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.

Németh, P., Mccoll, K., Smith, R., Murri, M., Garvie, L., Alvaro, M., et al. (2020). Diamond-graphene composite nanostructures. NANO LETTERS, 20(5), 3611-3619 [10.1021/acs.nanolett.0c00556].

Diamond-graphene composite nanostructures

Murri, Mara;
2020

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.
Articolo in rivista - Articolo scientifico
Graphene-diamond nanocomposite high-resolution TEM density functional theory calculations sp2- and sp3-bonded nanomaterials mechanical properties
English
2020
20
5
3611
3619
none
Németh, P., Mccoll, K., Smith, R., Murri, M., Garvie, L., Alvaro, M., et al. (2020). Diamond-graphene composite nanostructures. NANO LETTERS, 20(5), 3611-3619 [10.1021/acs.nanolett.0c00556].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/272764
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