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Ion irradiation tolerance of graphene as studied by atomistic simulations

Autor(en)
E. H. Ahlgren, Jani Kotakoski, Ossi Lehtinen, A. Krasheninnikov
Abstrakt

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.

Organisation(en)
Physik Nanostrukturierter Materialien
Externe Organisation(en)
University of Helsinki
Journal
Applied Physics Letters
Band
100
Anzahl der Seiten
4
ISSN
0003-6951
Publikationsdatum
2012
Peer-reviewed
Ja
ÖFOS 2012
210006 Nanotechnologie
Link zum Portal
https://ucrisportal.univie.ac.at/de/publications/f0a88f8b-6b87-4284-a60c-e461b475326f