Threads in Woven Fabric

open access: yesAUTEX Research Journal, 2018
In the article, a new method for the estimation of electric permittivity of threads (filaments) was presented. The proposed recursive method is based on the results of computer simulation of 3D model of transmission stripline. This model contains a model
Leśnikowski Jacek
doaj   +1 more source

PVC nanocomposites for cable insulation with enhanced dielectric properties, partial discharge resistance and mechanical performance

open access: yesHigh Voltage, 2020
The current study aims to develop polyvinyl chloride (PVC) nanocomposites with enhanced electrical and mechanical properties by incorporating titanium oxide (TiO(2)) nanoparticles within PVC chains.
Nagat M.K. Abdel-Gawad   +5 more
doaj   +1 more source

Rigid/flexible molecular structure‐induced polyimide aerogels with ultralow permittivity and thermal insulation properties

open access: yesIET Nanodielectrics, 2023
A series of high‐performance linear and cross‐linked polyimide (PI) aerogels with different molecular structures have been successfully synthesised using the freeze‐drying process.
Xiaodi Dong   +5 more
doaj   +1 more source

The tunable permittivity of multi-walled carbon nanotubes/silver nanoparticles reinforced polyvinyl alcohol (PVA) nanocomposites at low frequency

open access: yesMaterials Research Express, 2018
This paper is about tailoring high permittivity of multi-walled carbon nanotubes/silver nanoparticles (MWNT-AgNP) filled polyvinyl alcohol (PVA) nanocomposites at low frequency. PVA/MWNT-AgNP nanocomposites were synthesized via solution-casting technique
Yusliza Yusof   +3 more
doaj   +1 more source

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