Contact: Jordan Reese
University of Pennsylvania
Caption: The movie simulates the process of a tiny tip (with a radius of tens of nanometers, of ~ 10 nm) coming into contact and sliding on suspended elastic thin sheets (with thicknesses of one and four atomic layers respectively), such as graphene or molybdenum disulphide. Because of the attractive interactions between the two surfaces, the thinner sheet snaps on to the tip as it approaches the sample and forms a puckered region.
Credit: University of Pennsylvania and Science
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Related news release: Nanotechnologists reveal the frictional characteristics of atomically thin sheets