Results 201 to 210 of about 192,119 (253)
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Physical Chemistry Chemical Physics, 2009
The ideal relative permittivity of liquid mixtures is demonstrated to be a volume-fraction-weighted average of the pure-component relative permittivities. This generalised-thermodynamics result is used to define the molar electric dipole, permittivity, dielectric polarization and electric susceptibility of thermodynamically ideal liquid mixtures and ...
João Carlos R, Reis +3 more
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The ideal relative permittivity of liquid mixtures is demonstrated to be a volume-fraction-weighted average of the pure-component relative permittivities. This generalised-thermodynamics result is used to define the molar electric dipole, permittivity, dielectric polarization and electric susceptibility of thermodynamically ideal liquid mixtures and ...
João Carlos R, Reis +3 more
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IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium, 2018
We apply the analytical fully coherent model to bicontinuous media for applications in microwave remote sensing of snow cover. In our model, snow is represented by bicontinuous media which is generated by a Gaussian random process. The statistical moments and correlation functions of bicontinuous media can be calculated. With the correlation functions,
Jiyue Zhu, Shurun Tan, Leung Tsang
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We apply the analytical fully coherent model to bicontinuous media for applications in microwave remote sensing of snow cover. In our model, snow is represented by bicontinuous media which is generated by a Gaussian random process. The statistical moments and correlation functions of bicontinuous media can be calculated. With the correlation functions,
Jiyue Zhu, Shurun Tan, Leung Tsang
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New Permittivity Measurement Methods Using Resonant Phenomena For High-Permittivity Materials
IEEE Transactions on Instrumentation and Measurement, 2017This paper describes the characterization of high-permittivity materials with a dielectric constant ( $\epsilon _{r}$ ) up to 3000 using resonant phenomena. We propose and demonstrate two types of measurement techniques: the rectangular resonator method by controlling the sample insertion length and the waveguide reflection method with a sample ...
Yuto Kato, Masahiro Horibe
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Biomass measurement by inductive permittivity
Biotechnology and Bioengineering, 1997An electrodeless, inductive permittivity probe is shown to reliably indicate fermentation biomass. By designing the probe based on electromagnetic induction, the electrode polarization artifact-common to electrode-based permittivity measurements of conductive solutions-is eliminated. The measurement of viable biomass concentration (X(V)) is precise and
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The permittivity of heterogeneous mixtures
Journal of Physics D: Applied Physics, 1973By using the double-ellipsoid model of Bilboul, two theoretical expressions have been derived for correlation of the permittivity of a heterogeneous mixture with the permittivities of its components for specific particle shapes. One of the equations is identical to that of Morabin et al (1967) derived under different considerations.
K Lal, R Parshad
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Microwave permittivity of dry sand
IEEE Transactions on Geoscience and Remote Sensing, 1998The relative dielectric constant, or relative permittivity, /spl epsiv/ of dry snow, is independent of frequency from about 1 MHz up to the microwave range of at least 10 GHz. New measurements of with improved accuracy were made with a specially designed resonator operating near 1 GHz.
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ENHANCING THE DIELECTRIC PERMITTIVITY OF ELASTOMERS
2008The electromechanical transduction properties of any dielectric elastomer are intrinsically regulated by the dielectric permittivity of the material. This parameter proportionally controls both the achievable active stresses and strains. Accordingly, a suitable increase of the material permittivity may provide a valuable means to improve the ...
GALLONE, GIUSEPPE CARMINE +3 more
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2023
The electromagnetic characterization of materials, also known as dielectric spectroscopy, plays a key role in many applications. Its aim is to return either the effective permittivity or the effective conductivity over frequency for a sample of the material under investigation.
Giacomo Giannetti, Ludger Klinkenbusch
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The electromagnetic characterization of materials, also known as dielectric spectroscopy, plays a key role in many applications. Its aim is to return either the effective permittivity or the effective conductivity over frequency for a sample of the material under investigation.
Giacomo Giannetti, Ludger Klinkenbusch
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Polymer-based dielectrics with high permittivity for electric energy storage: A review
Nano Energy, 2021Jun-Wei Zha +2 more
exaly