Results 51 to 60 of about 315,046 (231)

Electrical permittivity and resistivity time lapses of multiphase DNAPLs in a lab test [PDF]

open access: yes, 2014
Dense Non-Aqueous Phase Liquids (DNAPLs) induce variation in electromagnetic characteristics of the ground e.g. electric permittivity and resistivity.
Orlando, Luciana, Renzi, Beatrice
core   +2 more sources

A Microwave Frequency Range Experiment for the Measurement of Snow Density and Liquid Water Content

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
This article presents a new nondestructive characterization system for the extraction of both snow density and liquid water content (LWC). The experiment primarily measures the relative complex permittivity of snow ($\overline {{{\boldsymbol{\varepsilon }
Cedric Bermond   +2 more
doaj   +1 more source

Electric-Field Noise above a Thin Dielectric Layer on Metal Electrodes [PDF]

open access: yes, 2015
The electric-field noise above a layered structure composed of a planar metal electrode covered by a thin dielectric is evaluated and it is found that the dielectric film considerably increases the noise level, in proportion to its thickness. Importantly,
Blatt, Rainer   +4 more
core   +3 more sources

Measurement of Nonplanar Dielectric Samples Using an Open Resonator [PDF]

open access: yes, 1987
Conventional microwave methods for measuring permittivity often utilize samples in flat sheet form. In practice, however, it is sometimes desirable to measure samples having curved surfaces, for example, parts of lenses or small radomes.
Chambers, B., Chan, W.F.P.
core  

Verification of a localization criterion for several disordered media

open access: yes, 1999
We analytically compute a localization criterion in double scattering approximation for a set of dielectric spheres or perfectly conducting disks uniformly distributed in a spatial volume which can be either spherical or layered.
Arya K   +8 more
core   +1 more source

Thickness optimization of a double-layered microwave absorber combining magnetic and dielectric particles

open access: yesMaterials Research Express, 2021
The purpose of this study is to optimize the thickness of the double-layered microwave absorber for obtaining the highest absorption. The graphenic-based carbon compounds and Fe _3 O _4 magnetic particles were combined to fabricate the double-layered ...
Affandi Faisal Kurniawan   +5 more
doaj   +1 more source

Analysis of broadband microwave conductivity and permittivity measurements of semiconducting materials

open access: yes, 2008
We perform broadband phase sensitive measurements of the reflection coefficient from 45 MHz up to 20 GHz employing a vector network analyzer with a 2.4 mm coaxial sensor which is terminated by the sample under test.
Elvira Ritz   +5 more
core   +1 more source

Nonlinear dynamics of polar regions in paraelectric phase of (Ba1-x,Srx)TiO3 ceramics [PDF]

open access: yes, 2017
The dynamic dielectric nonlinearity of barium strontium titanate (Ba1-x,Srx)TiO3 ceramics is investigated in their paraelectric phase. With the goal to contribute to the identification of the mechanisms that govern the dielectric nonlinearity in this ...
Damjanovic, Dragan, Hashemizadeh, Sina
core   +2 more sources

Analysis of glucose‐dependent dielectric properties of aqueous‐based solution: A proof of concept

open access: yesIET Science, Measurement & Technology, 2021
In spite of widespread research and exploration, the status of non‐invasive blood glucometer for diabetic people is far from satisfactory. This unlocks the prospect for further significant research in the field of non‐invasive blood glucose sensing.
Satish, Kushal Sen, Sneh Anand
doaj   +1 more source

Dielectric Performance of Natural- and Synthetic-Ester-Based Nanofluids with Fullerene Nanoparticles

open access: yesEnergies, 2022
According to the latest research, nanofluids as a possible future substitution for high-voltage equipment insulation have the potential to enhance the heat transfer and insulation properties of their base fluids.
Miloš Šárpataky   +4 more
doaj   +1 more source

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