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Junctions of left- and right-handed chiral carbon nanotubes nanobamboo

Research output: Contribution to journalJournal article

Published

Journal publication date1/12/2009
Journalphysica status solidi (b)
Journal number11-12
Volume246
Number of pages4
Pages2671-2674
Original languageEnglish

Abstract

Single walled carbon nanotubes can be used as nanoscale reaction chambers for producing smaller nanotubes within the host tube from encapsulated fullerenes by annealing. The diameter of the host outer tube restricts the diameter of the inner tube due to van der Waals interactions, but not chirality; however, only a few chiralities are allowed for any given outer tube diameter. It is possible that inner tubes with different chiralities – or the same chirality but left- and right-handedness– can start to grow in different places at the same time. A straight junction occurs at the connection of these two tubes. The geometry of different kinds of junctions containing pentagon and heptagon defects was optimized by density functional theory. The effect of the localized states on the electronic band structure was investigated. Geometry of our (6,4) nanobamboo from two points of view. The pentagon and heptagon defects are highlighted.

Bibliographic note

23rd Winterschool on Electronic Properties of Novel Materials, Kirchberg, GERMANY, MAR 14, 2009