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

János Koltai, Rusznyák Ádám, Viktor Zólyomi, Jeno Kürti, István László

Research output: Contribution to journalArticle

4 Citations (Scopus)

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. 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.

Original languageEnglish
Pages (from-to)2671-2674
Number of pages4
JournalPhysica Status Solidi (B) Basic Research
Volume246
Issue number11-12
DOIs
Publication statusPublished - Dec 1 2009

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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