Nanoscale incipient asperity sliding and interface micro-slip assessed by the measurement of tangential contact stiffness Academic Article uri icon


  • Experiments with a multidimensional nano-contact system have shown that, prior to kinetic frictional sliding, there is a significant reduction of the tangential contact stiffness relative to the elastic prediction. The reduction occurs at contact sizes below about 50-200 nm for aluminum single crystals and several other materials. Using a cohesive interface model, we find that this reduction corresponds to a transition from a small-scale-slip to large-scale-slip condition of the interface. 2006 Acta Materialia Inc.

published proceedings

  • Scripta Materialia

author list (cited authors)

  • Gao, Y. F., Lucas, B. N., Hay, J. C., Oliver, W. C., & Pharr, G. M.

citation count

  • 29

complete list of authors

  • Gao, YF||Lucas, BN||Hay, JC||Oliver, WC||Pharr, GM

publication date

  • October 2006