title: Bending Rules in Graphene Kirigami.
abstract: The three-dimensional shapes of graphene sheets produced by nanoscale cut-and-join kirigami are studied by combining large-scale atomistic simulations with continuum elastic modeling. Lattice segments are selectively removed from a graphene sheet, and the structure is allowed to close by relaxing in the third dimension. The surface relaxation is limited by a nonzero bending modulus which produces a smoothly modulated landscape instead of the ridge-and-plateau motif found in macroscopic lattice kirigami. The resulting surface shapes and their interactions are well described by a new set of microscopic kirigami rules that resolve the competition between bending and stretching energies.
authors.affiliation: Institute of Theoretical Physics Ecole Polytechnique Federale de Lausanne (EPFL), Lausanne CH-1015, Switzerland.|Department of Physics Loughborough University, Loughborough LE11 3TU, United Kingdom.
authors.forename: Bastien F
authors.initials: BF
authors.lastname: Grosso
authors.affiliation: Department of Physics and Astronomy University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.|Department of Physics Loughborough University, Loughborough LE11 3TU, United Kingdom.
authors.forename: E J
authors.initials: EJ
authors.lastname: Mele