As impermeable to gas molecules and at the same time transparent to high-energy ions, graphene has been suggested as a window material for separating a high-vacuum ion beam system from targets kept at ambient conditions. However, accumulation of irradiation-induced damage in the graphene membrane may give rise to its mechanical failure. Using atomistic simulations, we demonstrate that irradiated graphene even with a high vacancy concentration does not show signs of such instability, indicating a considerable robustness of graphene windows. We further show that upper and lower estimates for the irradiation damage in graphene can be set using a simple model.
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Research Article| June 05 2012
Ion irradiation tolerance of graphene as studied by atomistic simulations
E. H. Åhlgren;
E. H. Åhlgren, J. Kotakoski, O. Lehtinen, A. V. Krasheninnikov; Ion irradiation tolerance of graphene as studied by atomistic simulations. Appl. Phys. Lett. 4 June 2012; 100 (23): 233108. https://doi.org/10.1063/1.4726053
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