Velocity dependence of sliding friction on a crystalline surface
| Autor: | Christian Apostoli, Andrea Vanossi, Giovanni Giusti, Rosario Capozza, Jacopo Ciccoianni, Emanuele Panizon, Rosalie Laure Woulaché, Gabriele Riva, Nicola Manini |
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| Rok vydání: | 2017 |
| Předmět: |
atomic-scale friction
Materials science Phonon Point particle friction phonons General Physics and Astronomy Computer Science::Human-Computer Interaction 02 engineering and technology lcsh:Chemical technology Kinetic energy lcsh:Technology 01 natural sciences Atomic units Full Research Paper Physics::Geophysics Slider 0103 physical sciences Nanotechnology lcsh:TP1-1185 General Materials Science Dynamical friction Electrical and Electronic Engineering lcsh:Science 010306 general physics lcsh:T nanotribology dissipation Mechanics Dissipation 021001 nanoscience & nanotechnology lcsh:QC1-999 Nanoscience Classical mechanics Nanotribology lcsh:Q velocity dependence 0210 nano-technology contact lcsh:Physics |
| Zdroj: | Beilstein Journal of Nanotechnology, Vol 8, Iss 1, Pp 2186-2199 (2017) Beilstein journal of nanotechnology 8 (2017): 2186–2199. doi:10.3762/bjnano.8.218 info:cnr-pdr/source/autori:Apostoli C.; Giusti G.; Ciccoianni J.; Riva G.; Capozza R.; Woulache R.L.; Vanossi A.; Panizon E.; Manini N./titolo:Velocity dependence of sliding friction on a crystalline surface/doi:10.3762%2Fbjnano.8.218/rivista:Beilstein journal of nanotechnology/anno:2017/pagina_da:2186/pagina_a:2199/intervallo_pagine:2186–2199/volume:8 Beilstein Journal of Nanotechnology |
| ISSN: | 2190-4286 |
| DOI: | 10.3762/bjnano.8.218 |
| Popis: | We introduce and study a minimal 1D model for the simulation of dynamic friction and dissipation at the atomic scale. This model consists of a point mass (slider) that moves over and interacts weakly with a linear chain of particles interconnected by springs, representing a crystalline substrate. This interaction converts a part of the kinetic energy of the slider into phonon waves in the substrate. As a result, the slider experiences a friction force. As a function of the slider speed, we observe dissipation peaks at specific values of the slider speed, whose nature we understand by means of a Fourier analysis of the excited phonon modes. By relating the phonon phase velocities with the slider velocity, we obtain an equation whose solutions predict which phonons are being excited by the slider moving at a given speed. |
| Databáze: | OpenAIRE |
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