Volume 53, Number 2, January 2001
|Page(s)||197 - 201|
|Section||Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics|
|Published online||01 December 2003|
Non-Gaussian electrical fluctuations in a quasi-2d packing of metallic beads
GRASP, Institut de Physique B5, Université de Liège - B-4000 Liège,
Corresponding author: firstname.lastname@example.org
Accepted: 15 November 2000
The electrical properties of a two-dimensional packing of metallic beads are studied. Small mechanical perturbations of the packing lead to giant voltage fluctuations. Fluctuations are found to be non-Gaussian and seem to belong to Lévy stable distributions. Anticorrelations have been also found for the sign of these fluctuations.
PACS: 45.70.-n – Granular systems / 05.40.-a – Fluctuation phenomena, random processes, noise, and Brownian motion / 81.05.Rm – Porous materials; granular materials
© EDP Sciences, 2001
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