Shearing Nanometer-Thick Confined Hydrocarbon Films: Friction and Adhesion

I. M. Sivebæk, B. N. J. Persson

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Abstract

We present molecular dynamics (MD) friction and adhesion calculations for nanometer-thick confined hydrocarbon films with molecular lengths 20, 100 and 1400 carbon atoms. We study the dependency of the frictional shear stress on the confining pressure and sliding speed. We present results for the pull-off force as a function of the pull-off speed and the sliding speed. Some of the results are analyzed using the simple cobblestone model and good semiquantitative agreement between the model predictions, and the MD results are found.
Original languageEnglish
JournalTRIBOLOGY LETTERS
Volume62
Issue number5
Number of pages7
ISSN1023-8883
DOIs
Publication statusPublished - 2016

Keywords

  • Tribology
  • Adhesion
  • Molecular dynamics
  • Nanometer hydrocarbon films

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