In subject area:Chemistry The dielectric constant, also known as the relative permittivity, is a dimensionless constant that describes how a material behaves in an electric field compared to vacuum. It reflects the material's response to an electric field and is related to its polarity. ...
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The latter is expressed by a number called the dielectric constant. A common, yet notable example of a dielectric is the electrically insulating material between the metallic plates of a capacitor. The polarization of the dielectric by the applied electric field increases the capacitor's surface ...
As stated previously, the dielectric constant is a measure of the relative ratio of the speed of an electric field in a material compared to the speed of the electric field in a vacuum. Thus by definition, the dielectric constant of a vacuum is exactly 1.0. By contrast, metals have an in...
In this study, a novel method is presented to ca... YX Bian,CS Zhao,N Ma,... - 《Atmospheric Chemistry & Physics》 被引量: 66发表: 2014年 Dynamical monopoles and dipoles in a condensed molecular system: The case of liquid water We propose a definition for the dipole of an individual...
Periodic metal-dielectric structures attract substantial interest since it was previously proposed that the spontaneous emission amplification rates (the Purcell factor) in such structures can reach enormous values up to 105. However, the role of absorption in real metals has not been thoroughly consider...
The achievement of structural color has shown advantages in large-gamut, high-saturation, high-brightness, and high-resolution. While a large number of plasmonic/dielectric nanostructures have been developed for structural color, the previous approaches
range, with a dielectric constant of ε = 400 at high frequency and ε = 1500 at low frequency, respectively. The highest dielectric permittivity value at low frequency was found for the sample annealed at 500 °C for 5 h in air, which can be attributed to the presence of secondary ...
In this work, the plasticization of glycerol causes greater salt dissociation and the creation of conducting ion transfer channels within the polymer. This gives rise to an increase in the total conductivity of the SBE. Due to glycerol’s high dielectric constant, it assists in reducing the ...
chemistry and physics applications. A material’s dielectric constant value must be known before using it to make optical fibers or coaxial cables. Although the term is commonly used, it may have different mathematical connotations depending on the context of its application. The dielectric constant ...