Sunday, April 04, 2010
Frictional Characteristics of Atomically Thin Sheets -- Lee et al. 328 (5974): 76 -- Science
Frictional Characteristics of Atomically Thin Sheets -- Lee et al. 328 (5974): 76 -- Science: "Using friction force microscopy, we compared the nanoscale frictional characteristics of atomically thin sheets of graphene, molybdenum disulfide (MoS2), niobium diselenide, and hexagonal boron nitride exfoliated onto a weakly adherent substrate (silicon oxide) to those of their bulk counterparts. Measurements down to single atomic sheets revealed that friction monotonically increased as the number of layers decreased for all four materials. Suspended graphene membranes showed the same trend, but binding the graphene strongly to a mica surface suppressed the trend"
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