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Simulation of superlubricity of C60 molecular bearing is performed based on molecular mechanics. Atomic-scale frictional feature along [10 0] direction of the graphite/C60/graphite interface is numerically investigated compared with that of the graphite/graphite/graphite interface. Simulated interlayer distances of about 1.3nm are in good agreement with previous experimental results[1-3]. Atomic-scale friction coefficient of graphite/C60/graphite interface decreases to about 30% of that of the graphite/graphite/graphite interface. It is clarified that three-dimensional degree of freedom of intercalated C60 motion is one of origins of ultralow friction of graphite/C60/graphite interface along [10 0] direction.

Atomic-scale ultralow friction – simulation of superlubricity of C60molecular bearing

Atomic-scale ultralow friction – simulation of superlubricity of C₆₀molecular bearing