Video of the Simulation (VIDEO)

International School of Advanced Studies (SISSA)

Caption

The video compares the two sliding states of the C60 flake attached to the tip of the microscope: a) commensurate state at low temperature where the C60 do not rotate and the system shows stick-slip (high) friction and b) incommensurate state at high temperature where the C60 rotate and the flake moves more smoothly (low friction). The green points simply colour one of the 60 atoms making up the C60 molecules to better highlight the absence/presence of rotation below/above the critical temperature.

Credit

SISSA

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