Results 21 to 30 of about 114,262 (333)

Fire-induced changes in the dielectric constant of lichens in plateau palsas of the Nadym-Pur interfluve

open access: yesActa Biologica Sibirica, 2023
The paper analyzed the complex permittivity of lichens of the genus Cladonia sampled from areas disturbed by fire and from undisturbed plateau palsas in the Nadym-Pur interfluve, Western Siberia.
Tatiana D. Kochetkova   +5 more
doaj   +1 more source

Dielectric relaxation studies of binary mixture of β-picoline and methanol using time domain reflectometry at different temperatures [PDF]

open access: yesJournal of Advanced Dielectrics, 2016
Complex permittivity spectra of binary mixtures of varying concentrations of β-picoline and Methanol (MeOH) have been obtained using time domain reflectometry (TDR) technique over frequency range 10 MHz to 25 GHz at 283.15, 288.15, 293.15 and 298.15 K ...
C. M. Trivedi   +3 more
doaj   +1 more source

Using The Kramers-Kronig Transforms To Retrieve The Conductivity From The Effective Complex Permittivity [PDF]

open access: yesAdvances in Radio Science, 2018
While measuring the effective permittivity of dispersive material it may be of interest to distinguish between conductivity losses (caused by free electrons) and dielectric losses (caused by bounded electrons) which both are included in the imaginary ...
M. Bakry, L. Klinkenbusch
doaj   +1 more source

Synthesis, Characterization and Electromagnetic Properties of SnO-coated FeNi Alloy Nanocapsules [PDF]

open access: yesMaterials Research, 2016
SnO-coated FeNi alloy nanocapsules have been synthesized by an arc-discharge method. High-resolution transmission electron microscopy and x-ray photoelectron spectroscopy analysis show that the nanocapsules have a shell/core structure with FeNi alloy ...
Mingling Li   +3 more
doaj   +1 more source

Broadband Permittivity Characterization of a Substrate Material Using Deep Neural Network Trained With Full-Wave Simulations

open access: yesIEEE Access, 2022
It is crucial to know the permittivity of dielectric materials used in radio frequency (RF) components and devices because their operation frequency and loss characteristics are significantly affected by the permittivity.
Lihour Nov, Jae-Young Chung, James Park
doaj   +1 more source

Complex effective permittivity of a lossy composite material [PDF]

open access: yes, 1996
In recent work, boundary integral equations and finite elements were used to study the (real) effective permittivity for two-component dense composite materials in the quasistatic limit.
Beroual, Abderrahmane   +3 more
core   +3 more sources

Design and Fabrication of Modified SMA-Connector Sensor for Detecting Water Adulteration in Honey and Natural Latex

open access: yesApplied System Innovation, 2021
A detection system for water adulteration in honey is proposed. It consists of a modified SMA-connector sensor and a vector network analyzer. A modified SMA-connector sensor is applied to measure complex relative permittivity, electrical conductivity ...
Adisorn Nuan-On   +3 more
doaj   +1 more source

Continuous Characterization of Permittivity over a Wide Bandwidth Using a Cavity Resonator [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2020
We examine a rectangular cavity resonator method to accurately characterize the complex permittivity of dielectric materials over a wide frequency range of 1–5 GHz by exploiting the fundamental mode and higher-order TE(1,0,l) modes.
Rehab S. Hassan   +3 more
doaj   +1 more source

Effective complex permittivity tensor of a periodic array of cylinders [PDF]

open access: yes, 2013
We determine the effective complex permittivity of a two-dimensional composite, consisting of an arbitrary doubly periodic array of identical circular cylinders in a homogeneous matrix, and whose dielectric properties are complex-valued.
Godin, Yuri A.
core   +1 more source

An Open-Resonator Sensor for Measuring the Dielectric Properties of Antarctic Ice

open access: yesSensors, 2019
In this paper, the theory behind the design of a microwave sensor for the accurate measurement of firn complex permittivity is presented. This class of microwave sensors, based on the open-coaxial re-entrant cavity method, is specifically designed to ...
Roberto Olmi   +3 more
doaj   +1 more source

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