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@ARTICLE{Hoth:173415,
      author       = {Hoth, Judith and Hausen, Florian and Müser, Martin and
                      Bennewitz, Roland},
      title        = {{F}orce microscopy of layering and friction in an ionic
                      liquidus},
      journal      = {Journal of physics / Condensed matter},
      volume       = {26},
      number       = {28},
      issn         = {1361-648X},
      address      = {Bristol},
      publisher    = {IOP Publ.},
      reportid     = {FZJ-2014-06825},
      pages        = {284110},
      year         = {2014},
      abstract     = {The mechanical properties of the ionic liquid
                      1-butyl-1-methylpyrrolidinium tris(pentafluoroethyl)
                      trifluorophosphate ([Py1,4][FAP]) in confinement between a
                      SiOx and a Au(1 1 1) surface are investigated by means
                      of atomic force microscopy (AFM) under electrochemical
                      control. Up to 12 layers of ion pairs can be detected
                      through force measurements while approaching the tip of the
                      AFM to the surface. The particular shape of the force versus
                      distance curve is explained by a model for the interaction
                      between tip, gold surface and ionic liquid, which assumes an
                      exponentially decaying oscillatory force originating from
                      bulk liquid density correlations. Jumps in the tip–sample
                      distance upon approach correspond to jumps of the compliant
                      force sensor between branches of the oscillatory force
                      curve. Frictional force between the laterally moving tip and
                      the surface is detected only after partial penetration of
                      the last double layer between tip and surface.},
      cin          = {JSC},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JSC-20090406},
      pnm          = {411 - Computational Science and Mathematical Methods
                      (POF2-411)},
      pid          = {G:(DE-HGF)POF2-411},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000338830300011},
      pubmed       = {pmid:24919549},
      doi          = {10.1088/0953-8984/26/28/284110},
      url          = {https://juser.fz-juelich.de/record/173415},
}