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@ARTICLE{Squarcini:877248,
      author       = {Squarcini, A. and Maciołek, A. and Eisenriegler, E. and
                      Dietrich, S.},
      title        = {{C}ritical {C}asimir interaction between colloidal
                      {J}anus-type particles in two spatial dimensions},
      journal      = {Journal of statistical mechanics: theory and experiment},
      volume       = {2020},
      number       = {4},
      issn         = {1742-5468},
      address      = {Bristol},
      publisher    = {IOP Publ.},
      reportid     = {FZJ-2020-02074},
      pages        = {043208},
      year         = {2020},
      abstract     = {We study colloidal particles with chemically inhomogeneous
                      surfaces suspended in a critical binary liquid mixture. The
                      inhomogeneous particle surface is composed of patches with
                      alternating adsorption preferences for the two components of
                      the binary solvent. By describing the binary liquid mixture
                      at its consolute point in terms of the critical Ising model
                      we exploit its conformal invariance in two spatial
                      dimension. This allows us to determine exactly the universal
                      profiles of the order parameter, the energy density, and the
                      stress tensor as well as some of their correlation functions
                      around a single particle for various shapes and
                      configurations of the surface patches. The formalism
                      encompasses several interesting configurations, including
                      Janus particles of circular and needle shapes with dipolar
                      symmetry and a circular particle with quadrupolar symmetry.
                      From these single-particle properties we construct the
                      so-called small particle operator expansion (SPOE), which
                      enables us to obtain asymptotically exact expressions for
                      the position- and orientation-dependent critical Casimir
                      interactions of the particles with distant objects, such as
                      another particle or the confining walls of a half plane,
                      strip, or wedge, with various boundary conditions for the
                      order parameter. In several cases we compare the
                      interactions at large distances with the ones at close
                      distance (but still large on the molecular scale). We also
                      compare our analytical results for two Janus particles with
                      recent simulation data.},
      cin          = {IBI-5},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IBI-5-20200312},
      pnm          = {551 - Functional Macromolecules and Complexes (POF3-551)},
      pid          = {G:(DE-HGF)POF3-551},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000528535500001},
      doi          = {10.1088/1742-5468/ab7658},
      url          = {https://juser.fz-juelich.de/record/877248},
}