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@ARTICLE{Sehnem:859035,
      author       = {Sehnem, André Luiz and Neto, Antônio Martins Figueiredo
                      and Niether, Doreen and Wiegand, Simone},
      title        = {{D}iffusiophoresis as ruling effect: {I}nfluence of organic
                      salts on thermodiffusion of iron oxide nanoparticles},
      journal      = {Physical review / E},
      volume       = {98},
      number       = {6},
      issn         = {2470-0045},
      address      = {Woodbury, NY},
      publisher    = {Inst.},
      reportid     = {FZJ-2019-00005},
      pages        = {062615},
      year         = {2018},
      abstract     = {Colloidal particles, including ferrofluidic nanoparticles
                      (NP), move in a temperature gradient due to thermodiffusion.
                      Organic salts, which are often added to disperse the NP in
                      aqueous solution, also move in the temperature gradient.
                      This can have a strong influence on the behaviour of the NP,
                      which not only respond to the temperature gradient, but also
                      to the concentration gradient of the dispersive salt, an
                      effect termed diffusiophoresis. In this work we present
                      experimental results on thermodiffusion of iron oxide
                      nanoparticlesdispersed in aqueous solutions of organic
                      hydroxides, which illustrate $\%the$ possibility of
                      expressive changes in thermodiffusion of nanoparticles. the
                      possibility to manipulate the thermodiffusion of NP through
                      the addition of organic salts. Our experiments investigate
                      the temperature dependence of the particles' Soret
                      coefficient, a recurring question on thermodiffusion of
                      water dispersed particles. Existing theoretical approaches
                      are compared and we relate the Soret coefficient of the NP
                      with two main physical parameters ruling particle motion:
                      the NP's electrostatic potential and the Soret coefficient
                      of the dispersing ions. These parameters are also
                      experimentally determined. At the order of magnitude of the
                      NP's Soret coefficient good agreement between experiments
                      and theory is achieved by including the experimental data on
                      the Soret coefficient of the dispersing ions and therefore
                      the NP's displacement due to the ion concentration gradient.
                      Taking into account the temperature dependence of such
                      previously unknown parameters is a relevant step to describe
                      the temperature dependence of the NP's Soret coefficient.},
      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:000454428800014},
      doi          = {10.1103/PhysRevE.98.062615},
      url          = {https://juser.fz-juelich.de/record/859035},
}