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@INPROCEEDINGS{Afanasenkau:187640,
      author       = {Afanasenkau, Dzmitry and Syshchyk, Olga and Kunitskaya,
                      Yulia and Wang, Zilin and Wiegand, Simone},
      title        = {{S}tudying {S}oret effect using microfluidic cell},
      reportid     = {FZJ-2015-01266},
      year         = {2014},
      abstract     = {Soert effect (thermophoresis or thermodiffusion) is
                      transport of mass in a multicomponent system due to presence
                      of a temperature gradient. The effect nowdays finds many
                      application in (bio)chemical analisys, separation of
                      mixtures, biotechnology and semiconductor industry.To study
                      the effect one needs to create relatively high temperature
                      gradients keeping the temperature difference at the same
                      time relatively small to maintain the linearity of the
                      system. We try to achive this by reducing the dimensions of
                      the system. We developed a microfluidic cell which allows
                      observing thermal diffusion in the solution of colloids and
                      could be also applied for investigation of thermophoretic
                      phenomena in biological systems such as lipid bilayers and
                      living cells.The developed cell consist of three channels:
                      two relatively big ones for providing high flow rate of hot
                      and cold liquid and a small channel in between them which
                      contains the sample to study. The cell is produced by
                      micromilling the Plexiglas block with a CNC machine. The
                      central channel is made very flat (hight=30 um, width=100
                      um) to prevent convection.To characterize the temperature
                      distribution in our cell we used fluorescence life-time
                      microscopy (FLIM) with Rhodamine B as a temperature
                      sensitive dye.The cell was applied to investigate
                      thermodiffusion of latex micro and nano beads in a size
                      range from 25 nm to 1 mn in water. The Sore coefficient for
                      all investigated particle sizes was defined from the
                      equilibrium distribution. For nanobeads it was compared with
                      the values obtained by TDFRS measurements.},
      month         = {Nov},
      date          = {2014-11-11},
      organization  = {Jülich Soft Matter Days 2014, Bad
                       Honnef (Germany), 11 Nov 2014 - 14 Nov
                       2014},
      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)1},
      url          = {https://juser.fz-juelich.de/record/187640},
}