On the mechanical stability of graphene in situ grown on Cu(111) : Buckling and sliding

Résumé fourni par la source

Graphene monolayers were grown on copper crystals and then mechanically deformed using an original experimental equipment allowing to investigate in situ at the atomic scale by scanning tunnelling microscopy the evolution of coated specimens under increasing strains. The mechanical response of graphene monolayers under successive uniaxial mechanical compression is presented. In particular, the evolution of the as-grown buckles under strain is described and discussed within the framework of elastic modelling and the sliding of the graphene monolayer on its substrate is quantified.

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