Friction laws at the nanoscale

By Yifei Mo, K. Turner, I. Szlufarska. Nature, 2009

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Colloquium: Modeling friction: From nanoscale to mesoscale (2011, background): “However, recent simulations (Mo, Turner, and Szlufarska, 2009) revealed that, even for an apparently sharp AFM tip sliding on a crystalline surface, the actual interface consists of an ensemble of individual atomic contacts (see Fig.”
Modeling and simulation in tribology across scales: An overview (2018, neutral): “” For the latter, one method of calculation involves the assumption that the real contact area is the sum of the contact areas of each atom determined to be in contact [244,396].”
Electron vortices: Beams with orbital angular momentum (2017, background): “This suggests that the electron vortex beam may become a useful tool in the investigation of friction at the nanoscale, which is still not well understood (Mo et al., 2009).”
On the Application of Transition State Theory to Atomic-Scale Wear (2010, background): “Already, there is a developing body of literature where these techniques are used to characterize the contact area and stresses (normal and frictional) of a nanoscale contact (for example, [45, 46, 62]).”