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DY: Fachverband Dynamik und Statistische Physik

DY 40: Posters II

DY 40.17: Poster

Donnerstag, 17. März 2011, 17:00–19:00, P3

Resistance in percolating quasi 1D and 2D networks of nanofibers — •Milan Žeželj, Igor Stanković, and Aleksandar Belić — Institute of Physics Belgrade, University of Belgrade, Pregrevica 118, 11080 Belgrade, Serbia

The scaling laws describing the conductivity in random networks of straight conducting nanofibers are derived from percolation theory and verified in numerical simulations. The applicability of the scaling laws to complex structures of interconnected networks of carbon nanofiber films and thick 1D wires is investigated in mesoscopic simulations. The current transfer in composite materials is found to be strongly enhanced by self-organization of nanofibers. The electrical conductivity of nanofiber films varies by orders of magnitude depending on the aspect ratio of the nanofibers, density and their structural arrangement in the material.