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Electronic and Mechanical Properties of Super Carbon Nanotube Networks

Published online by Cambridge University Press:  01 February 2011

Vitor R. Coluci ,
Socrates O. Dantas ,
Ado Jorio  and
Douglas s Galvao
Vitor R. Coluci
Affiliation:
coluci@ifi.unicamp.br, IFGW-UNICAMP, Campinas - Sao Paulo 13081, Brazil
Socrates O. Dantas
Affiliation:
dantas@fisica.ufjf.br, Dpto. Fisica - UFJF, Juiz de Fora - MG, 36036, Brazil
Ado Jorio
Affiliation:
adojorio@mgm.mit.edu, Dpto. Fisica - UFMG, Belo Horizonte, 30123, Brazil
Douglas s Galvao
Affiliation:
galvao@ifi.unicamp.br, IFGW-UNICAMP, Campinas - Sao Paulo, 13081, Brazil
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Abstract

Eletronic and mechanical properties of ordered carbon nanotube networks are studied using molecular dynamics simulations and tight-binding calculations. These networks are formed by single walled carbon nanotubes (SWNT) regularly connected by junctions. The use of different types of junctions (“Y”-, “X”-like junctions, for example) allows the construction of networks with different symmetries. These networks can be very flexible and the elastic deformation was associated with two main deformation mechanisms (bending and stretching ) of the constituents SWNTs. Rolling up the networks, “super” carbon nanotubes can be constructed. These super-tubes share some of the main electronic features of the SWNT which form them but important changes are predicted (e.g. reduction of bandgap value). Simulations of their deformations under tensile stress have revealed that the super-tubes are softer than the corresponding SWNT and that their rupture occur in higher strain values.

Keywords

simulationnanostructuremorphology
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 963: Symposium Q – Nanowires and Carbon Nanotubes – Science and Applications , 2006 , 0963-Q15-07
Copyright
Copyright © Materials Research Society 2007

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