Ultra-low electrical percolation threshold in carbon-nanotube-epoxy composites
Abstract
Epoxy composites based on aligned CVD-grown multi-wall carbon nanotubes with weight fractions ranging from as low as 0.001 up to 1 wt% were produced. The resulting electrical properties were analysed by AC impedance spectroscopy. The composite conductivity σ follows a percolation scaling law of the form σ∝(p−pc)t with the critical mean concentration pc to form a conductive network of approximately 0.0025 wt% and an exponent, t, of 1.2. The...
Paper Details
Title
Ultra-low electrical percolation threshold in carbon-nanotube-epoxy composites
Published Date
Sep 1, 2003
Journal
Volume
44
Issue
19
Pages
5893 - 5899
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