Strain‐Driven Superlubricity of Graphene/Graphene in Commensurate Contact

The occurrence of structural superlubricity (SSL) requires that two sliding surfaces be in incommensurate contact. However, the contact between is fundamentally an instable state whose maintenance over time extremely laborious. To circumvent this difficulty, it proposed present work to change paradigm making appear and keeping time. Two graphene layers commensurate contact, which are subjected isotropic in-plane synchronous strain, considered studied. First, by DFT calculations, demonstrated strain-driven (SSDSL) takes place for some particular paths or all paths, once compressive strain prescribed reaches 15% 35%. Next, Prandtl-Tomlinson (P-T) model used explain how modulate stick-slip, continuous frictionless slides strain. Finally, SSDSL justified detail interfacial charge density transfer due results obtained open a new perspective realizing robust way.