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@ARTICLE{Lorenz:141858,
      author       = {Lorenz, B and Krick, B A and Mulakaluri, N. and Smolyakova,
                      M. and Dieluweit, S and Sawyer, W G and Persson, Bo},
      title        = {{A}dhesion: role of bulk viscoelasticity and surface
                      roughness},
      journal      = {Journal of physics / Condensed matter},
      volume       = {25},
      number       = {22},
      issn         = {1361-648X},
      address      = {Bristol},
      publisher    = {IOP Publ.},
      reportid     = {FZJ-2014-00196},
      pages        = {225004},
      year         = {2013},
      abstract     = {We study the adhesion between smooth polydimethylsiloxane
                      (PDMS) rubber balls and smooth and rough poly(methyl
                      methacrylate) (PMMA) surfaces, and between smooth silicon
                      nitride balls and smooth PDMS surfaces. From the measured
                      viscoelastic modulus of the PDMS rubber we calculate the
                      viscoelastic contribution to the crack-opening propagation
                      energy γeff(v,T) for a wide range of crack tip velocities v
                      and for several temperatures T. The
                      Johnson–Kendall–Roberts (JKR) contact mechanics theory
                      is used to analyze the ball pull-off force data, and
                      γeff(v,T) is obtained for smooth and rough surfaces. We
                      conclude that γeff(v,T) has contributions of similar
                      magnitude from both the bulk viscoelastic energy dissipation
                      close to the crack tip, and from the bond-breaking process
                      at the crack tip. The pull-off force on the rough surfaces
                      is strongly reduced compared to that of the flat surface,
                      which we attribute mainly to the decrease in the area of
                      contact on the rough surfaces.},
      cin          = {PGI-1 / IAS-1 / ICS-7},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-1-20110106 / I:(DE-Juel1)IAS-1-20090406 /
                      I:(DE-Juel1)ICS-7-20110106},
      pnm          = {424 - Exploratory materials and phenomena (POF2-424)},
      pid          = {G:(DE-HGF)POF2-424},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000319262200005},
      doi          = {10.1088/0953-8984/25/22/225004},
      url          = {https://juser.fz-juelich.de/record/141858},
}