Frictional Forces and Amontons' Law: From the Molecular to the Macroscopic Scale

@article{Gao2004FrictionalFA,
  title={Frictional Forces and Amontons' Law: From the Molecular to the Macroscopic Scale},
  author={Jianping Gao and W. D. Luedtke and Delphine Gourdon and Marina Ruths and Jacob N. Israelachvili and Uzi Landman},
  journal={Journal of Physical Chemistry B},
  year={2004},
  volume={108},
  pages={3410-3425}
}
We review the historical and modern understanding of the most basic equation of friction, Amontons' law, which describes phenomena that were already understood and studied by Leonardo da Vinci 500 years ago. This law states that for any two materials the (lateral) friction force is directly proportional to the (normal) applied load, with a constant of proportionality, the friction coefficient, that is constant and independent of the contact area, the surface roughness, and the sliding velocity… Expand
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