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The complex permittivity of PEDOT:PSS
The Journal of Chemical Physics, 2023High permittivity materials are required for efficient organic photovoltaic devices, and the addition of the conjugated polymer composite poly(3,4-ethylenedioxythiophen) polystyrene sulfonate (PEDOT:PSS) to dielectric polymers has been shown to significantly heighten their permittivity.
Faramarz Hossein-Babaei, Ebrahim Chegini
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Optics and Spectroscopy, 2002
The permittivity of a suspension treated as a system of hard spheres is calculated in the Born approximation. The structure of the suspension is described by the Percus-Yevick correlation function. The permittivity of the system under consideration is expressed through a nonlocal susceptibility whose spatial extension is determined by the form factor ...
E. P. Obraztsov +2 more
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The permittivity of a suspension treated as a system of hard spheres is calculated in the Born approximation. The structure of the suspension is described by the Percus-Yevick correlation function. The permittivity of the system under consideration is expressed through a nonlocal susceptibility whose spatial extension is determined by the form factor ...
E. P. Obraztsov +2 more
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2023 URSI International Symposium on Electromagnetic Theory (EMTS), 2023
The paper is about the interpretation and separability of the effective permittivity in case that both the permittivity and the conductivity are dispersive and thus complex-valued. It is shown that: a) it is always possible to retrieve the static conductivity and the high-frequency (optical) permittivity from the effective permittivity; b) it is in ...
Giacomo Giannetti, Ludger Klinkenbusch
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The paper is about the interpretation and separability of the effective permittivity in case that both the permittivity and the conductivity are dispersive and thus complex-valued. It is shown that: a) it is always possible to retrieve the static conductivity and the high-frequency (optical) permittivity from the effective permittivity; b) it is in ...
Giacomo Giannetti, Ludger Klinkenbusch
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Improved Permittivity Calibration Method for Wideband In Situ Permittivity Probe
IEEE Geoscience and Remote Sensing Letters, 2013This letter discusses about an improved permittivity probe calibration method for calculating the complex permittivity of soils from reflection data over a very wide bandwidth. The accuracy of this method is demonstrated using reflection data collected from a unique wideband (10-1000 MHz) permittivity probe specifically designed for quick in situ ...
Ming Chen, Chi-Chih Chen
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Optimization Techniques on Permittivity Distribution in Permittivity Graded Solid Insulators
Conference Record of the 2006 IEEE International Symposium on Electrical Insulation, 2006We have proposed a new concept for solid insulation; an application of FGM (functionally graded materials). By controlling the distribution of dielectric permittivity inside solid insulators, we can achieve the efficient field control with keeping simple configuration of solid insulators.
Katsumi Kato +3 more
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Permittivity of Polycrystalline Material
Ferroelectrics, 2013Polycrystalline material is modeled as a close-packed structure composed of uniaxial grains (crystallites) of varying orientation, shape and size. Effective dielectric response of such systems can be described using the spectral representation. Its formal similarity to the isotropic 2–component composite provides the same description in the framework ...
A. Klíč, I. Rychetský
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The theories of complex permittivity [PDF]
Journal of Physics C: Solid State Physics, 1972 It is shown that the spectral density used by Scaife (1971) in his theory of complex permittivity is closely related to the autocorrelation function used by other authors and that both Scaife's equation and the equation in terms of autocorrelation functions follow immediately from the superposition principle.
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On retrieval of permittivity profile
Proceedings of 2001 3rd International Conference on Transparent Optical Networks (IEEE Cat. No.01EX488), 2002A new theoretical approach is proposed for solving the inverse problem of dielectric permittivity retrieval by a reflected field. It is based on the approximate solution of an integral equation, obtained by combining the integral equation for the electromagnetic field inside the object with an integral expression, which determines the diffracted field ...
Irena Yu. Vorgul +2 more
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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.
Krishan Lal, R Parshad
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Dielectric permittivity of suspensions
Journal of Experimental and Theoretical Physics, 2007A strict macroscopic analysis of the limiting long-wavelength permittivity of a model suspension is presented in which the suspension is considered as a finely dispersed system consisting of isotropic dielectric balls with piecewise-continuous radial permittivity profile. The analysis is performed within the framework of the notion of compact groups of
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