An experimental model for studying the effect of anisotropy on percolative conduction

F. Carmona , F. Barreau , P. Delhaes , R. Canet

We present preliminary measurements of the electrical conductivity of a composite made of small conducting rods in an insulating matrix. It constitutes a model material for studying the effect of anisotropy on percolation as a function of particle length to diameter ratio. We can interpret our results, especially the lowering of threshold respective to isotropic systems, by means of a geometrical argument when the ratio is high as in our experiments.

Mots clés: composite materials; electrical conductivity of solids; percolation; experimental model; anisotropy; percolative conduction; composite; model material; particle length to diameter ratio

Domaines: Articles anciens

F. Carmona, F. Barreau, P. Delhaes, R. Canet. An experimental model for studying the effect of anisotropy on percolative conduction. Journal de Physique Lettres, 1980, 41 (22), pp.531-533. ⟨10.1051/jphyslet:019800041022053100⟩. ⟨jpa-00231839⟩