https://doi.org/10.1140/epjb/e2014-50584-3
Regular Article
Angular dependence of atomic friction with deformable substrate
1 Department of Physics, Laboratory of
Mechanics, Faculty of Science, University of Yaoundé 1, P.O. Box 812, Yaoundé,
Cameroon
2 Centre d’Excellence en Technologies
de l’Information et de la Communication (CETIC), University of Yaoundé 1,
Yaoundé,
Cameroon
a
e-mail: kdjuidje@yahoo.fr
Received:
26
August
2014
Received in final form:
1
November
2014
Published online:
14
January
2015
The atomic stick-slip behavior of Prandtl-Tomlinson model sliding on 2D deformable substrate is studied. The influence of the shape of the interaction potential is investigated in details in the well-known phenomenon of the two-dimensional stick-slip friction. Numerical simulations are built to observe the influence of the geometry and orientation. The results show that the friction force has a maximum at r = − 0.6, this value of the shape parameter indicates a transition from a clear stick-slip at r> − 0.6 to a distorted stick-slip at r< − 0.6. We find a remarkable transition of the frictional force image pattern depending on the shape of the substrate.
Key words: Solid State and Materials
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2015