Platinum nanocluster growth on vertically aligned carbon nanofiber arrays: Sputtering experiments and molecular dynamics simulations

Pascal Brault, Amaël Caillard, Christine Charles, Rod W. Boswell, David B. Graves

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Sputtered platinum nanocluster growth on previously plasma enhanced chemical vapor deposition - PECVD - grown vertically aligned carbon nanofiber arrays is presented. Experimental cluster size distribution is shown to decrease from the CNF top to bottom, as observed by transmission electron microscopy. Molecular dynamics simulations are carried out for understanding early stages of Pt growth on model CNF arrays. Especially, sticking coefficients, concentration profiles along CNF wall, cluster size distributions are calculated. Simulated cluster size distribution are consistent with experimental finding. Sticking coefficient decreases against deposition time. The shape of the sticking curve reflects the nanocluster growth process.

Original languageEnglish (US)
Pages (from-to)352-356
Number of pages5
JournalApplied Surface Science
Volume263
DOIs
StatePublished - Dec 15 2012
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • Condensed Matter Physics
  • General Physics and Astronomy
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

Keywords

  • Carbon nanofibers
  • Molecular dynamics simulation
  • Nanocluster growth
  • PECVD
  • Sputtering deposition
  • Sticking coefficient

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