Chapter

Electrical Noise Characterization of Epoxy/MWCNT Composites

12/2010; DOI:10.1007/978-94-007-1324-6_6 pp.49-53

ABSTRACT We report on electrical transport and noise processes of Epoxy/multi-wall carbon nanotube composites. The dc measurements
suggest that the investigated system can be regarded as a random resistor network in which the resistors are located at the
junctions between carbon nanotubes and the nodes are the conducting pathways connecting different junctions, namely the nanotubes
themselves. The noise-spectral density measurements reveal the existence of a threshold voltage, above which a markedly nonlinear
behavior is found and is tentatively related to the specific properties of the Epoxy-mediated contact barrier among the carbon
nanotubes.

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Keywords

conducting pathways
 
different junctions
 
electrical transport
 
Epoxy/multi-wall carbon nanotube composites
 
junctions
 
nodes
 
noise-spectral density measurements
 
random resistor network
 
specific properties