Numerical simulation of electrical conductivity in microscopically inhomogeneous materials

1975 ◽  
Vol 11 (8) ◽  
pp. 2885-2892 ◽  
Author(s):  
Itzhak Webman ◽  
Joshua Jortner ◽  
Morrel H. Cohen
Keyword(s):  
Numerical Simulation ◽  
Electrical Conductivity ◽  
Inhomogeneous Materials

Spatially Resolving Impedance Spectroscopy

1995 ◽  
Vol 411 ◽  
Author(s):  
J. Jamnik ◽  
J. Fleig ◽  
J. Maier
Keyword(s):  
Electrical Conductivity ◽  
Impedance Spectroscopy ◽  
Surface Conductivity ◽  
Inhomogeneous Materials ◽  
High Impedance ◽  
Impedance Technique ◽  
Novel Variant ◽  
Set Up ◽  
Enhanced Surface ◽  
Different Parts

ABSTRACTTwo techniques for measurement of local electrical conductivity of inhomogeneous materials are described. I) A novel variant of the impedance technique for thin/thick film characterization was developed; due to the two-dimensionality of the cell set up, at different frequencies different parts of the material are probed. The technique was experimentally verified by measuring the position coordinate of a Ag strip artificially added to a AgCl film. Its application to the Ag/AgCl boundary is touched upon. II) Micro-electrodes were used to probe surface conductances and local subsurface conductivities. The technique was implemented by a home-made high impedance adapter and combined with AFM to measure the contact area. Several examples of application are shown, viz. measurements of a) the enhanced surface conductivity of mechanically polished AgCl crystals, b) the interdiffusion coefficient of Cd2+ in AgCl, and c) the grain conductivity of polycrystalline AgCl.

scholarly journals Influence of Dry Cleaning on the Electrical Resistance of Screen Printed Conductors on Textiles

2016 ◽  
Vol 16 (3) ◽  
pp. 146-153 ◽  
Author(s):  
Ilda Kazani ◽  
Gilbert De Mey ◽  
R. Klepacko ◽  
Carla Hertleer ◽  
Genti Guxho ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Electrical Conductivity ◽  
Theoretical Model ◽  
Numerical Analysis ◽  
Electrical Resistance ◽  
Mechanical Treatment ◽  
Conducting Layer ◽  
Dry Cleaning ◽  
Electrically Conducting ◽  
Screen Printed

Abstract Electrically conducting inks were screen printed on various textile substrates. The samples were dry cleaned with the usual chemicals in order to investigate the influence of the mechanical treatment on the electrical conductivity. It was found that dry cleaning has a tremendous influence on this electrical conductivity. For several samples, it is observed that the electrical resistance increases with the square of the number of dry cleaning cycles. In order to explain this observation a theoretical model and a numerical simulation have been carried out, by assuming that dry cleaning cycles introduce a crack in the conducting layer. The theoretical analysis and the numerical analysis both confirmed the experimental observations.

Carbon nanotube-filled polymer composites. Numerical simulation of electrical conductivity in three-dimensional entangled fibrous networks

2006 ◽  
Vol 54 (11) ◽  
pp. 2923-2931 ◽  
Author(s):  
Florent Dalmas ◽  
Rémy Dendievel ◽  
Laurent Chazeau ◽  
Jean-Yves Cavaillé ◽  
Catherine Gauthier
Keyword(s):  
Numerical Simulation ◽  
Electrical Conductivity ◽  
Carbon Nanotube ◽  
Polymer Composites ◽  
Three Dimensional ◽  
Filled Polymer

Numerical Simulation of the Microstructure of Structural-Inhomogeneous Materials

2020 ◽  
pp. 562-571
Author(s):  
Oleg Zabolotnyi ◽  
Viktoriya Pasternak ◽  
Igor Andrushchak ◽  
Nataliia Ilchuk ◽  
Kostiantyn Svirzhevskyi
Keyword(s):  
Numerical Simulation ◽  
Inhomogeneous Materials

Numerical Simulation of Inhomogeneous Food with Ohmic heating

2010 ◽  
Vol 6 (4) ◽  
Author(s):  
Xin Jiang ◽  
Lin Li ◽  
Wuxiong Shen ◽  
Jiahua Zhou
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Electrical Conductivity ◽  
Electric Field ◽  
Electric Conductivity ◽  
Cross Section ◽  
Thermal Processing ◽  
Food System ◽  
Ohmic Heating ◽  
Processing Technique

Ohmic heating is an emerging thermal processing technique in which electrical conductivity is one of the most important factors. Inhomogeneous cuboid food models were built with a plate inserted in the center of a food system. The effects of the plate’s electric conductivity on both the surrounding material (?p/?s) and the orientation of the plate in ohmic heating were analyzed with a finite element method. It was revealed that when the plate’s electric conductivity was lower than that of the surrounding material, the plate’s temperature was lower than the surrounding material when the biggest cross-section of the plate was parallel to the electric field. When the biggest cross-section of the plate was perpendicular to electric field, the case was more complicated. The plate’s temperature was higher than that of the surrounding material when ?p/?s was 0.1 and 0.5. The plate’s temperature was lower than that of the surrounding material when ?p/?s was 0 and 0.02. When the plate’s electric conductivity was higher than that of the surrounding material, the plate’s temperature was always lower than that of the surrounding material when the biggest cross-section of the plate was perpendicular to the electric field. When the biggest cross-section of plate was parallel to that of the electric field, the case was more complicated. The plate’s temperature was higher than that of the surrounding material when ?p/?s was 2 and 10. The plate’s temperature was lower than that of the surrounding material when ?p/?s was 50.

Sign in / Sign up

Export Citation Format

Share Document