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@ARTICLE{Saggiorato:256219,
      author       = {Saggiorato, Guglielmo and Elgeti, Jens and Winkler, Roland
                      G. and Gompper, Gerhard},
      title        = {{C}onfirmations, hydrodynamic interactions, and
                      instabilities of sedimenting semiflexible filaments},
      journal      = {Soft matter},
      volume       = {11},
      number       = {37},
      issn         = {1744-6848},
      address      = {London},
      publisher    = {Royal Soc. of Chemistry},
      reportid     = {FZJ-2015-06195},
      pages        = {7337 - 7344},
      year         = {2015},
      abstract     = {The conformations and dynamics of semiflexible filaments
                      subject to a homogeneous external (gravitational) field,
                      e.g., in a centrifuge, are studied numerically and
                      analytically. The competition between hydrodynamic drag and
                      bending elasticity generates new shapes and dynamical
                      features. We show that the shape of a semiflexible filament
                      undergoes instabilities as the external field increases. We
                      identify two transitions that correspond to the excitation
                      of higher bending modes. In particular, for strong fields
                      the filament stabilizes in a non-planar shape, resulting in
                      a sideways drift or in helical trajectories. For two
                      interacting filaments, we find the same transitions, with
                      the important consequence that the new non-planar shapes
                      have an effective hydrodynamic repulsion, in contrast to the
                      planar shapes which attract themselves even when their
                      osculating planes are rotated with respect to each other.
                      For the case of planar filaments, we show analytically and
                      numerically that the relative velocity is not necessarily
                      due to a different drag of the individual filaments, but to
                      the hydrodynamic interactions induced by their shape
                      asymmetry.},
      cin          = {IAS-2 / ICS-2},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IAS-2-20090406 / I:(DE-Juel1)ICS-2-20110106},
      pnm          = {553 - Physical Basis of Diseases (POF3-553)},
      pid          = {G:(DE-HGF)POF3-553},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000361550000014},
      pubmed       = {pmid:26270609},
      doi          = {10.1039/C5SM01069A},
      url          = {https://juser.fz-juelich.de/record/256219},
}