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@ARTICLE{Opdam:893819,
      author       = {Opdam, J. and Guu, D. and Schelling, M. P. M. and Aarts, D.
                      G. A. L. and Tuinier, R. and Lettinga, M. P.},
      title        = {{P}hase stability of colloidal mixtures of spheres and
                      rods},
      journal      = {The journal of chemical physics},
      volume       = {154},
      number       = {20},
      issn         = {1089-7690},
      address      = {Melville, NY},
      publisher    = {American Institute of Physics},
      reportid     = {FZJ-2021-02858},
      pages        = {204906 -},
      year         = {2021},
      abstract     = {We determined the phase boundaries of aqueous mixtures
                      containing colloidal rod-like $\textit{fd}-viruses$ and
                      polystyrene spheres using diffusing-wave spectroscopy and
                      compared the results with free volume theory predictions.
                      Excluded volume interactions in mixtures of colloidal rods
                      and spheres lead to mediated depletion interactions. The
                      strength and range of this attractive interaction depend on
                      the concentrations of the particles, the length $L$ and
                      diameter $D$ of the rods and the radius $R$ of the spheres.
                      At strong enough attraction, this depletion interaction
                      leads to phase separation. We experimentally determined the
                      rod and sphere concentrations where these phase transitions
                      occur by systematically varying the size ratios $L/R$ and
                      $D/R$ and the aspect ratio $L/D$. This was done by using
                      spheres with different radii and modifying the effective
                      diameter of the rods through either the ionic strength of
                      the buffer or anchoring a polymeric brush to the surface of
                      the rods. The observed phase transitions were from a binary
                      fluid to a colloidal gas/liquid phase coexistence which
                      occurred already at very low concentrations due to the
                      depletion efficiency of highly anisotropic rods. The
                      experimentally measured phase transitions were compared to
                      phase boundaries obtained using free volume theory (FVT), a
                      well established theory for calculating the phase behaviour
                      of colloidal particles mixed with depletants. We find good
                      correspondence between the experimental phase transitions
                      and the theoretical FVT model where the excluded volume of
                      the rod-like depletants was explicitly accounted for in both
                      the reservoir and the system.},
      cin          = {IBI-4},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IBI-4-20200312},
      pnm          = {5243 - Information Processing in Distributed Systems
                      (POF4-524)},
      pid          = {G:(DE-HGF)POF4-5243},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {34241181},
      UT           = {WOS:000692825100003},
      doi          = {10.1063/5.0048809},
      url          = {https://juser.fz-juelich.de/record/893819},
}