http://www.cnr.it/ontology/cnr/individuo/prodotto/ID295140

Bottom-up approach for the low-cost synthesis of graphene-alumina nanosheet interfaces using bimetallic alloys (Articolo in rivista)

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Bottom-up approach for the low-cost synthesis of graphene-alumina nanosheet interfaces using bimetallic alloys (Articolo in rivista) (literal)

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Luca Omiciuolo (1); Eduardo R. Hernández (2); Elisa Miniussi (1); Fabrizio Orlando (1); Paolo Lacovig (3); Silvano Lizzit (3); Tevfik Onur Mentes (3); Andrea Locatelli (3); Rosanna Larciprete (4); Marco Bianchi (5); Søren Ulstrup (5); Philip Hofmann (5); Dario Alfè (6,7,8) & Alessandro Baraldi (1,3,9) (2014)
Bottom-up approach for the low-cost synthesis of graphene-alumina nanosheet interfaces using bimetallic alloys
in Nature communications; Nature Publishing Group, London (Regno Unito)
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Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Luca Omiciuolo (1); Eduardo R. Hernández (2); Elisa Miniussi (1); Fabrizio Orlando (1); Paolo Lacovig (3); Silvano Lizzit (3); Tevfik Onur Mentes (3); Andrea Locatelli (3); Rosanna Larciprete (4); Marco Bianchi (5); Søren Ulstrup (5); Philip Hofmann (5); Dario Alfè (6,7,8) & Alessandro Baraldi (1,3,9) (literal)

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(1) Department of Physics, University of Trieste, Via Valerio 2, 34127 Trieste, Italy (2) Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC), Campus de Cantoblanco, 28049 Madrid, Spain (3) Elettra-Sincrotrone Trieste S.C.p.A., S.S. 14, Km 163.5, 34149 Trieste, Italy (4) CNR, Institute for Complex Systems, Via Fosso del Cavaliere 100, 00133 Roma, Italy (5) Department of Physics and Astronomy, Interdisciplinary Nanoscience Center, Aarhus University, 8000 Aarhus C, Denmark (6) Department of Earth Sciences, TYC@UCL, and London Centre for Nanotechnology, University College London, Gower Street, London WC1E 6BT, UK (7) Department of Physics and Astronomy, TYC@UCL, and London Centre for Nanotechnology, University College London, Gower Street, London WC1E 6BT, UK (8) IOM-CNR, DEMOCRITOS National Simulation Centre, I-34100 Trieste, Italy (9) IOM-CNR, Laboratorio TASC, S.S. 14 km 163.5, I-34149 Trieste, Italy (literal)

Titolo

Bottom-up approach for the low-cost synthesis of graphene-alumina nanosheet interfaces using bimetallic alloys (literal)

Abstract

The production of high-quality graphene-oxide interfaces is normally achieved by graphene growth via chemical vapour deposition on a metallic surface, followed by transfer of the C layer onto the oxide, by atomic layer and physical vapour deposition of the oxide on graphene or by carbon deposition on top of oxide surfaces. These methods, however, come with a series of issues: they are complex, costly and can easily result in damage to the carbon network, with detrimental effects on the carrier mobility. Here we show that the growth of a graphene layer on a bimetallic Ni3Al alloy and its subsequent exposure to oxygen at 520 K result in the formation of a 1.5 nm thick alumina nanosheet underneath graphene. This new, simple and low-cost strategy based on the use of alloys opens a promising route to the direct synthesis of a wide range of interfaces formed by graphene and high-k dielectrics. (literal)

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