Results 31 to 40 of about 284,309 (382)

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

Electrical and electromagnetic properties of isolated carbon nanotubes and carbon nanotube-based composites [PDF]

open access: yesPolyolefins Journal, 2016
Isolated carbon nanotubes (CNTs), CNT films and CNT-polymer nanocomposites are a new generation of materials with outstanding mechanical, thermal, electrical and electromagnetic properties. The main objective of this article is to provide a comprehensive
Alireza Nikfarjam   +2 more
doaj   +1 more source

PERMITTIVITY MEASUREMENTS OF BIOLOGICAL SAMPLES BY AN OPEN-ENDED COAXIAL LINE [PDF]

open access: yes, 2020
We previously reported on the complex permittivity and dc conductivity of waste-activated sludge. The measurements, spanning a frequency range of 3MHz to 40GHz, were made using an open-ended coaxial transmission line.
J. Bobowski, T. Johnson
semanticscholar   +1 more source

BARIUM AND CALCIUM NIOBATE CERAMICS: SPECIFIC FEATURES OF THEIR STRUCTURE

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2021
We obtained and studied the samples of ceramics based on barium niobate and calcium niobate CaxBa1-xNb2O6 with different percentages of barium and calcium (x=1; 0,9; 0,8; 0,7; 0,6; 0,5; 0,4; 0,3; 0,2; 0,1 and 0).
O.S. Guseva   +3 more
doaj   +1 more source

Substances with zero static permittivity

open access: yesScientific Reports, 2022
AbstractThe structure of materials with a negative electric susceptibility has been determined. Their electrical properties correspond to vanishing static dielectric permittivity. We give a theoretical explanation of anomalous polarization of powders observed in experiments and the mechanism of emergence in an aerosol cloud of an electric field, which ...
openaire   +3 more sources

Recent progress in polymer dielectrics containing boron nitride nanosheets for high energy density capacitors

open access: yesHigh Voltage, 2020
Hexagonal boron nitride nanosheets (BNNSs) are two-dimensional nanomaterials with graphitic-like layered nanostructures, high surface areas, and large aspect ratios.
He Li   +5 more
doaj   +1 more source

Modeling of a Negative Refractive Index Metamaterial Unit-Cell and Array for Aircraft Surveillance Applications

open access: yesIEEE Access, 2022
In this paper, a unique negative refractive index-metamaterial (NRI-MTM) structure is proposed for traffic alert and collision avoidance system (TCAS) for aircraft application. The NRI-MTM unit-cell structure is a combination of square and circular split
M. Pallavi   +3 more
doaj   +1 more source

Perfect absorption and giant magnification with a thin metamaterial layer [PDF]

open access: yes, 2011
It is shown that perfect absorption and giant amplification can be realized when a wave impinges on a special metamaterial layer with zero real parts of the permittivity and permeability.
Alekseyev   +17 more
core   +3 more sources

Permittivity of Strontium Titanate

open access: yesJournal of Applied Physics, 1972
The permittivity of single-crystal single-domain strontium titanate has been measured in detail in the [001], [011], and [111] directions, as a function of temperature (from 4.2 to 300 °K), electric field (from −23 000 to +23 000 V/cm, and frequency (from 1 kHz to 50 MHz).
Neville, R. C.   +2 more
openaire   +4 more sources

Self‐Assembled Metal–Dielectric Hybrid Metamaterials in Vertically Aligned Nanocomposite Form with Tailorable Optical Properties and Coupled Multifunctionalities

open access: yesAdvanced Photonics Research, 2021
Metal–dielectric hybrid metamaterials have attracted increasing research interest in recent years because of their novel optical properties and promising applications in the fields of electronic and photonic devices.
Di Zhang, Haiyan Wang
doaj   +1 more source

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