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@ARTICLE{Singh:155674,
      author       = {Singh, Sunil Pratap and Huang, Chien-Cheng and Westphal,
                      Elmar and Gompper, Gerhard and Winkler, Roland G.},
      title        = {{H}ydrodynamic correlations and diffusion coefficient of
                      star polymers in solution},
      journal      = {The journal of chemical physics},
      volume       = {141},
      issn         = {1089-7690},
      address      = {Melville, NY},
      publisher    = {American Institute of Physics},
      reportid     = {FZJ-2014-04727},
      pages        = {084901},
      year         = {2014},
      abstract     = {The center-of-mass dynamics of star polymers in dilute
                      solution is analyzed by hybrid mesoscale simulations. The
                      fluid is modeled by the multiparticle collision dynamics
                      approach, a particle-based hydrodynamic simulation
                      technique, which is combined with molecular dynamics
                      simulations for the polymers. Star polymers of various
                      functionalities are considered. We determine the
                      center-of-mass velocity correlation functions, the
                      corresponding mean square displacements, and diffusion
                      coefficients. The velocity correlation functions exhibit a
                      functionality-dependent and structure-specific intermediate
                      time regime, with a slow decay. It is followed by the
                      long-time tail t −3/2, which is solely determined by the
                      fluid. Infinite-system-size diffusion coefficients are
                      determined from the velocity correlation function by a
                      combination of simulation and analytical results, as well as
                      from the center-of-mass mean square displacement for various
                      systems sizes and extrapolation. In terms of the
                      hydrodynamic radius, the star polymer hydrodynamic diffusion
                      coefficient exhibits the same universal system-size
                      dependence as a spherical colloid. The functionality
                      dependence of the ratio of hydrodynamic radii and the radii
                      of gyration agrees well with experimental predictions.},
      cin          = {IAS-2 / ICS-2},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IAS-2-20090406 / I:(DE-Juel1)ICS-2-20110106},
      pnm          = {451 - Soft Matter Composites (POF2-451)},
      pid          = {G:(DE-HGF)POF2-451},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000341987600045},
      doi          = {10.1063/1.4893766},
      url          = {https://juser.fz-juelich.de/record/155674},
}