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@ARTICLE{Dorogin:860479,
      author       = {Dorogin, L. and Persson, Bo},
      title        = {{C}ontact mechanics for polydimethylsiloxane: from liquid
                      to solid},
      journal      = {Soft matter},
      volume       = {14},
      number       = {7},
      issn         = {1744-6848},
      address      = {London},
      publisher    = {Royal Soc. of Chemistry},
      reportid     = {FZJ-2019-01233},
      pages        = {1142 - 1148},
      year         = {2018},
      abstract     = {Adhesion between a glass ball and a polydimethylsiloxane
                      (PDMS) sample is dependent on the PDMS cross-link density,
                      and the transformation of the material from the
                      uncrosslinked liquid state to the fully crosslinked solid
                      state is investigated in this study. The physical picture
                      reflected a gradual transition from capillary forces driven
                      contact mechanics to the classical
                      Johnson–Kendall–Roberts (JKR)-type contact mechanics.
                      PDMS was produced by mixing the base fluid and a
                      cross-linker at a ratio of 10 : 1 and allowed to slowly
                      cross-link at room temperature with simultaneous measurement
                      of the ball–PDMS interaction force. The PDMS sample was in
                      the liquid state during the first ≈16 hours, and in this
                      case the ball–PDMS interaction was purely adhesive, i.e.,
                      no repulsive interaction was observed. Later at the PDMS
                      gel-point the cross-linked PDMS clusters percolate,
                      converting the fluid into a soft (fluid-filled) poroelastic
                      solid. In the transition period, PDMS appears similar to
                      pressure-sensitive adhesives. There we observe so-called
                      “stringing” and permanent deformation of the material
                      impacted by the ball. At room temperature, it takes more
                      than ∼100 hours for PDMS to fully cross-link that can be
                      confirmed by the comparison with the earlier-studied
                      reference PDMS produced at elevated temperatures.},
      cin          = {IAS-1 / PGI-1 / JARA-FIT / JARA-HPC},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IAS-1-20090406 / I:(DE-Juel1)PGI-1-20110106 /
                      $I:(DE-82)080009_20140620$ / $I:(DE-82)080012_20140620$},
      pnm          = {141 - Controlling Electron Charge-Based Phenomena
                      (POF3-141)},
      pid          = {G:(DE-HGF)POF3-141},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:29345705},
      UT           = {WOS:000425180700008},
      doi          = {10.1039/C7SM02216F},
      url          = {https://juser.fz-juelich.de/record/860479},
}