Why does ice stick on your finger
Why does ice get stickier the colder it gets? [Duplicate]
It's really complex and Shep's answer is a little inaccurate.
Ice at temperatures just below freezing point has the remarkable property of not being frozen on the surface. There is an extremely thin layer of liquid water on the surface. How thin 70 nm at 272 K, but only 10 nm at 262 K. This layer of water can act as a lubricant, but with less lubricant the friction is higher.
So it is not the heat of your finger that is causing the layer of fluid. It's always there.
The second problem with Shep's answer is the idea of re-freezing. It's unclear exactly what he means by this, but a heat wave is not like a wave in water. Heat will diffuse back. You don't get heat waves.
The aforementioned icy metal post is very effective in transferring heat. Metals behave quite well. In comparison, the ice cube does not conduct well and where it is melted, the conductivity is even lower.
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