Dynamic phase transitions in confined lubricant fluids under shear.

  title={Dynamic phase transitions in confined lubricant fluids under shear.},
  author={Chris. Drummond and Jacob N Israelachvili},
  journal={Physical review. E, Statistical, nonlinear, and soft matter physics},
  volume={63 4 Pt 1},
A surface force apparatus was used to measure the transient and steady-state friction forces between molecularly smooth mica surfaces confining thin films of squalane, C30H62, a saturated, branched hydrocarbon liquid. The dynamic friction "phase diagram" was determined under different shearing conditions, especially the transitions between stick-slip and smooth sliding "states" that exhibited a chaotic stick-slip regime. The apparently very different friction traces exhibited by simple… CONTINUE READING
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