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The dominant role of tunneling in the conductivity of carbon nanofiber‐epoxy composites
Author(s) -
Cardoso P.,
Silva J.,
Paleo A. J.,
van Hattum F. W. J.,
Simoes R.,
LancerosMéndez S.
Publication year - 2010
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200925334
Subject(s) - epoxy , carbon nanofiber , materials science , composite material , conductivity , quantum tunnelling , dispersion (optics) , thermal conduction , nanofiber , carbon fibers , electrical resistivity and conductivity , carbon nanotube , cluster (spacecraft) , composite number , chemistry , optics , engineering , physics , electrical engineering , optoelectronics , computer science , programming language
In this work, epoxy composites reinforced with vapor‐grown carbon nanofibers were prepared by a simple dispersion method and studied in order to identify the main conduction mechanism. The samples show high electrical conductivity values. The results indicate that a good cluster distribution seems to be more important than the fillers dispersion in order to achieve high conductivity values. Interparticle tunneling has been identified as the main mechanism responsible for the observed behavior.