Ultrahard carbon film from epitaxial two-layer graphene

  title={Ultrahard carbon film from epitaxial two-layer graphene},
  author={Yang Gao and Tengfei Cao and Filippo Cellini and Claire Berger and Walt A. de Heer and Erio Tosatti and Elisa Riedo and Angelo Bongiorno},
  journal={Nature Nanotechnology},
Atomically thin graphene exhibits fascinating mechanical properties, although its hardness and transverse stiffness are inferior to those of diamond. So far, there has been no practical demonstration of the transformation of multilayer graphene into diamond-like ultrahard structures. Here we show that at room temperature and after nano-indentation, two-layer graphene on SiC(0001) exhibits a transverse stiffness and hardness comparable to diamond, is resistant to perforation with a diamond… 

Epitaxial two-layer graphene under pressure: Diamene stiffer than Diamond

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Large bandgap of pressurized trilayer graphene

  • F. KeYabin Chen Bin Chen
  • Physics, Materials Science
    Proceedings of the National Academy of Sciences
  • 2019
A microwiring technique for high-pressure electrical measurement on nanomaterials with only a few layers is developed and it is demonstrated that an intrinsic bandgap of 2.5 eV is achievable in compressed Bernal-stacked trilayer graphene.



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Room-temperature metastability of multilayer graphene oxide films.

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