1. Tuning the insulator to conductor transition in a multiwalled carbon nanotubes/epoxy composite at substatistical percolation threshold
- Author
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Marino Lavorgna, Gabriella Faiella, Vincenza Antonucci, Filomena Piscitelli, and Michele Giordano
- Subjects
Materials science ,Physics and Astronomy (miscellaneous) ,Composite number ,Insulator (electricity) ,Percolation threshold ,Mechanical properties of carbon nanotubes ,Epoxy ,Condensed Matter::Mesoscopic Systems and Quantum Hall Effect ,Conductor ,Optical properties of carbon nanotubes ,Condensed Matter::Materials Science ,Electrical resistivity and conductivity ,visual_art ,visual_art.visual_art_medium ,Composite material - Abstract
A fine tuning of the electrical conductivity from insulator to conductor behavior has been obtained for a multiwalled carbon nanotubes epoxy composite at a fixed substatistical percolation threshold content by varying the organization of the nanotubes network. A multiscale characterization has been carried out by transmission optical microscopy technique and small angle x-ray analysis that revealed a two level structure characterized by different topological arrangements for the micron sized clusters and nanosized isolated bundles, respectively. A picture of the multidimensional organization of the nanotubes network has been proposed to account for the observed transition modulation.
- Published
- 2009
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