Results 1 to 10 of about 67,594 (314)

On the permittivity of titanium dioxide [PDF]

open access: yesScientific Reports, 2021
AbstractConductive rutile TiO2 has received considerable attention recently due to multiple applications. However, the permittivity in conductive, reduced or doped TiO2 appears to cause controversy with reported values in the range 100–10,000. In this work, we propose a method for measurements of the permittivity in conductive, n-type TiO2 that ...
Bonkerud, Julie   +4 more
openaire   +4 more sources

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

Permittivity-Asymmetric Quasi-Bound States in the Continuum

open access: yes, 2023
Breaking the in-plane geometric symmetry of dielectric metasurfaces allows us to access a set of electromagnetic states termed symmetry-protected quasi-bound states in the continuum (qBICs).
Andreas Aigner (14363208)   +9 more
core   +1 more source

Permittivity-asymmetric quasi-bound states in the continuum

open access: yes, 2022
Broken symmetries lie at the heart of nontrivial physical phenomena. Breaking the in-plane geometrical symmetry of optical systems allows to access a set of electromagnetic states termed symmetry-protected quasi-bound states in the continuum (qBICs ...
Andreas Aigner (14363208)   +9 more
core   +1 more source

Numerical investigation on compact multimode dielectric resonator antennas of very high permittivity [PDF]

open access: yes, 2008
Two well known numerical techniques, the Finite Element Method (FEM) and the Finite Integration in Time Domain (FIT), have been applied to study a low volume high permittivity dielectric resonator antenna.
Rotaru, M.   +4 more
core   +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

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

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