[1P02] Theoretical description of nanomechanics of the contact state of twisted graphene interface
Twisted graphene is one of the superlubric interface that can reduce friction to the order of magnitude of less than several hundreds of pN and can be formed by rotating a graphene sheet stacked on a graphite substrate. In this work, the mechanical behavior of the contact state of a twisted graphene interface is studied by a molecular simulation of the sliding process of the graphene sheet. Furthermore, the mechanics of the contact state in a general twisted crystal lattices of layered material is mathematically discussed. According to this discussion, any lateral position can be written by the formula as a function of the rotation angle, the translational movement vector, and the crystal lattice deviations. By applying this formula to the twisted graphene, the contact state behavior observed in the simulation is theoretically explained.
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