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@ARTICLE{Nygrd:283695,
      author       = {Nygård, Kim and Sarman, Sten and Hyltegren, Kristin and
                      Chodankar, Shirish and Perret, Edith and Buitenhuis, Johan
                      and van der Veen, J. Friso and Kjellander, Roland},
      title        = {{D}ensity {F}luctuations of {H}ard-{S}phere {F}luids in
                      {N}arrow {C}onfinement},
      journal      = {Physical review / X},
      volume       = {6},
      number       = {1},
      issn         = {2160-3308},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {FZJ-2016-01992},
      pages        = {011014},
      year         = {2016},
      abstract     = {Spatial confinement induces microscopic ordering of fluids,
                      which in turn alters many of their dynamic and thermodynamic
                      properties. However, the isothermal compressibility has
                      hitherto been largely overlooked in the literature, despite
                      its obvious connection to the underlying microscopic
                      structure and density fluctuations in confined geometries.
                      Here, we address this issue by probing density profiles and
                      structure factors of hard-sphere fluids in various narrow
                      slits, using x-ray scattering from colloid-filled
                      nanofluidic containers and integral-equation-based
                      statistical mechanics at the level of pair distributions for
                      inhomogeneous fluids. Most importantly, we demonstrate that
                      density fluctuations and isothermal compressibilities in
                      confined fluids can be obtained experimentally from the
                      long-wavelength limit of the structure factor, providing a
                      formally exact and experimentally accessible connection
                      between microscopic structure and macroscopic, thermodynamic
                      properties. Our approach will thus, for example, allow
                      direct experimental verification of theoretically predicted
                      enhanced density fluctuations in liquids near solvophobic
                      interfaces.},
      cin          = {ICS-3},
      ddc          = {530},
      cid          = {I:(DE-Juel1)ICS-3-20110106},
      pnm          = {551 - Functional Macromolecules and Complexes (POF3-551)},
      pid          = {G:(DE-HGF)POF3-551},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000370248600002},
      doi          = {10.1103/PhysRevX.6.011014},
      url          = {https://juser.fz-juelich.de/record/283695},
}