Interlayer Friction and Adhesion Effects in Penta-PdSe₂-Based van der Waals Heterostructures.

ABSTRACT: Due to their inherent lattice mismatch characteristics, 2D heterostructure interfaces are considered ideal for achieving stable and sustained ultralow friction (superlubricity). Despite extensive research, the current understanding of how interface adhesion affects interlayer friction remains limited. This study focused on graphene/MoS₂ and graphene/PdSe₂ heterostructure interfaces, where extremely low friction coefficients of ≈10^-3 are observed. In contrast, the MoS₂/PdSe₂ heterostructure interfaces exhibit higher friction coefficients, ≈0.02, primarily due to significant interfacial interactions driven by interlayer charge transfer, which is closely related to the ionic nature of 2D material crystals. These findings indicate that the

SUBMITTER: Ru G 

PROVIDER: S-EPMC11425967 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature