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@ARTICLE{Sivebaek:2766,
      author       = {Sivebaek, I. M. and Samoilov, V. N. and Persson, B. N. J.},
      title        = {{F}rictional properties of confined polymers},
      journal      = {The European physical journal / E},
      volume       = {27},
      issn         = {1292-8941},
      address      = {Berlin},
      publisher    = {Springer},
      reportid     = {PreJuSER-2766},
      pages        = {37 - 46},
      year         = {2008},
      note         = {A part of the present work was carried out in frames of the
                      ESF program "Nanotribology (NATRIBO)". Two of the authors
                      (I.M.S. and V.N.S.) acknowledge support from IFF, FZ-Julich,
                      hospitality and help of the staff during their research
                      visits.},
      abstract     = {We present molecular dynamics friction calculations for
                      confined hydrocarbon solids with molecular lengths from 20
                      to 1400 carbon atoms. Two cases are considered: a) polymer
                      sliding against a hard substrate, and b) polymer sliding on
                      polymer. In the first setup the shear stresses are
                      relatively independent of molecular length. For polymer
                      sliding on polymer the friction is significantly larger, and
                      dependent on the molecular chain length. In both cases, the
                      shear stresses are proportional to the squeezing pressure
                      and finite at zero load, indicating an adhesional
                      contribution to the friction force. The friction decreases
                      when the sliding distance is of the order of the molecular
                      length indicating a strong influence of molecular alignment
                      during run-in. The results of our calculations show good
                      correlation with experimental work.},
      keywords     = {Carbon: chemistry / Computer Simulation / Elasticity /
                      Equipment Design / Friction / Models, Theoretical / Physics:
                      methods / Polymers: chemistry / Pressure / Stress,
                      Mechanical / Surface Properties / Polymers (NLM Chemicals) /
                      Carbon (NLM Chemicals) / J (WoSType)},
      cin          = {IFF-1},
      ddc          = {530},
      cid          = {I:(DE-Juel1)VDB781},
      pnm          = {Kondensierte Materie},
      pid          = {G:(DE-Juel1)FUEK414},
      shelfmark    = {Chemistry, Physical / Materials Science, Multidisciplinary
                      / Physics, Applied / Polymer Science},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:19230226},
      UT           = {WOS:000259821300005},
      doi          = {10.1140/epje/i2008-10349-8},
      url          = {https://juser.fz-juelich.de/record/2766},
}