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Direct nanoscale imaging of ballistic and diffusive thermal transport in graphene nanostructures.
Pumarol, Manuel E; Rosamond, Mark C; Tovee, Peter; Petty, Michael C; Zeze, Dagou A; Falko, Vladimir; Kolosov, Oleg V.
Afiliación
  • Pumarol ME; Physics Department, Lancaster University, Lancaster, LA1 4YB, United Kingdom.
Nano Lett ; 12(6): 2906-11, 2012 Jun 13.
Article en En | MEDLINE | ID: mdl-22524441
We report direct imaging of nanoscale thermal transport in single and few-layer graphene with approximately 50 nm lateral resolution using high vacuum scanning thermal microscopy. We observed increased heat transport in suspended graphene where heat is conducted by ballistic phonons, compared to adjacent areas of supported graphene, and observed decreasing thermal conductance of supported graphene with increased layer number. Our nanothermal images suggest a mean-free-path of thermal phonons in supported graphene below 100 nm.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Nanoestructuras / Grafito Idioma: En Revista: Nano Lett Año: 2012 Tipo del documento: Article País de afiliación: Reino Unido Pais de publicación: Estados Unidos
Texto completo
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PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Nanoestructuras / Grafito Idioma: En Revista: Nano Lett Año: 2012 Tipo del documento: Article País de afiliación: Reino Unido Pais de publicación: Estados Unidos