Diamond-graphene composite nanostructures

Péter Németh, Kit Mccoll, Rachael L. Smith, Mara Murri, Laurence A.J. Garvie, Matteo Alvaro, Béla Pécz, Adrian P. Jones, Furio Corà, Christoph G. Salzmann, Paul F. Mcmillan

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The search for new nanostructural topologies composed of elemental carbon is driven by technological opportunities as well as the need to understand the structure and evolution of carbon materials formed by planetary shock impact events and in laboratory syntheses. We describe two new families of diamond-graphene (diaphite) phases constructed from layered and bonded sp3 and sp2 nanostructural units and provide a framework for classifying the members of this new class of materials. The nanocomposite structures are identified within both natural impact diamonds and laboratory-shocked samples and possess diffraction features that have previously been assigned to lonsdaleite and postgraphite phases. The diaphite nanocomposites represent a new class of high-performance carbon materials that are predicted to combine the superhard qualities of diamond with high fracture toughness and ductility enabled by the graphitic units and the atomically defined interfaces between the sp3- and sp2-bonded nanodomains.

Original languageEnglish
Pages (from-to)3611-3619
Number of pages9
JournalNano letters
Volume20
Issue number5
DOIs
Publication statusPublished - May 13 2020

Keywords

  • Density functional theory calculations
  • Graphene-diamond nanocomposite
  • High-resolution tem
  • Mechanical properties
  • Sp- and sp-bonded nanomaterials

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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  • Cite this

    Németh, P., Mccoll, K., Smith, R. L., Murri, M., Garvie, L. A. J., Alvaro, M., Pécz, B., Jones, A. P., Corà, F., Salzmann, C. G., & Mcmillan, P. F. (2020). Diamond-graphene composite nanostructures. Nano letters, 20(5), 3611-3619. https://doi.org/10.1021/acs.nanolett.0c00556