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@ARTICLE{Liebetreu:844680,
      author       = {Liebetreu, Maximilian and Ripoll, Marisol and Likos,
                      Christos N.},
      title        = {{T}refoil {K}not {H}ydrodynamic {D}elocalization on
                      {S}heared {R}ing {P}olymers},
      journal      = {ACS Macro Letters},
      volume       = {7},
      issn         = {2161-1653},
      address      = {Washington, DC},
      publisher    = {ACS},
      reportid     = {FZJ-2018-02065},
      pages        = {447 - 452},
      year         = {2018},
      abstract     = {The behavior of unknotted and trefoil-knotted ring polymers
                      under shear flow is here examined by means of mesoscopic
                      simulations. In contrast to most polymers, ring polymers in
                      a hydrodynamic solvent at high shear rates do not get
                      shortened in the vorticity direction. This is a consequence
                      of the backflow produced by the interaction of the sheared
                      solvent with the end-free polymer topology. The extended
                      structures of the ring in the vorticity-flow plane, when
                      they are aligned in a constant velocity plane, favor ring
                      contour fluctuations. This variety of conformations largely
                      suppresses the tank-treading type of rotation with extended
                      conformations in favor of the tumbling type of rotations,
                      where stretched and collapsed conformations alternate. The
                      extension of trefoil knots is also enhanced, so that the
                      knots become delocalized. We anticipate that these effects,
                      which disappear in the absence of hydrodynamic interactions,
                      will have a crucial impact on the rheological properties of
                      concentrated ring solutions, and will also influence the
                      behavior of more complicated systems such as mixtures of
                      polymers with different topologies.},
      cin          = {ICS-2},
      ddc          = {540},
      cid          = {I:(DE-Juel1)ICS-2-20110106},
      pnm          = {551 - Functional Macromolecules and Complexes (POF3-551)},
      pid          = {G:(DE-HGF)POF3-551},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000430515500010},
      doi          = {10.1021/acsmacrolett.8b00059},
      url          = {https://juser.fz-juelich.de/record/844680},
}