期刊
NANO LETTERS
卷 20, 期 5, 页码 3611-3619出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.0c00556
关键词
Graphene-diamond nanocomposite; high-resolution TEM; density functional theory calculations; sp(2)-and sp(3)-bonded nanomaterials; mechanical properties
类别
资金
- Hungarian National Research, Development and Innovation Office project [NKFIH_KH126502]
- Janos Bolyai Research Scholarship
- New National Excellence Program of the Ministry for Innovation and Technology [UNKP-19-4-PE-4]
- NASA Emerging Worlds grant [NNX17AE56G]
- UCL Chemistry Department
- European Research Council under the European Union's Horizon 2020 research and innovation program [725271]
- EPSRC [EP/L000202, EP/P020194/1]
- IMPACt [R164WEJAHH]
- TRUE DEPTHS (ERC grant) [714936]
- Barringer Family Fund for Meteorite Impact Research
- EU Horizon 2020 research and innovation program as Europlanet 2020 RI [654208]
- [VEKOP-2.3.3-15-2016-00002]
- EPSRC [EP/P020194/1] Funding Source: UKRI
- NASA [1002378, NNX17AE56G] Funding Source: Federal RePORTER
- European Research Council (ERC) [725271] Funding Source: European Research Council (ERC)
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 sp(3) and sp(2) 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 sp(3)- and sp(2)-bonded nanodomains.
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