Upper bound for the conductivity of nanotube networks
Citation:L. F. C. Pereira, C. G. Rocha, A. Latge, J. N. Coleman and M. S. Ferreira, Upper bound for the conductivity of nanotube networks, Applied Physics Letters, 95, 2009, 123106
Upper bound for the conductivity of nanotube networks.pdf (published (publisher copy) peer-reviewed) 80.04Kb
Films composed of nanotube networks have their conductivities regulated by the junction resistances formed between tubes. Conductivity values are enhanced by lower junction resistances but should reach a maximum that is limited by the network morphology. By considering ideal ballistic-like contacts between nanotubes, we use the Kubo formalism to calculate the upper bound for the conductivity of such films and show how it depends on the nanotube concentration as well as on their aspect ratio. Highest measured conductivities reported so far are approaching this limiting value, suggesting that further progress lies with metallic nanowires rather than carbon nanotubes.
Type of material:Journal Article
Series/Report no:Applied Physics Letters
Availability:Full text available
Subject (TCD):Nanoscience & Materials