SUMMARY OF THE INVENTION: In short-circuited on the end of waveguide segment adjacent to korotkozamy- Catel sample of the test material is placed, and at a distance from the short-circuiting administered heterogeneity. Excite the waveguide segment swept frequency microwave signal, wherein ...
The dielectric permittivity of cementitious materials during 24 hours hydration period at a frequency of 2.45 GHz using a network analyzer with open-ended probe technique was measured. Influences of water-to-cementitious ratios, cement types, pozzolans and aggregate types are taken into consideration....
Measurement of Dielectric Properties of High-Permittivity Materials at Centimeter Wave Lengths 喜欢 0 阅读量: 13 作者:JG Powles,W Jackson 摘要: The paper gives the results of room-temperature measurements on ceramic (polycrystalline) specimens of magnesium, calcium, strontium and barium titanates at ...
B. Dou, "A new approach for measuring permittivity of dielectric materials," Journal Electromagnetic Waves and Applications, Vol. 19, No. 6, 795-810, June 2005.Qian, C. and W. B. Dou, "A new approach for measuring permittivity of dielectric material," Journal of Electromagnetic Waves and...
Effective permittivityIncreasing attention on plasmonics materials has been paid due to their exciting physical behaviors and potential applications. Here, we present the application of the Kubo formula by providing a description of the underlying mechanisms to realize the effective permittivity. We obtain...
Dielectric properties predict how nonmagnetic materials such as foods interact with electromagnetic radiation. The dielectric constant (permittivity, ε′) indicates the amount of energy stored by a specific material in a specific electric field relative to empty space, while the loss factor (ε″) ...
Dielectric permittivity A6146 Structure of solid clusters, nanoparticles, nanotubes and nanostructured materials A7115M Density functional theory, local density approximation (condensed matter electronic structure) A7115P General mathematical techniques in electronic structure calculations (condensed matter) A7730...
Description of the low field nonlinear dielectric properties of ferroelectric and multiferroic materials Ferroelectric and multiferroic materials present a nonlinear variation in their permittivity due to domain wall motion. Currently, this variation is descri... C Borderon,R Renoud,M Ragheb,... - 《...
The dielectric constant (also calledrelative permittivity) is a dimensionless number that indicates how much a material increases the capacitance of a capacitor compared to a vacuum. Vacuum has a dielectric constant of 1, which means it does not affect the capacitance at all. Air has a dielectric...
Materials having atoms with loosely bound electrons will respond faster to applied field and hence have higher permittivity. However, the dielectric breakdown strength EBD is the property of dielectrics to withstand higher electric field. Dielectric materials with strongly bound valence electrons could ...