AI Summary

Researchers from NIMS, the U.S. Geological Survey, and the University of Tokyo experimentally showed that friction can be completely independent of sliding speed by heating mica to 200 °C. The study found that at this temperature defects inside the mica crystals disappear, eliminating the usual velocity dependence. The results, published in Physical Review Letters, provide a new understanding of friction’s basic principles. This insight could guide the design of energy‑saving lubricants.

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