TY - JOUR
T1 - Molecular dynamic simulations of the sputtering of multilayer organic systems
AU - Postawa, Z.
AU - Ludwig, K.
AU - Piaskowy, J.
AU - Krantzman, K.
AU - Winograd, N.
AU - Garrison, B. J.
N1 - Funding Information:
The financial support from the National Institutes of Health, the National Science Foundation and the Office of Naval Research, as well as the Polish Committee for Scientific Research, Cooperation Programme between Flanders and Poland, and CYFRONET are gratefully acknowledged.
PY - 2003/4
Y1 - 2003/4
N2 - Sputtering of organic overlayers has been modeled using molecular dynamics computer simulations. The investigated systems are composed of benzene molecules condensed into one, two and three layers on an Ag{111} surface. The formed organic overlayers were bombarded with 4 keV Ar projectiles at normal incidence. The development of the collision cascade in the organic overlayer was investigated. The sputtering yield, mass, internal and kinetic energy distributions of ejected particles have been analyzed as a function of the thickness of the organic layer. The results show that all emission characteristics are sensitive to the variation of layer thickness. Although most of the ejected intact benzene molecules originate from the topmost layer, the emission of particles located initially in second and third layers is significant. The analysis indicates that the metallic substrate plays a dominant role in the ejection of intact organic molecules.
AB - Sputtering of organic overlayers has been modeled using molecular dynamics computer simulations. The investigated systems are composed of benzene molecules condensed into one, two and three layers on an Ag{111} surface. The formed organic overlayers were bombarded with 4 keV Ar projectiles at normal incidence. The development of the collision cascade in the organic overlayer was investigated. The sputtering yield, mass, internal and kinetic energy distributions of ejected particles have been analyzed as a function of the thickness of the organic layer. The results show that all emission characteristics are sensitive to the variation of layer thickness. Although most of the ejected intact benzene molecules originate from the topmost layer, the emission of particles located initially in second and third layers is significant. The analysis indicates that the metallic substrate plays a dominant role in the ejection of intact organic molecules.
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U2 - 10.1016/S0168-583X(02)01856-6
DO - 10.1016/S0168-583X(02)01856-6
M3 - Conference article
AN - SCOPUS:0037377369
SN - 0168-583X
VL - 202
SP - 168
EP - 174
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
T2 - 6th International Conference on Computer Simulation of Radiation
Y2 - 23 June 2002 through 27 June 2002
ER -