Molecular dynamics simulations of sputtering of organic overlayers by slow, large clusters

L. Rzeznik, B. Czerwinski, B. J. Garrison, N. Winograd, Z. Postawa

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Abstract

The ion-stimulated desorption of organic molecules by impact of large and slow clusters is examined using molecular dynamics (MDs) computer simulations. The investigated system, represented by a monolayer of benzene deposited on Ag{1 1 1}, is irradiated with projectiles composed of thousands of noble gas atoms having a kinetic energy of 0.1-20 eV/atom. The sputtering yield of molecular species and the kinetic energy distributions are analyzed and compared to the results obtain for PS4 overlayer. The simulations demonstrate quite clearly that the physics of ejection by large and slow clusters is distinct from the ejection events stimulated by the popular SIMS clusters, like C 60 , Au 3 and SF 5 at tens of keV energies.

Original languageEnglish (US)
Pages (from-to)841-843
Number of pages3
JournalApplied Surface Science
Volume255
Issue number4
DOIs
Publication statusPublished - Dec 15 2008

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All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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