Journal
PHYSICAL REVIEW LETTERS
Volume 90, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.90.055509
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An ultralubricated system is reported which confines a C-60 monolayer between graphite plates. C-60 molecules act as molecular bearings, assisted by the nanogears of six-membered carbon rings between C-60 molecules and graphite, in which the mean dynamical frictional forces are zero up to a high load of 100 nanonewtons. A stick-slip rolling model with a step rotation of a C-60 molecule is proposed. This ultralubricated system, very promising for the realization of nano- and micromachines, is expected to open a new field of molecular bearings.
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