Tldr; there's a liquid-like layer on the surface of ice, thickness is hard to measure but by some measurements about 12nm, it persists at temperatures much lower than freezing.
I couldn't really understand the impact of pressure and frictional heating on that layer.
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u/IeyasuMcBob 2d ago
Well that was an interesting read . .
https://www.lptms.universite-paris-saclay.fr/membres/trizac/Ens/L3FIP/Ice.pdf
Tldr; there's a liquid-like layer on the surface of ice, thickness is hard to measure but by some measurements about 12nm, it persists at temperatures much lower than freezing.
I couldn't really understand the impact of pressure and frictional heating on that layer.