19 citations · 74 across the 10 of their papers we have counts for
10 papers
Exploring electrical conductivity within mesoscopic phases of semi-conducting PEDOT:PSS films by Broadband Dielectric Spectroscopy
A. N. Papathanassiou, I. Sakellis, J. Grammatikakis +2
Poly(3,4-ethylenedioxythiophene) : poly(styrene sulfonic acid (PEDOT:PSS), an optically transparent organic semi-conductor, constitutes a suspension of conducting PEDOT:PSS grains,…
Dielectric properties of Granodiorite partially saturated with water and its correlation to the detection of seismic electric signals
A. N. Papathanassiou, I. Sakellis, J. Grammatikakis
Transient electric signals emitted prior to earthquake occurrence are recorded at certain sites in the Earth's crust termed sensitive. These field observations enforce the laborato…
Long aging time thermal degradation of the ac conductivity and complex permittivity of conducting polypyrrole
I. Sakellis, A. N. Papathanassiou, J. Grammatikakis
The modification of the ac conductivity and the complex permittivity of conducting polypyrrole was monitored throughout a two years thermal aging at 343K. Reduction of the cross-ov…
Pressure dependence of the dielectric loss in semi-conducting polypyrrole aged at room temperature
I. Sakellis, A. N. Papathanassiou, J. Grammatikakis
The effect of physical aging of semi-conducting polypyrrole at ambient temperature for two years duration on the dielectric loss at various pressures is investigated. Changes of th…
Self-diffusivity as a function of density and temperature in crystalline solids and compensating rules for self-diffusion parameters in Carbon - Subgroup crystals
A. N. Papathanassiou, I. Sakellis, J. Grammatikakis
The self-diffusion coefficient of crystalline solids as a function of density and temperature may derive from thermodynamics concepts and an earlier elastic thermodynamic point def…
Negative activation volume for dielectric relaxation in hydrated rocks
A. N. Papathanassiou, I. Sakellis, J. Grammatikakis
Negative defect activation volumes are extremely rare in solids. Here, we report for the first time that this holds in a couple of hydrated rocks for dielectric relaxation by explo…