Results 1 to 10 of about 34,351 (266)

A Fractional Model of Complex Permittivity of Conductor Media with Relaxation: Theory vs. Experiments

open access: yesFractal and Fractional, 2022
Moving from the study of plasmonic materials with relaxation, in this work we propose a fractional Abraham–Lorentz-like model of the complex permittivity of conductor media.
Armando Ciancio   +3 more
doaj   +1 more source

Ionic Transportation and Dielectric Properties of YF3:Eu3+ Nanocrystals

open access: yesNanomaterials, 2018
The ionic transportation and dielectric properties of YF3:Eu3+ nanocrystals are investigated by AC impedance spectroscopy. The ion diffusion coefficient and conductivity increase along with the doping concentration and reach their highest values at 4% of
Xiaoyan Cui   +8 more
doaj   +1 more source

Dielectric Properties and Fire Safety of Mineral Oil and Low-Viscosity Natural Ester Mixtures in Various Concentrations

open access: yesEnergies, 2023
This paper presents the results of testing the electrical and fire properties of mineral oil and low-viscosity natural ester mixtures. Properties such as breakdown voltage, relative permeability, dispersion coefficient, conductivity, flash and burn point,
Grzegorz Dombek, Jarosław Gielniak
doaj   +1 more source

PVDF-based dielectric polymers and their applications in electronic materials

open access: yesIET Nanodielectrics, 2018
The attractive dielectric poly(vinylidene fluoride) (PVDF) and its copolymers are well confirmed possessing the highest electroactive response including dielectric constant, piezoelectric and ferroelectric effects, which have increasingly wide range of ...
Weimin Xia, Zhicheng Zhang
doaj   +1 more source

Sensitivity and Accuracy of Dielectric Measurements of Liquids Significantly Improved by Coupled Capacitive-Dependent Quartz Crystals

open access: yesSensors, 2021
A method to measure complex permittivity of liquids by using a capacitive-dependent quartz crystal and two quartz oscillators for temperature compensation in the frequency range of 4–10 MHz is described.
Vojko Matko, Miro Milanovič
doaj   +1 more source

Tailoring the dielectric properties of pyrochlore free lead zirconium titanate by synthesising it through different synthesis routes

open access: yesThe Journal of Engineering, 2014
The structural and dielectric properties of lead zirconium titanate (PZT) (52:48) ceramic prepared from different synthesis route are discussed in this paper.
Pragati S. Jadhav   +3 more
doaj   +1 more source

Heat-conducting and dielectric characteristics of polyorganosiloxane composites

open access: yesMagazine of Civil Engineering, 2023
The article considers the actual problem of improving the physico-mechanical, thermophysical and electrical properties of polyorganosiloxane coatings. In this article, we propose a method for obtaining a multifunctional heat-resistant composition based ...
Chukhlanov Vladimir   +3 more
doaj   +1 more source

Thermal Effect of Microwave Radiation on Dactylopius opuntiae in Morocco and Coaxial Probe for Permittivity Measurements

open access: yesIEEE Access
Dactylopius opuntiae (D. opuntiae), commonly referred to as cochineal scale insect or wild cochineal, poses a considerable risk to cactus plantations globally.
Fatima Zahrae El Arroud   +7 more
doaj   +1 more source

Guided-Wave Properties of Slow-Wave Substrate-Integrated Waveguide Patterned with Non-Uniform Metasurface Unit Cells with Various Degrees of Rotation

open access: yesPhotonics, 2023
A novel slow-wave waveguide structure is proposed, the guided-wave properties of which can be controlled by the rotation of nonuniform metasurface elements loaded on the surface of the substrate-integrated waveguide.
Hailu Jin, Xiaorong Jing, Ping Wang
doaj   +1 more source

Synthesis, characterization, and microwave properties of polypyrrole/molybdenum trioxide composites

open access: yesScience and Engineering of Composite Materials, 2014
Polypyrrole/molybdenum trioxide (MoO3) composites have been prepared by the in situ polymerization technique. The prepared composites were characterized by Fourier transform infrared spectroscopy and surface morphology by employing scanning electron ...
Anuradha Sindi   +2 more
doaj   +1 more source

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