Migration of a carbon adatom on a charged single-walled carbon nanotube

Longtao Han, Predrag Krstic, Igor Kaganovich, Roberto Car

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

We find that negative charges on an armchair single-walled carbon nanotube (SWCNT) can significantly enhance the migration of a carbon adatom on the external surfaces of SWCNTs, along the direction of the tube axis. Nanotube charging results in stronger binding of adatoms to SWCNTs and consequent longer lifetimes of adatoms before desorption, which in turn increases their migration distance several orders of magnitude. These results support the hypothesis of diffusion enhanced SWCNT growth in the volume of arc plasma. This process could enhance effective carbon flux to the metal catalyst.

Original languageEnglish (US)
Pages (from-to)174-180
Number of pages7
JournalCarbon
Volume116
DOIs
StatePublished - May 1 2017

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)

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