Prandtl-Tomlinson model: History and applications in friction, plasticity, and nanotechnologies

Author(s):  
V.L. Popov ◽  
J.A.T. Gray
Keyword(s):  
2010 ◽  
Vol 1 ◽  
pp. 163-171 ◽  
Author(s):  
W Merlijn van Spengen ◽  
Viviane Turq ◽  
Joost W M Frenken

We have replaced the periodic Prandtl–Tomlinson model with an atomic-scale friction model with a random roughness term describing the surface roughness of micro-electromechanical systems (MEMS) devices with sliding surfaces. This new model is shown to exhibit the same features as previously reported experimental MEMS friction loop data. The correlation function of the surface roughness is shown to play a critical role in the modelling. It is experimentally obtained by probing the sidewall surfaces of a MEMS device flipped upright in on-chip hinges with an AFM (atomic force microscope). The addition of a modulation term to the model allows us to also simulate the effect of vibration-induced friction reduction (normal-force modulation), as a function of both vibration amplitude and frequency. The results obtained agree very well with measurement data reported previously.


Author(s):  
C. Mathew Mate ◽  
Robert W. Carpick

This chapter covers the current state of knowledge about how the shear strength (the force needed to slide one surface over another) originates at the atomic level. For adhesive friction, friction originates from the forces needed to move the atoms on one surface over the atomic structure of the opposing surface; the simplest model for adhesive friction is the cobblestone model. The Frenkel–Kontorova model, the Prandtl–Tomlinson model, and molecular dynamic simulations are typically used to show how the atomic structure of the surfaces leads to static friction. One exciting aspect of these friction models is the prediction of superlubricity or negligible friction for incommensurate sliding surfaces, which is now being realized in experiments. Also discussed is why superlubricity is not observed in real-life situations. As atoms and molecules slide over surfaces, kinetic friction originates from phonon and electronic excitations, which are typically studied using the quartz crystal microbalance (QCM).


1996 ◽  
Vol 53 (11) ◽  
pp. 7539-7549 ◽  
Author(s):  
Michael Weiss ◽  
Franz-Josef Elmer

2020 ◽  
Vol 22 (2) ◽  
pp. 023014 ◽  
Author(s):  
Boris Müller ◽  
Johannes Berner ◽  
Clemens Bechinger ◽  
Matthias Krüger
Keyword(s):  

2010 ◽  
Vol 82 (4) ◽  
Author(s):  
Jon Alm Eriksen ◽  
Soumyajyoti Biswas ◽  
Bikas K. Chakrabarti

2011 ◽  
Vol 43 (1) ◽  
pp. 73-76 ◽  
Author(s):  
Pin Lu ◽  
Yee Chong Loke ◽  
Xiaosong Tang ◽  
Sunil S. Kushvaha ◽  
Sean J. O’Shea
Keyword(s):  

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