Lattice mismatch induced ripples and wrinkles in planar graphene/boron nitride superlattices

  title={Lattice mismatch induced ripples and wrinkles in planar graphene/boron nitride superlattices},
  author={Dinkar Nandwana and Elif Ertekin},
  journal={Journal of Applied Physics},
A continuum theory to describe periodic ripple formation in planar graphene/boron nitride superlattices is formulated. Due to the lattice mismatch between the two materials, it is shown that flat superlattices are unstable with respect to ripple formation of appropriate wavelengths. A competition between bending energy and transverse stretching energy gives rise to an optimal ripple wavelength that depends on the superlattice pitch. The optimal wavelengths predicted by the continuum theory are… Expand

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