Coiled carbon nanotube structures with supraunitary nonhexagonal to hexagonal ring ratio

L. Bíró, G. Márk, Antal A. Koós, János B.Nagy, Philippe Lambin

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

By assembling azulene units (fused pentagon-heptagon pairs) and hexagons, and applying specific wrapping rules to these structures resembling some recently-proposed Haeckelite structures [Terrones et al., Phys. Rev. Lett. 84, 1716 (2000)], a large variety of toroidal, coiled, screwlike, and double-helix structures can be generated. In particular, the coiling appears naturally by rolling up stripes made of heptagons, hexagons and pentagons. In the structures examined here, the ratio of nonhexagonal rings to hexagonal units varies from 4: 1 to 4: 3. In the coiled nanotubes produced actually by catalytic chemical vapor deposition, it is not impossible that such a high concentration of nonhexagonal units in the nanotube structure be the result of a fast kinetic leading to metastable states that cannot anneal out due to the low growth temperatures used.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume66
Issue number16
DOIs
Publication statusPublished - Jan 1 2002

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Carbon Nanotubes
hexagons
Nanotubes
Carbon nanotubes
nanotubes
carbon nanotubes
azulene
rings
Growth temperature
assembling
metastable state
helices
Chemical vapor deposition
vapor deposition
Kinetics
kinetics
temperature

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Coiled carbon nanotube structures with supraunitary nonhexagonal to hexagonal ring ratio. / Bíró, L.; Márk, G.; Koós, Antal A.; B.Nagy, János; Lambin, Philippe.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 66, No. 16, 01.01.2002, p. 1-6.

Research output: Contribution to journalArticle

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