Influence of effective‐medium dielectric constant on electronic transport in an arylamine‐containing glassy polymer

1994 ◽  
Vol 65 (9) ◽  
pp. 1127-1129 ◽  
Author(s):  
M. Abkowitz ◽  
J. S. Facci ◽  
M. Stolka
Keyword(s):  
Dielectric Constant ◽  
Electronic Transport ◽  
Glassy Polymer ◽  
Effective Medium

POROUS SILICON DIELECTRIC FUNCTION MODELING FROM EFFECTIVE MEDIUM THEORIES

2002 ◽  
Vol 09 (05n06) ◽  
pp. 1631-1635 ◽  
Author(s):  
A. M. CAMPOS ◽  
J. TORRES ◽  
J. J. GIRALDO
Keyword(s):  
Dielectric Constant ◽  
Porous Silicon ◽  
Effective Medium ◽  
Visible Spectral Range ◽  
Effective Dielectric Constant ◽  
Spectral Variation ◽  
Silicon Thin Films ◽  
Effective Medium Theories ◽  
Two Samples ◽  
Homogeneous Matrix

The spectral variation of the effective dielectric constant in porous silicon thin films is modeled using effective medium theories. The pores in the material are supposed to be spheroid prolate inclusions in a homogeneous matrix. We employ modified Maxwell–Garnett and Bruggeman expressions obtained from previous work. Fitting to experimental reflectance spectra and the refractive index at the visible spectral range is satisfactory. Best results in both models are obtained using the spheroidal inclusions of 0.9 eccentricity. The best adjusted porosity values for two samples with different parameters of preparation are 47% with Bruggeman's expression and 67% with Maxwell–Garnett's expression, which are very close to the experimental ones of 44% and 67% respectively, obtained through gravimetric methods. Our model is useful for determining and for checking the influence of the preparation parameters on the optical and structural properties.

scholarly journals Electronic transport in two-dimensional high dielectric constant nanosystems

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
M. Ortuño ◽  
A. M. Somoza ◽  
V. M. Vinokur ◽  
T. I. Baturina
Keyword(s):  
Dielectric Constant ◽  
Electronic Transport ◽  
High Dielectric Constant ◽  
Two Dimensional ◽  
High Dielectric

APPLYING EFFECTIVE MEDIUM THEORY IN CHARACTERIZING DIELECTRIC CONSTANT OF SOLIDS

2012 ◽  
Vol 35 ◽  
pp. 145-153 ◽  
Author(s):  
Sucheng Li ◽  
Ruirui Chen ◽  
Shahzad Anwar ◽  
Weixin Lu ◽  
Yun Lai ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Effective Medium Theory ◽  
Effective Medium ◽  
Medium Theory

Effective-Medium Approach for Composite Materials Containing Conductive Sticks

1990 ◽  
Vol 195 ◽  
Author(s):  
A.K. Sarychev ◽  
Y.R. Smychkovich
Keyword(s):  
Dielectric Constant ◽  
Composite Materials ◽  
Percolation Threshold ◽  
Main Tool ◽  
Effective Medium ◽  
Effective Medium Approximation ◽  
Conductivity Method ◽  
Conductive Component ◽  
Effective Medium Approach ◽  
Mc Simulation

There is a growing interest in composites in which conductive component has the elongated shape (sticks) because these systems can be used to describe various physical objects [1]. The main tool to investigate the systems is MC simulation. For example in papers [2-4] the percolation threshold in such systems has been explored and it was obtained that pcα r/L, where r is the radius of stick and L is it's length. In this work, we are suggest the calculation of dielectric constant and conductivity method based on effective medium approximation.

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