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4.1
100 reviewsThe low kinetic friction between ice and numerous counterbodies is commonly attributed to aninterfacial water layer, which is believed to originate from preexisting surface water or from melt waterinduced by high contact pressures or frictional heat. However, even the currently leading theory of frictionalmelting appears to defy direct experimental verification. Here we present molecular simulations of iceinterfaces that reveal that ice surfaces liquefy without melting thermodynamically but predominantly bycold, displacement-driven amorphization. Despite effective self-lubrication, very small ice friction is foundto require water to slip past a hydrophobic counterface—or an excess amount of water, produced by, e.g.,extreme sliding velocities.DOI: 10.1103/1plj-7p4z
