Scaling of the electrical conductivity of granular media

Autor:	P. V. Krauzin, D. S. Goldobin
Rok vydání:	2014
Předmět:	Compressive strength Materials science Physics and Astronomy (miscellaneous) Solid-state physics Electrical resistivity and conductivity food and beverages Charge carrier Adhesion Composite material Scaling Quantum tunnelling Grain size
Zdroj:	JETP Letters. 99:273-277
ISSN:	1090-6487 0021-3640
DOI:	10.1134/s0021364014050105
Popis:	We derive the scaling properties of the dependence of the macroscopic electrical conductivity of granular media (e.g., sands) with a surface mechanism of electrical conduction on the grain size, when the medium is subjected to a given mechanical stress. In order to eliminate the influence of the inter-grain junction capacity, the direct electrical current is considered. We determine the applicability restrictions on the theory which disregards the ultimate crushing compression strength, adhesion, and the effect of charge carrier tunneling at grain junctions beyond the contact surface area. Solutions for several regular packings of grains are obtained as well.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::534e9b2dbca29371896d0d8e54cbef77 https://doi.org/10.1134/s0021364014050105 Zobrazit plný text záznamu Plný text ve formátu PDF