Results 1 to 10 of about 83,550 (252)

A Concise and Time-efficient Method for Characterizing the Permittivity of Unknown Materials [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2023
We propose a simplified and time-efficient methodology to characterize the permittivity of unknown materials. Based on the transmission line method, this method enables permittivity extraction using a small number of dielectric materials under test (MUT).
Junhyuk Ahn, Youngno Youn, Wonbin Hong
doaj   +1 more source

Pattern Similarity and Gain Enhancement of Dual-Band Antenna Using an ENZ Metamaterial [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2023
A dual-band antenna with pattern similarity using the energy-squeezing mechanism of an epsilon-near-zero (ENZ) metamaterial is designed, and experimental results are presented with simulated data.
Srujana Vahini Nandigama   +3 more
doaj   +1 more source

High-Resolution Detection of Rock-Forming Minerals by Permittivity Measurements with a Near-Field Scanning Microwave Microscope

open access: yesSensors, 2022
The identification of the minerals composing rocks and their dielectric characterization is essential for the utilization of microwave energy in the rock industry.
José D. Gutiérrez-Cano   +4 more
doaj   +1 more source

Synthesis, Characterization, and Electromagnetic Wave Absorbing Properties of M12+–M24+ Substituted M-Type Sr-Hexaferrites

open access: yesApplied Sciences, 2021
Mn–Ti, Zn–Ti, Zn–Zr substituted M-type Sr-hexaferrites (SrM), SrFe12−2xM1xM2xO19 (0 ≤ x ≤ 2.0, M1 = Mn or Zn; M2 = Ti or Zr) were synthesized, and their solubility, crystalline structure, and high-frequency properties were studied.
Jae-Uk Kim, Young-Min Kang
doaj   +1 more source

Response of A Saline Solution Containing A Macromolecule To An External Electric Field [PDF]

open access: yesAUT Journal of Electrical Engineering, 2018
The dynamical behavior of a model for body fluids in response to an external electric field is computationally investigated for communication frequencies.
Sh. Nikzad, H. Noshad, M. Saviz
doaj   +1 more source

Study on detection of intracerebral hemorrhage based on frequency difference of permittivity

open access: yesFrontiers in Physics, 2023
Introduction: Current detection of intracerebral hemorrhage (ICH), whether employing Electrical Capacitance Tomography (ECT) or other electrical imaging techniques, rely on time-difference measurements.
Shixin Peng   +7 more
doaj   +1 more source

Detection of physiological concentrations of GABA using dielectric spectroscopy - A pilot study

open access: yesJournal of Electrical Bioimpedance, 2023
Gamma-aminobutyric acid (GABA) is a major inhibitory neurotransmitter that is present at a relatively low level throughout the normal adult human brain. Abnormal GABA levels are found in people with neurodegenerative disorders such as Parkinson’s disease,
Hou Jie   +2 more
doaj   +1 more source

Hysteresis properties of PIN-PMN-PT single-crystal solid solutions

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2023
The paper presents the results of a study of hysteresis properties based on analysis of dielectric hysteresis loops and temperature dependences of switchable polarization for solid solutions 24% Pb(In1/2Nb1/2)O3 – 49% Pb(Mg1/3Nb2/3)O3 – 27% PbTiO3 ...
N.N. Bolshakova   +4 more
doaj   +1 more source

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

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