Universität zu Köln

Herbig, Charlotte and Michely, Thomas (2016). Graphene: the ultimately thin sputtering shield. 2D Mater., 3 (2). BRISTOL: IOP PUBLISHING LTD. ISSN 2053-1583

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Abstract

Scanning tunneling microscopy methods are applied to investigate the potential of monolayer graphene as a sputtering shield for the underlying metal substrate. To visualize the effect, a bare and a graphene protected Ir(111) surface are irradiated with 500 eV Xe+, as well as 200 eV Xe+ and Ar+ ions, all at 1000 K. By quantitatively evaluating the sputtered material from the surface vacancy island area, we find a drastic decrease in metal sputtering for the graphene protected surface. It is demonstrated that efficient sputter protection relies on self-repair of the ion damage in graphene, which takes place efficiently in the temperature range of chemical vapor deposition growth. Based on the generality of the underlying principles of ion damage, graphene self-repair, and graphene growth, we speculate that efficient sputter protection is possible for a broad range of metals and alloys.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Herbig, Charlotte UNSPECIFIED UNSPECIFIED UNSPECIFIED Michely, Thomas UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-273220
DOI:	10.1088/2053-1583/3/2/025032
Journal or Publication Title:	2D Mater.
Volume:	3
Number:	2
Date:	2016
Publisher:	IOP PUBLISHING LTD
Place of Publication:	BRISTOL
ISSN:	2053-1583
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ACCURATE SEMIEMPIRICAL EQUATION; CARBON NANOPLATELET FORMATION; ION-BOMBARDMENT; LAYER GRAPHENE; LARGE-AREA; YIELDS; IRRADIATION; GRAPHITE; IMPACTS; DAMAGE Multiple languages Materials Science, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/27322