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This study establishes a rigorous thermodynamic criterion for 2D superlubricity in graphene-based systems, moving beyond the simplistic assumption that atomic lattice mismatch alone guarantees frictionless sliding. By defining phases through zero-temperature limits and depinning torques, researchers provide a quantitative framework to predict when layered materials will transition between pinned and fully sliding states without resistance. These findings refine our fundamental understanding of nanoscale mechanics in moiré systems, which is critical for advancing quantum material applications and ultra-low-friction devices.
Quantum Li Wang & Ye define 2D superlubricity criterion using graphene.

Li Wang & Yunjie Ye establish a thermodynamic criterion for 2D superlubricity, defining phases via a zero-temperature limit—incommensurability isn’t enough.
Researchers have developed a quantitative framework for determining when two-dimensional materials can achieve structural superlubricity, offering new insight into how friction can be minimized at the nanoscale. In a new study, Li Wang of Nanjing University and Yunjie Ye of…
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