STM and AFM investigation of coiled carbon nanotubes produced by laser evaporation of fullerence

A. A. Koós, R. Ehlich, Z. E. Horváth, Z. Osváth, J. Gyulai, J. B. Nagy, L. P. Biró

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Carbon nanotubes were grown by the evaporation of a fullerene/Ni particle mixture in vacuum, using 532 nm laser pulses of 12-28 μJ from a Nd YAG laser. The evaporated material was deposited on a freshly cleaved graphite (HOPG) surface and the samples were investigated by scanning tunneling microscopy (STM) and AFM. In the present work, we focus on the Y-branched and coiled carbon nanotubes, the formation of which supposes the incorporation of non-hexagonal rings in the hexagonal graphitic network. The regularity of the observed coils is an indication that the incorporation of the pentagons and heptagons occurred in a very regular way. The possible atomic structure of the coiled carbon nanotubes is discussed.

Original languageEnglish
Pages (from-to)275-278
Number of pages4
JournalMaterials Science and Engineering C
Volume23
Issue number1-2
DOIs
Publication statusPublished - Jan 15 2003

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Keywords

  • Carbon nanotubes
  • Coiled carbon nanotubes
  • Haeckelite
  • Y-branches

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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