Cluster impacts in organics: microscopic models and universal sputtering curves

Delcorte, Arnaud;Restrepo, Oscar A.;Hamraoui, Karim;Czerwinski, Bartlomiej
(2014) Surface and Interface Analysis — Vol. 46, n° S1, p. 46-50 (2014)

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Authors
  • Delcorte, ArnaudUCLouvain
    Author
  • Restrepo, Oscar A.UCLouvain
    Author
  • Hamraoui, Karim
    Author
  • Czerwinski, BartlomiejUCLouvain
    Author
Abstract
This article reviews the results of molecular dynamics simulations of kilo-electron-volt projectile (Ga, Au 1-400, Bi 1-5,C60,Ar60-2000 and organic clusters) impacts with two model hydrocarbon targets, an amorphous solid made of kilodalton molecules and a crystal of polyethylene with infinite chain length. The universal dependences of the sputtered mass on the projectile energy, when scaled by the projectile mass, with their characteristic transition around 1eV/amu (or ~14km/s), are analyzed and explained by the physics of the interaction. We also comment on comparisons with recent experimental sputtering data.
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Delcorte, A., Restrepo, O. A., Hamraoui, K., & Czerwinski, B. (2014). Cluster impacts in organics: microscopic models and universal sputtering curves. Surface and Interface Analysis, 46(S1), 46-50. https://doi.org/10.1002/sia.5544 (Original work published 2014)