Results 21 to 30 of about 34,351 (266)

Method for Remote State Identification Snow-Ice Cover by the Ratio of Fresnel Reflection Coefficients

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2020
Introduction. Currently, the development of safe helicopter landing systems as the most complex and dangerous stage of a flight is one of the priority tasks. A significant number of companies in Russia and abroad are engaged in its solution.
V. G. Mashkov
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

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

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

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

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

Nonlinear effects in a cell with a solid electrolyte based on protonated potassium polytitanate [PDF]

open access: yesЭлектрохимическая энергетика, 2022
In this paper, the electrochemical and electrophysical properties of protonated potassium polytitanate synthesized at pH values varying from 3.11 to 8.88 depending on the magnitude of the polarization voltage and the magnitude of the measured signal were
Makarova, Anna Dmitrievna   +7 more
doaj   +1 more source

Microwave Planar Sensors for Fully Characterizing Magneto-Dielectric Materials

open access: yesIEEE Access, 2020
This paper presents two complementary split-ring resonator (CSRR)-based sensors for full characterization of magneto-dielectric materials. The first proposed sensor is designed by loading the microstrip line with a CSRR, while the second one is by ...
Wen-Sheng Zhao   +8 more
doaj   +1 more source

Peculiarities of the interface between high-permittivity dielectrics and semiconductors

open access: yesFrontiers in Materials, 2014
Replacement of the silicon dioxide thin films in metal-oxide-semiconductor structures for microelectronics with high permittivity dielectrics (high-k) is a crucial step in the further down-scaling of microelectronic devices.
Nenad eNovkovski
doaj   +1 more source

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