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@ARTICLE{Mecke:1006972,
      author       = {Mecke, Joscha and Ripoll, Marisol},
      title        = {{B}irotor hydrodynamic microswimmers: {F}rom single to
                      collective behaviour(a)},
      journal      = {epl},
      volume       = {142},
      number       = {2},
      issn         = {0295-5075},
      address      = {Les Ulis},
      publisher    = {EDP Sciences},
      reportid     = {FZJ-2023-01923},
      pages        = {27001},
      year         = {2023},
      abstract     = {A microswimmer composed of two oppositely rotating strongly
                      coupled colloids in solution is here termed as birotor and
                      investigated by means of hydrodynamic simulations. The
                      related flow fields, swimmer velocities, and rotational
                      diffusion are controlled by the properties of the fluid, the
                      swimmer geometry, rotation frequency, and also by the
                      substrate friction. Resulting from mutual hydrodynamic and
                      steric interactions, birotor pairs might follow one another,
                      or more frequently rotate around each other. For larger
                      number of interacting swimmers the continuous formation and
                      dissolution of small and rotating aggregates dominates the
                      collective dynamics. The birotors motion is hydrodynamically
                      enhanced at short distances, such that the average velocity
                      of the swimmers shows to increase with density for the
                      investigated range of densities. This is compensated by a
                      decrease of rotational diffusive time, making that the
                      overall effective diffusion decreases with density. These
                      results constitute the first systematic analysis of the
                      birotor microswimmer, which could be also further modified
                      as an easy to manipulate active particle for various
                      potential applications.},
      cin          = {IBI-5 / IAS-2},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IBI-5-20200312 / I:(DE-Juel1)IAS-2-20090406},
      pnm          = {5243 - Information Processing in Distributed Systems
                      (POF4-524)},
      pid          = {G:(DE-HGF)POF4-5243},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000971126100001},
      doi          = {10.1209/0295-5075/acc8f8},
      url          = {https://juser.fz-juelich.de/record/1006972},
}