TY - JOUR
T1 - Modification of poly(methyl methacrylate) by keV Ar deposition
AU - Su, Ya Ting
AU - Shan, Tzu Ray
AU - Sinnott, Susan B.
N1 - Funding Information:
The authors acknowledge the support of the National Science Foundation through grants CHE-0200838 and CHE-0809376.
PY - 2009/8/1
Y1 - 2009/8/1
N2 - Classical molecular dynamics simulations are used to examine 1 keV Ar atom bombardment on the surface of poly(methyl methacrylate) (PMMA), which induces sputtering and chemical modifications to the surface. The simulations are carried out at various surface temperatures that range from 200 to 600 K. The results indicate that different fragments of PMMA, as characterized by their mass, are preferentially sputtered from the surface at the various temperatures considered. In addition, the simulations predict that small fragments are produced by the high energy deposition process. However, larger sized fragments are generated when the surface temperature is close to the glass transition temperature of PMMA. The atomic-scale processes by which these occur are elucidated by the simulations.
AB - Classical molecular dynamics simulations are used to examine 1 keV Ar atom bombardment on the surface of poly(methyl methacrylate) (PMMA), which induces sputtering and chemical modifications to the surface. The simulations are carried out at various surface temperatures that range from 200 to 600 K. The results indicate that different fragments of PMMA, as characterized by their mass, are preferentially sputtered from the surface at the various temperatures considered. In addition, the simulations predict that small fragments are produced by the high energy deposition process. However, larger sized fragments are generated when the surface temperature is close to the glass transition temperature of PMMA. The atomic-scale processes by which these occur are elucidated by the simulations.
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U2 - 10.1016/j.nimb.2009.06.008
DO - 10.1016/j.nimb.2009.06.008
M3 - Article
AN - SCOPUS:67649910073
SN - 0168-583X
VL - 267
SP - 2525
EP - 2531
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 - 15
ER -