TY - JOUR
T1 - Thickness effects of water overlayer on its explosive evaporation at heated metal surfaces
AU - Dou, Yusheng
AU - Zhigilei, Leonid V.
AU - Postawa, Zbigniew
AU - Winograd, Nicholas
AU - Garrison, Barbara J.
N1 - Funding Information:
The financial support of the National Science Foundation, the National Institute of Health, the Office of Naval Research and the IBM Selected University Research Program are gratefully acknowledged. The Center for Academic Computing at Penn State University provided computational support. ZP would like to acknowledge support from Polish Committee of Scientific Research and NATO CLG grant.
PY - 2001/6
Y1 - 2001/6
N2 - 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.
AB - 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.
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U2 - 10.1016/S0168-583X(01)00403-7
DO - 10.1016/S0168-583X(01)00403-7
M3 - Conference article
AN - SCOPUS:0035365160
SN - 0168-583X
VL - 180
SP - 105
EP - 111
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
IS - 1-4
T2 - Computer Simulation of Radiation Effects in Solids Section B: Beam Interactions with Materials and Atoms
Y2 - 24 July 2000 through 28 July 2000
ER -