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  4. Contact mechanics of graphene-covered metal surfaces
 
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2018
Journal Article
Title

Contact mechanics of graphene-covered metal surfaces

Abstract
We carry out molecular statics simulations of the indentation of bare and graphene-covered Pt (111) surfaces with smooth and rough indenters of radius 1.5 to 10 nm. Our simulations show that the plastic yield of bare surfaces strongly depends on atomic-scale indenter roughness such as terraces or amorphous disorder. Covering surfaces with graphene regularizes this response to the results obtained for ideally smooth indenters. Our results suggest that graphene monolayers and other 2D materials mitigate the effect of roughness, which could be exploited to improve the fidelity of experiments that probe the mechanical properties of interfaces.
Author(s)
Klemenz, A.
Fraunhofer-Institut für Werkstoffmechanik IWM  
Gola, A.
Karlsruhe Institute of Technology KIT, Karlsruhe
Moseler, M.
Fraunhofer-Institut für Werkstoffmechanik IWM  
Pastewka, L.
Fraunhofer-Institut für Werkstoffmechanik IWM  
Journal
Applied Physics Letters  
Project(s)
TIGeR
Funder
Bundesministerium für Bildung und Forschung BMBF (Deutschland)  
Deutsche Forschungsgemeinschaft DFG  
DOI
10.1063/1.5006770
Language
English
Fraunhofer-Institut für Werkstoffmechanik IWM  
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