Multiscale simulation on shearing transitions of thin-film lubrication with multi-layer molecules

Z. B. Wu, X. C. Zeng

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

Shearing transitions of multi-layer molecularly thin-film lubrication systems in variations of the film-substrate coupling strength and the load are studied by using a multiscale method. Three kinds of the interlayer slips found in decreasing the coupling strength are in qualitative agreement with experimental results. Although tribological behaviors are almost insensitive to the smaller coupling strength, they and the effective film thickness are enlarged more and more as the larger one increases. When the load increases, the tribological behaviors are similar to those in increasing coupling strength, but the effective film thickness is opposite.

Original languageEnglish (US)
Pages (from-to)6-14
Number of pages9
JournalChemical Physics Letters
Volume679
DOIs
StatePublished - 2017

Keywords

  • Coarse-graining model
  • Shear transitions
  • Thin-film lubrication
  • Tribology

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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