Results 351 to 360 of about 284,309 (382)
Some of the next articles are maybe not open access.
Permittivity of lithium hydride
Journal of the Chemical Society A: Inorganic, Physical, Theoretical, 1969The shorted-line method has been applied to the measurement of the permittivity of high-density, polycrystalline lithium hydride. Atca. 9370 MHz the permittivity was found to be 13·1. By use of this value in the Szigeti equation the effective ionic charge has been calculated to be 0·55 e.
openaire +2 more sources
IEEE Sensors Journal, 2018
In this paper, a planar microstrip sensor based on a band-stop filter for determining relative permittivity of solid materials is presented. The proposed sensor has been composed of the structure of meandered microstrip line with a T-shaped resonator and
S. Kiani +3 more
semanticscholar +1 more source
In this paper, a planar microstrip sensor based on a band-stop filter for determining relative permittivity of solid materials is presented. The proposed sensor has been composed of the structure of meandered microstrip line with a T-shaped resonator and
S. Kiani +3 more
semanticscholar +1 more source
Dipolar Correlations and the Dielectric Permittivity of Water
Physical Review Letters, 2007The static dielectric properties of liquid and solid water are investigated within linear response theory in the context of ab initio molecular dynamics. Using maximally localized Wannier functions to treat the macroscopic polarization we formulate a first-principles, parameter-free, generalization of Kirkwood's phenomenological theory.
Manu Sharma +3 more
openaire +6 more sources
Hemispherical dielectric permittivity cell
Review of Scientific Instruments, 1978A three-terminal dielectric cell based on a hemispherical design is constructed for low-temperature measurements of dielectric permittivity. The cell has a small sample volume, is geometrically stable, and shows no frequency dependence of capacitance. Measurements on test samples are presented showing both cell constant stability data and the linearity
John G. Berberian, Joseph S. Hayden
openaire +3 more sources
IEEE Transactions on Microwave Theory and Techniques, 2005
An analysis including the temperature dependence of the permittivity and loss tangent of three low-cost and high-permittivity materials (zirconium-tin-titanate, alumina, and titanium-dioxide) in the terahertz frequency range is presented. Such dielectric materials find varied applications in microwave and terahertz systems and components.
Jaime Gómez Rivas +4 more
openaire +2 more sources
An analysis including the temperature dependence of the permittivity and loss tangent of three low-cost and high-permittivity materials (zirconium-tin-titanate, alumina, and titanium-dioxide) in the terahertz frequency range is presented. Such dielectric materials find varied applications in microwave and terahertz systems and components.
Jaime Gómez Rivas +4 more
openaire +2 more sources
Permittivity at infinite frequency
Russian Journal of Physical Chemistry, 2006A method independently developed by Boyer-Donzelot and Levin for determining the permittivity at infinite frequency ɛ∞ on the basis of the concept of polarizability additivity of interatomic bonds is considered. The ɛ∞ values calculated for various chemical compounds are compared.
openaire +2 more sources
A bridge for the measurement of permittivity
Proceedings of the IEE - Part B: Radio and Electronic Engineering, 1956A description is given of a null method for the measurement of the complex permittivity of dielectrics. The direct admittance of a 3-terminal capacitor with the sample as dielectric is measured as a complex capacitance, the two components being indicated directly on two 3-terminal variable air capacitors.
openaire +2 more sources
Design and analysis of negative permittivity behaviors in barium titanate/nickel metacomposites
, 2020Zhongyang Wang +6 more
semanticscholar +1 more source