Results 271 to 280 of about 118,060 (323)

The relative permittivity of supercooled water

The Journal of Chemical Physics, 1978
Approximate relative permittivity data for water down to −35°C have been derived from measurements of the Maxwell–Wagner interfacial polarization which occurs at the surface of emulsified water droplets. Although the emulsifying agent strongly influences this polarization in a complex way, a novel method of data analysis enables the permittivity and ...
I. M. Hodge, C. A. Angell
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Measurements of Microstrip Effective Relative Permittivities

IEEE Transactions on Microwave Theory and Techniques, 1987
This paper presents normalized wide-bandwidth measurements of microstrip effective relative pemrittivities (epsilon/sub eff/) which were made on large-scale microstrip models. The experimental techniques are discussed, and the data are compared to the predictions of two recent closed-form design equations.
S. Deibele, J.B. Beyer
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Converse flexoelectricity with relative permittivity gradient

Applied Physics Letters, 2019
Flexoelectricity represents the linear relationship between the strain/electric gradient field and the induced electric polarization/mechanical stress in dielectric materials. This electro-mechanical behavior is important for prospective applications due to its size effect and other advantages. In this work, a converse flexoelectric effect is generated
Shuwen Zhang, Kaiyuan Liu, Xin Wen, Tonghui Wu, Minglong Xu, Shengping Shen   +5 more
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Relative permittivity detector for cable insulators

PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409), 2002
This paper presents a new measurement technique of relative permittivity (/spl epsi//sub r/) for cable insulators. The travelling wave and reflection wave theory are applied to generate low voltage pulse signal feeding cable lines that need to know /spl epsi//sub r/ of insulators.
P. Kerdonfag, S. Potivejkul, S. Jamnian, V. Kinnares   +3 more
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Static relative permittivity of electrolyte solutions

Electrochimica Acta, 1988
Abstract An equation has been derived for the calculation of static relative permittivity in concentrated electrolyte solutions, which takes into account both the volume exclusion by the ions and the effect of dielectric saturation caused by the strong electric field of the ions.
Jánoz Liszi, Attila Felinger, Erzsébet H. Kristóf   +2 more
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Magnetically active composites with relatively giant dielectric permittivity

Romanian Reports in Physics, 2023
"Magnetically active composites based on silicone rubber, silicone oil, carbonyl microparticles, graphene nanopallets and fabric, as a reinforcing element, are manufactured. For a constant amount of carbonyl iron microparticles and silicone oil, and for different ratios between the amounts of silicone rubber and graphene nanopalets, three composite ...
M. BUNOIU, G.-E. IACOBESCU, G. PASCU, L. CHIRIGIU, I. BICA   +4 more
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Electrical conductivity and relative permittivity of KHCO3

Physica Status Solidi (a), 1994
The electrical conductivity σ and the relative permittivity (κ) as function of temperature 300 K < T < 400 K are measured and presented for potassium hydrogen carbonate KHCO3. It seems likely that the compound undergoes tow structural phase transitions at ≈ 318 and ≈ 365 K.
M. M. Abdel-Kader, M. Fadly, M. Abu Taleb, K. Eldehamy, A. I. Ali   +4 more
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The permittivity of thermodynamically ideal liquid mixtures and the excess relative permittivity of binary dielectrics

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, T P, Iglesias, Gérard, Douhéret, Michael I, Davis   +3 more
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Relative complex permittivity and its dependence on frequency

World Journal of Engineering, 2017
Purpose This paper aims to give a brief overview of dielectric properties, relative complex permittivity and its dependence on frequency. The significance of different approaches to complex permittivity is also discussed. Design/methodology/approach The different mechanisms of polarization are then presented.
Giannoukos, Georgios, Min, Mart, Rang, Toomas   +2 more
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Relative Static Permittivity of Dimethyl Sulfoxide + Water Mixtures

Journal of Chemical & Engineering Data, 2013
The dielectric spectra corresponding to the static regime of dimethyl sulfoxide + water mixtures were recorded in the whole concentration range and in the temperature range from (253.15 to 333.15) K. For the mixtures rich in DMSO (0.60 < xDMSO ≤ 1, x = mole fraction) and rich in water (0 ≤ xDMSO < 0.1), it was possible to perform the investigations ...
Iwona Płowaś, Jolanta Świergiel, Jan Jadżyn   +2 more
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