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Schematic representation of structural superlubricity. (a) Commensurability, where matching rotational symmetry and orientation prevent sliding. (b) Incommensurability (angular rotation): disrupts the symmetry, enabling sliding. (c) Incommensurability (lattice spacing mismatch): the layers have a mismatch in the lattice spacing, allowing for sliding due to the absence of interlocking [29]. Copyright © 2023 Springer Nature.
