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@INPROCEEDINGS{Wang:154518,
      author       = {Wang, Zilin and Dhont, Jan K.G. and Buitenhuis, Johan and
                      Wiegand, Simone},
      title        = {{T}hermophoresis of a colloidal rod: {S}teric and
                      electrostatic contributions},
      school       = {University of Cologne},
      reportid     = {FZJ-2014-03832},
      year         = {2014},
      abstract     = {We studied the thermal diffusion behavior of dilute
                      solutions of rod-like, charged colloids (fd-virusparticles)
                      and fd-virus grafted by PEO (polyethylene oxide, Mw = 5000
                      g/mol) usinga holographic grating technique Thermal
                      Diffusion Forced Rayleigh Scattering (TDFRS). Thesteric and
                      electrostatic contributions have been investigated as a
                      function of the ionic strength,which corresponds to
                      different Debye length. In the short Debye length regime we
                      found aclear contribution from the polymer chain, which
                      fades out in the longer Debye length regime,where the
                      polymer chains fit into the electric double layer.
                      Furthermore for the non-grafted fd-viruseswe found their
                      Soret coefficient increases monotonically with increasing
                      Debye length,while there is a relatively weak dependence on
                      the rod-concentration when the ionic strengthis kept
                      constant. An existing theory for thermal diffusion of
                      charged spheres is extended todescribe the thermal diffusion
                      of long and thin charged rods, leading to an expression for
                      theSoret coefficient in terms of the Debye length, the
                      rod-core dimensions, and the surface chargedensity. The
                      thermal diffusion coefficient of a charged colloidal rod is
                      shown to be accuratelyrepresented, for arbitrary Debye
                      lengths, by a superposition of spherical beads with the
                      samediameter of the rod and the same surface charge.},
      month         = {Jun},
      date          = {2014-06-02},
      organization  = {11th International Meeting on
                       Thermodiffusion, Bayonne (France), 2
                       Jun 2014 - 6 Jun 2014},
      subtyp        = {After Call},
      cin          = {ICS-3},
      cid          = {I:(DE-Juel1)ICS-3-20110106},
      pnm          = {451 - Soft Matter Composites (POF2-451)},
      pid          = {G:(DE-HGF)POF2-451},
      typ          = {PUB:(DE-HGF)6},
      url          = {https://juser.fz-juelich.de/record/154518},
}