Rippling of two-dimensional materials by line defects
Kähärä, T., & Koskinen, P. (2020). Rippling of two-dimensional materials by line defects. Physical Review B, 102(7), Article 075433. https://doi.org/10.1103/PhysRevB.102.075433
Published inPhysical Review B
© 2020 American Physical Society
Two-dimensional materials and their mechanical properties are known to be profoundly affected by rippling deformations. However, although ripples are fairly well understood, less is known about their origin and controlled modification. Here, motivated by recent reports of laser-controlled creation of line defects in graphene, we investigate how line defects could be used to control rippling in graphene and other two-dimensional materials. By sequential multiscale coupling of density-functional tight-binding and continuum elasticity simulations, we quantify the amount of rippling when the number and the cumulative length of the line defects increase. Simulations show that elastic sheets with networks of line defects create rippling that induces considerable out-of-plane rigidification and in-plane softening with nonlinear elastic behavior. We hope that these insights help to guide experimental attempts to modify the mechanical properties of graphene and other two-dimensional materials. ...
PublisherAmerican Physical Society (APS)
Publication in research information system
MetadataShow full item record
Related funder(s)Academy of Finland
Funding program(s)Academy Project, AoF
Additional information about fundingWe acknowledge the Academy of Finland for funding (Project No. 297115).
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