Real-time imaging of adatom-promoted graphene growth on nickel.
Science
; 359(6381): 1243-1246, 2018 03 16.
Article
em En
| MEDLINE
| ID: mdl-29590072
ABSTRACT
Single adatoms are expected to participate in many processes occurring at solid surfaces, such as the growth of graphene on metals. We demonstrate, both experimentally and theoretically, the catalytic role played by single metal adatoms during the technologically relevant process of graphene growth on nickel (Ni). The catalytic action of individual Ni atoms at the edges of a growing graphene flake was directly captured by scanning tunneling microscopy imaging at the millisecond time scale, while force field molecular dynamics and density functional theory calculations rationalize the experimental observations. Our results unveil the mechanism governing the activity of a single-atom catalyst at work.
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Base de dados:
MEDLINE
Idioma:
En
Revista:
Science
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
Itália