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@ARTICLE{Ning:54004,
      author       = {Ning, H. and Buitenhuis, J. and Dhont, J. K. G. and
                      Wiegand, S.},
      title        = {{T}hermal diffusion behavior of hard-sphere suspensions},
      journal      = {The journal of chemical physics},
      volume       = {125},
      issn         = {0021-9606},
      address      = {Melville, NY},
      publisher    = {American Institute of Physics},
      reportid     = {PreJuSER-54004},
      pages        = {204911},
      year         = {2006},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {We studied the thermal diffusion behavior of octadecyl
                      coated silica particles (R(h)=27 nm) in toluene between 15.0
                      and 50.0 degrees C in a volume fraction range of $1\%-30\%$
                      by means of thermal diffusion forced Rayleigh scattering.
                      The colloidal particles behave like hard spheres at high
                      temperatures and as sticky spheres at low temperatures. With
                      increasing temperature, the obtained Soret coefficient S(T)
                      of the silica particles changed sign from negative to
                      positive, which implies that the colloidal particles move to
                      the warm side at low temperatures, whereas they move to the
                      cold side at high temperatures. Additionally, we observed
                      also a sign change of the Soret coefficient from positive to
                      negative with increasing volume fraction. This is the first
                      colloidal system for which a sign change with temperature
                      and volume fraction has been observed. The concentration
                      dependence of the thermal diffusion coefficient of the
                      colloidal spheres is related to the colloid-colloid
                      interactions, and will be compared with an existing
                      theoretical description for interacting spherical particles.
                      To characterize the particle-particle interaction
                      parameters, we performed static and dynamic light scattering
                      experiments. The temperature dependence of the thermal
                      diffusion coefficient is predominantly determined by single
                      colloidal particle properties, which are related to
                      colloid-solvent molecule interactions.},
      keywords     = {J (WoSType)},
      cin          = {IFF-IWM},
      ddc          = {540},
      cid          = {I:(DE-Juel1)VDB343},
      pnm          = {Kondensierte Materie},
      pid          = {G:(DE-Juel1)FUEK414},
      shelfmark    = {Physics, Atomic, Molecular $\&$ Chemical},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:17144744},
      UT           = {WOS:000242408100065},
      doi          = {10.1063/1.2400860},
      url          = {https://juser.fz-juelich.de/record/54004},
}