Thickness effects of water overlayer on its explosive evaporation at heated metal surfaces

Yusheng Dou, Leonid V. Zhigilei, Zbigniew Postawa, Nicholas Winograd, Barbara J. Garrison

Research output: Contribution to journalConference article

39 Scopus citations

Abstract

Molecular dynamics (MD) simulations have been employed to investigate the effect of the thickness of a water overlayer on the character of its ejection from a heated Au surface. The simulations are performed for five systems differing in the thickness of the water overlayer which was adsorbed on a metal substrate heated to 1000 K. For each system, an explosive evaporation occurs in the part of the water film adjacent to the metal surface and the upper part of the film is pushed off by the generated force. The average maximum temperature of the water film decreases as the film thickness increases. In contrast, the temperature achieved by the fast cooling due to the explosive evaporation shows an inverse trend. The significance of these model calculations to matrix-assisted laser desorption and ionization (MALDI) mass spectrometry is discussed.

Original languageEnglish (US)
Pages (from-to)105-111
Number of pages7
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume180
Issue number1-4
DOIs
StatePublished - Jun 1 2001
EventComputer Simulation of Radiation Effects in Solids Section B: Beam Interactions with Materials and Atoms - State College, PA, United States
Duration: Jul 24 2000Jul 28 2000

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation

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