http://www.cnr.it/ontology/cnr/individuo/prodotto/ID250619

Fine tuning of graphene-metal adhesion by surface alloying (Articolo in rivista)

Type

Label

Fine tuning of graphene-metal adhesion by surface alloying (Articolo in rivista) (literal)

Anno

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

Alternative label

D. Alfè (1,2); M. Pozzo (1); E. Miniussi (3,4); S. Günther (5); P. Lacovig (6); S. Lizzit (6); R. Larciprete (7); B. Santos Burgos (6); T. O. Mentes (6); A. Locatelli (6); A. Baraldi (3,4) (2013)
Fine tuning of graphene-metal adhesion by surface alloying
in Scientific reports (Nature Publishing Group); Nature Publishing Group, New York (Stati Uniti d'America)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

D. Alfè (1,2); M. Pozzo (1); E. Miniussi (3,4); S. Günther (5); P. Lacovig (6); S. Lizzit (6); R. Larciprete (7); B. Santos Burgos (6); T. O. Mentes (6); A. Locatelli (6); A. Baraldi (3,4) (literal)

Pagina inizio

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Rivista

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Note

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(1) Department of Earth Sciences, Department of Physics and Astronomy, TYC@UCL, and London Centre for Nanotechnology, University College London, Gower Street, London WC1E 6BT, United Kingdom (2) IOM-CNR, DEMOCRITOS National Simulation Centre, I-34100 Trieste, Italy (3) Physics Department and CENMAT, University of Trieste, Via Valerio 2, I-34127 Trieste, ITALY (4) IOM-CNR, Laboratorio TASC, S.S. 14 Km 163.5, I-34149 Trieste, ITALY (5) Technische Universität München, Chemie Department, Physikalische Chemie mit Schwerpunkt Katalyse, Lichtenbergstr. 4, D-85748 Garching, Germany (6) Elettra - Sincrotrone Trieste S.C.p.A., S.S. 14 Km 163.5, 34149 Trieste, ITALY (7) CNR-Institute for Complex Systems, via Fosso del Cavaliere 100, I-00133 Roma, Italy (literal)

Titolo

Abstract

We show that bimetallic surface alloying provides a viable route for governing the interaction between graphene and metal through the selective choice of the elemental composition of the surface alloy. This concept is illustrated by an experimental and theoretical characterization of the properties of graphene on a model PtRu surface alloy on Ru(0001), with a concentration of Pt atoms in the first layer between 0 and 50%. The progressive increase of the Pt content determines the gradual detachment of graphene from the substrate, which results from the modification of the carbon orbital hybridization promoted by Pt. Alloying is also found to affect the morphology of graphene, which is strongly corrugated on bare Ru, but becomes flat at a Pt coverage of 50%. The method here proposed can be readily extended to several supports, thus opening the way to the conformal growth of graphene on metals and to a full tunability of the graphene-substrate interaction. (literal)

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