Humidity may be the key to super-lubricity 'switch'
https://phys.org/news/2023-01-humidity-key-super-lubricity.html
"silicon oxide probe on a graphite basal plane... super-low friction increased 25X by water vapor and 45X by phenol vapor... water (from humidity) adsorbed on silica surface forms nanostructure similar to ice rearranging structure so that ice and graphite lattices match causing friction to go up... controlling material's surface humidity adjusts how silica slides on top of graphite surface... a super-lubricity on-off switch"
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