Results 21 to 30 of about 2,247,954 (292)

Preparation and Electrical Properties of Insulation Paper Composed of SiO<sub>2</sub> Hollow Spheres

open access: yesEnergies, 2012
SiO<sub>2</sub> hollow spheres and low relative permittivity insulation paper handsheets composed of these SiO<sub>2</sub> hollow spheres with different weight percentages were successfully prepared. Low-content SiO<sub>2<
Chao Tang   +5 more
doaj   +1 more source

Light scattering by magnetoelectrically gyrotropic sphere with unit relative permittivity and relative permeability [PDF]

open access: yesJournal of the Optical Society of America A, 2014
An exact transition matrix was formulated for electromagnetic scattering by a sphere made of a magnetoelectrically gyrotropic material with unit relative permittivity and relative permeability. The total scattering and forward scattering efficiencies are lower when the magnetoelectric gyrotropy vector of the sphere is either coparallel or antiparallel ...
A D Ulfat, Jafri, Akhlesh, Lakhtakia
openaire   +2 more sources

Imaging the Permittivity of Thin Film Materials by Using Scanning Capacitance Microscopy

open access: yesApplied Sciences, 2022
Recently, great advances had been made by using scanning probe microscopy (SPM) to quantify the relative permittivity of thin film materials on a nanometer scale.
Yongzhen Luo   +5 more
doaj   +1 more source

Relative permittivity in the electrical double layer from nonlinear optics [PDF]

open access: yesThe Journal of Chemical Physics, 2018
Second harmonic generation (SHG) spectroscopy has been applied to probe the fused silica/water interface at pH 7 and the uncharged 11¯02 sapphire/water interface at pH 5.2 in contact with aqueous solutions of NaCl, NaBr, NaI, KCl, RbCl, and CsCl as low as several 10 μM. For ionic strengths up to about 0.1 mM, the SHG responses were observed to increase,
Mavis D. Boamah   +3 more
openaire   +3 more sources

Measurement of the effective relative permittivities of microstrip

open access: yesElectronics Letters, 1975
A new method for determining the effective relative permittivity of microstrip, even at high frequencies, is presented. Four microstrips having the same physical and geometric characteristics, but different lengths, are needed; the mismatch due to the launchers is completely overcome.
BIANCO, BRUNO, PARODI, MAURO
openaire   +2 more sources

Distortion of electric field homogeneity between two thin toroidal electrodes by a dielectric sphere [PDF]

open access: yesSerbian Journal of Electrical Engineering, 2022
We assess the influence of a radius and a relative permittivity of an isotropic dielectric sphere on electric field homogeneity. The homogenous electric field is generated using two thin toroidal electrodes, charged by equal charges of opposite ...
Mančić Žaklina J.   +2 more
doaj   +1 more source

Room temperature fabrication and post-impregnation of LMO-ST composites: Engineering and modeling of dielectric properties

open access: yesOpen Ceramics, 2023
In this work, the effect of changing the Li2MoO4-SrTiO3 (LMO-ST) compositional proportion (1–100 wt%) on the microstructure, dielectric properties, and relative density of LMO-ST composites fabricated at room temperature was investigated.
Nina Kuzmić   +4 more
doaj   +1 more source

Design and analysis of a novel compact high permittivity dielectric resonator antenna [PDF]

open access: yes, 2009
A very compact and efficient dielectric resonator antenna is proposed and investigated. The novel structure is analyzed using two numerical methods and design guidelines are established.
M.D. Rotaru   +3 more
core   +1 more source

Permittivity-asymmetric quasi-bound states in the continuum

open access: yes, 2022
Broken symmetries lie at the heart of nontrivial physical phenomena. Breaking the in-plane geometrical symmetry of optical systems allows to access a set of electromagnetic states termed symmetry-protected quasi-bound states in the continuum (qBICs ...
Andreas Aigner (14363208)   +9 more
core   +1 more source

The dielectric calibration of capacitance probes for soil hydrology using an oscillation frequency response model [PDF]

open access: yesHydrology and Earth System Sciences, 1998
Capacitance probes are a fast, safe and relatively inexpensive means of measuring the relative permittivity of soils, which can then be used to estimate soil water content.
D. A. Robinson   +6 more
doaj  

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