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@ARTICLE{Lee:1028626,
      author       = {Lee, Namkyu and Wiegand, Simone},
      title        = {{T}hermal design of a non-isothermal microfluidic channel
                      for measuring thermophoresis},
      journal      = {International journal of heat and mass transfer},
      volume       = {231},
      issn         = {0017-9310},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2024-04699},
      pages        = {125871 -},
      year         = {2024},
      abstract     = {Thermophoresis describes mass transport in a non-isothermal
                      temperature field and thus provides a
                      fundamentalunderstanding of the behavior of colloidal
                      particles. Various methods have been proposed for
                      measuringthe Soret coefficient, a representative value of
                      thermophoresis. In particular, microscopic channels are
                      anemerging method as they shorten the equilibrium time and
                      allow direct observation of the particles. However,little
                      emphasis has been placed on the simultaneous consideration
                      of fluid dynamics, heat transfer, andmass transfer
                      characteristics within the microfluidic channel, despite the
                      simultaneous presence of naturalconvection and
                      thermodiffusion phenomena. In this study, we present a novel
                      approach to address this gap byintroducing a figure of
                      merit, which incorporates essential parameters to accurately
                      characterize a specific cellconfiguration. This figure of
                      merit allows for the identification of a reliable
                      measurement range in a microfluidicchannel with a
                      temperature gradient, while accounting for fluid dynamics,
                      heat transfer, and mass transfercharacteristics. The
                      proposed approach is validated through rigorous simulations
                      and experiments, enabling anevaluation of the impact of
                      figure of merit-derived parameters on the measurement
                      channel. The findings fromour study demonstrate that the
                      figure of merit serves as a representative measure for
                      stable thermophoreticmeasurements in a microfluidic channel.
                      Moreover, we propose a threshold value that signifies the
                      transitionfrom a diffusion-dominant to a convection-dominant
                      field.},
      cin          = {IBI-4},
      ddc          = {620},
      cid          = {I:(DE-Juel1)IBI-4-20200312},
      pnm          = {5241 - Molecular Information Processing in Cellular Systems
                      (POF4-524)},
      pid          = {G:(DE-HGF)POF4-5241},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:001265297700001},
      doi          = {10.1016/j.ijheatmasstransfer.2024.125871},
      url          = {https://juser.fz-juelich.de/record/1028626},
}