Observation of the Amontons-Coulomb law on the nanoscale: Frictional forces between flakes and surfaces
Department of Physics, Aichi University of Education
Hirosawa 1, Igaya-cho, Kariya 448-8542, Japan
Accepted: 21 February 2002
The MoS2 flake moves on MoS2 in such a way that the stacking of the sulphur basal plane of MoS2 is maintained. The frictional forces between MoS2 surfaces are clearly proportional to the loading force although they depend strongly on the movement of the MoS2 flake. The Amontons-Coulomb law is excellently satisfied at loading forces in the range of 1–120 nanonewtons. The frictional coefficient between MoS2 surfaces along the direction [ 100] of the MoS2(0001) surface is estimated to be approximately 0.003.
PACS: 81.40.Pq – Friction, lubrication, and wear / 68.37.Ef – Scanning tunneling microscopy (including chemistry induced with STM)
© EDP Sciences, 2002