Growth model for arc-deposited fullerene-like CNx nanoparticles

Bernadett Veisz, György Radnóczi

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Multiwall CNx nanotubes, nanoonions, and amorphous nanoballs were formed by carbon DC arc evaporation in a nitrogen atmosphere. The samples were investigated by conventional and high-resolution transmission electron microscopy. We propose a fragment-by-fragment growth mechanism for the formation of the nanoparticles. Accordingly, particles and aggregates of particles form in the vacuum ambient by the collisions between atomic species and small fragments. This growth model is supported by the discontinuous inner shells and disordered surface layers composed from graphene fragments. Image simulations confirm the detectability of dangling and back-folding surface layers in the experimental images. Further, the simulated images also confirm that the growth of nanoonions starts from a single fullerene-like seed. The amorphous nanoballs form when ordering of the building blocks during growth is hindered by the cross-linking nitrogen bonds.

Original languageEnglish
Pages (from-to)100-105
Number of pages6
JournalMicroscopy Research and Technique
Volume67
Issue number2
DOIs
Publication statusPublished - Jun 1 2005

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Keywords

  • CN fragments
  • Image simulation
  • Nanoonion
  • Nanotube
  • Transmission electron microscopy

ASJC Scopus subject areas

  • Anatomy
  • Histology
  • Instrumentation
  • Medical Laboratory Technology

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