Electrical conductivity of multi-walled carbon nanotubes-SU8 epoxy composites

Grimaldi, Claudio; Mionic, Marijana; Gaal, Richard; Forró, László; Magrez, Arnaud
June 2013
Applied Physics Letters;6/3/2013, Vol. 102 Issue 22, p223114
Academic Journal
We have characterized the electrical conductivity of the composite which consists of multi-walled carbon nanotubes dispersed in SU8 epoxy resin. Depending on the processing conditions of the epoxy (ranging from non-polymerized to cross-linked), we obtained tunneling and percolating-like regimes of the electrical conductivity of the composites. We interpret the observed qualitative change of the conductivity behavior in terms of reduced separation between the nanotubes induced by polymerization of the epoxy matrix.


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