한국진공학회:학술대회논문집 (Proceedings of the Korean Vacuum Society Conference)
- 한국진공학회 2009년도 제38회 동계학술대회 초록집
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- Pages.358-358
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- 2010
MD simulation of structural change of polyethylene induced by high energy ion bombardment
- Kim, Chan-Soo (Computational Science Center, Korea Institute of Science and Technology (KIST)) ;
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Ahmed, Sk. Faruque
(Future Convergence Laboratory, Korea Institute of Science and Technology (KIST)) ;
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Moon, Myoung-Woon
(Future Convergence Laboratory, Korea Institute of Science and Technology (KIST)) ;
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Lee, Kwang-Ryeol
(Computational Science Center, Korea Institute of Science and Technology (KIST))
- 발행 : 2010.02.17
초록
Ion beam bombardment at low energy forms nanosize patterns such as ripples, dots or wrinkles on the surface of polymers in ambient temperature and pressure. It has been known that the ion beam can alter the polymer surface that induces skins stiffer or the density higher by higher compressive stress or strain energies associated with chain scissions and crosslinks of the polymer. Atomic scale structure evolution in polymers is essential to understand a stress generation mechanism during the ion beam bombardment, which governs the nanoscale surface structure evolution. In this work, Molecular Dynamics (MD) simulations are employed to characterize the phenomenon occurred in bombardment between the ion beam and polymers that forms nanosize patterns. We investigate the structure evolution of Low Density Polyethylene (LDPE) at 300 K as the polymer is bombarded with Argon ions having various kinetic energies ranging from 100 eV to 1 KeV with 50 eV intervals having the fluence of
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