Technology & Engineering

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Media Contact:Jordan Reese | jreese@upenn.edu | 215-573-6604April 1, 2010

Nanotechnologists at Penn and Columbia Reveal the Frictional Characteristics of Atomically Thin Sheets

PHILADELPHIA –- A team of nanotechnology researchers from the University of Pennsylvania and Columbia University has used friction force microscopy to determine the nanoscale frictional characteristics of four atomically-thin materials, discovering a universal characteristic for these very different materials. Friction across these thin sheets increases as the number of atomic layers decreases, all the way down to one layer of atoms. This friction increase was surprising as there previously was no theory to predict this behavior.

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