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Relative permittivities of 10 organic liquids as functions of temperature
The Journal of Chemical Thermodynamics, 1993Abstract Relative permittivities are reported for 10 purified liquids as functions of temperature T . The compounds are three perfluoroalkanes, three cycloalkanes, two benzenes, and two sulfides. The results were summarized using a single polynomial in T , except for the perfluoroalkanes near the critical points.
Norman Gee, Gordon R. Freeman
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Basic principles of the calculation of the relative permittivity
1998Abstract From the preliminary discussion in Chapter 1 it is dear that the calculation of the relative permittivity, E, in terms of molecular parameters requires a study of the manner in which a vast number of particles react to the imposition of an external electric field.
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Complex relative permittivity analysis for monitoring watermelon
2017 International Symposium on Antennas and Propagation (ISAP), 2017This paper proposes a study of complex relative permittivity (∊ r =∊ r ′-j∊ r ″) for monitoring watermelon. The complex relative permittivity of peel and pulp are analyzed as variation of maturity stages and used for determining mature fruit of watermelon from the measured reflection coefficient.
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Frequency dependence of the relative permittivity of polar substances
Proceedings of the Physical Society, 1964A study of the Brownian motion of a dipolar molecule surrounded by a dispersive dielectric medium has resulted in the following generalization of Onsager's equation ( - ∞)(2* + ∞)(2 + 1)/3(2* + 1) = (4πNμ2/3kTV)((∞ + 2)2/9)(1/(1+iωτμ')) where τμ' is a microscopic relaxation time which includes the effect of dipole-dipole coupling.
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Relative Permittivity of Nanostructured Solid Solutions of Tin and Titanium Oxides
2011Impedance Spectroscopy technique was employed in order to characterize nanostructured powders based on solid solutions of SnO2 and TiO2, employed in thick-film chemoresistive gas sensors. The measurements were performed with a cylindrical capacitor, manufactured for this specific purpose, with the powders used as dielectric between the plates.
GIBERTI, Alessio +2 more
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Relative Permittivity Measurement of 3D-textile
2016The paper deals with the relative permittivity determination of the 3D-textile by a transmission line method (TLM). Measuring points are shifted to avoid inaccuracies caused by transitions between a coaxial cable and a microstrip line. A substrate where the microstrip line is designed is composed of three layers where one layer (3D-textile) has unknown
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A Simple Measurement of the Relative Permittivity of an Insulating Liquid
American Journal of Physics, 1969A simple test cell has been devised in which the charge on one plate of a parallel-plate capacitor is repeatedly transferred to a capacitor—electrostatic voltmeter combination. From the voltmeter readings as the system is operated first in air and then in an insulating liquid, the relative permittivity of the latter can be evaluated with an error of ...
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A Comprehensive Study of the Relative Dielectric Permittivity in Porous Media
Proceedings of SPE Western Regional Meeting, 2001Abstract This study investigated the effects of water saturation and wettability on the dielectric permittivity experimentally, using four-electrode impedance measurements, and theoretically, using models that account for the electrical double layer polarization. Complex impedance measurements, performed on Berea sandstone
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Polymer-based dielectrics with high permittivity for electric energy storage: A review
Nano Energy, 2021Jun-Wei Zha +2 more
exaly