Mechanical and structural properties and devices articles within Nature Physics

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  • Article |

    The mechanism by which two-dimensional materials remain stable at a finite temperature is still under debate. Now, numerical calculations suggest that rotational symmetry is crucial in suppressing anharmonic effects that lead to structural instability.

    • Unai Aseginolaza
    • , Josu Diego
    •  & Ion Errea

  • Letter |

    Defects are often introduced to increase the stiffness of three-dimensional materials. Evidence now suggests that the elastic modulus of two-dimensional graphene sheets can also be increased by controlled defect creation.

    • Guillermo López-Polín
    • , Cristina Gómez-Navarro
    •  & Julio Gómez-Herrero

  • Article |

    A single layer of graphene on top of a hexagonal boron-nitride sheet can stretch to form a commensurate structure, or not — depending on the rotation angle between the two layers. In the case of commensurability, strain gets concentrated in domain walls, resulting in soliton-like structures.

    • C. R. Woods
    • , L. Britnell
    •  & K. S. Novoselov

  • Letter |

    It is known that graphene exhibits natural ripples with characteristic lengths of around 10 nm. But when it is stretched across nanometre-scale trenches that form in a reconstructed copper surface, it develops even tighter corrugations that cannot be explained by continuum theory.

    • Levente Tapasztó
    • , Traian Dumitrică
    •  & László P. Biró

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