Strain-Driven Faceting of Graphene-Catalyst Interfaces - Université Grenoble Alpes
Article Dans Une Revue Nano Letters Année : 2023

Strain-Driven Faceting of Graphene-Catalyst Interfaces

Mitisha Surana
Ganesh Ananthakrishnan
Matthew Poss
  • Fonction : Auteur
Jad Jean Yaacoub
  • Fonction : Auteur
Kaihao Zhang
Tusher Ahmed
  • Fonction : Auteur
Nikhil Chandra Admal
  • Fonction : Auteur
Pascal Pochet
Harley Johnson
  • Fonction : Auteur
Sameh Tawfick

Résumé

The interfacial interaction of 2D materials with the substrate leads to striking surface faceting affecting its electronic properties. Here, we quantitatively study the orientation-dependent facet topographies observed on the catalyst under graphene using electron backscatter diffraction and atomic force microscopy. The original flat catalyst surface transforms into two facets: a low-energy low-index surface, e.g. (111), and a vicinal (high-index) surface. The critical role of graphene strain, besides anisotropic interfacial energy, in forming the observed topographies is revealed by molecular simulations. These insights are applicable to other 2D/3D heterostructures.
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Dates et versions

hal-04596792 , version 1 (31-05-2024)

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Citer

Mitisha Surana, Ganesh Ananthakrishnan, Matthew Poss, Jad Jean Yaacoub, Kaihao Zhang, et al.. Strain-Driven Faceting of Graphene-Catalyst Interfaces. Nano Letters, 2023, 23 (5), pp.1659-1665. ⟨10.1021/acs.nanolett.2c03911⟩. ⟨hal-04596792⟩
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