Ion irradiation tolerance of graphene as studied by atomistic simulations

Journal Article · Mon Jun 04 00:00:00 EDT 2012 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4726053· OSTI ID:22025589

Ahlgren, E H; Lehtinen, O ^[1]; Kotakoski, J ^[1]; Krasheninnikov, A V ^[1]

---

1. Department of Physics, University of Helsinki, P.O. Box 43, 00014 Helsinki (Finland)

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.

• OSTI ID: 22025589
• Journal Information: Applied Physics Letters, Vol. 100, Issue 23; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
BUILDUP
COMPUTERIZED SIMULATION
CRYSTALS
GRAPHITE
ION BEAMS
IRRADIATION
MEMBRANES
MOLECULES
NANOSTRUCTURES
PERMEABILITY
PHYSICAL RADIATION EFFECTS
TOLERANCE
VACANCIES