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@ARTICLE{Lewis:155847,
      author       = {Lewis, Alexander H. and Garlea, Ioana and Alvarado, José
                      and Dammone, Oliver J. and Howell, Peter D. and Majumdar,
                      Apala and Mulder, Bela M. and Lettinga, M.P. and Koenderink,
                      Gijsje H. and Aarts, Dirk G. A. L.},
      title        = {{C}olloidal liquid crystals in rectangular confinement:
                      theory and experiment},
      journal      = {Soft matter},
      volume       = {10},
      number       = {39},
      issn         = {1744-683X},
      address      = {Cambridge},
      publisher    = {Royal Society of Chemistry (RSC)},
      reportid     = {FZJ-2014-04805},
      pages        = {7865-7873},
      year         = {2014},
      abstract     = {We theoretically and experimentally study nematic liquid
                      crystal equilibria within shallow rectangular wells. We
                      model the wells within a two-dimensional Oseen–Frank
                      framework, with strong tangent anchoring, and obtain
                      explicit analytical expressions for the director fields and
                      energies of the ‘diagonal’ and ‘rotated’ solutions
                      reported in the literature. These expressions separate the
                      leading-order defect energies from the bulk distortion
                      energy for both families of solutions. The continuum
                      Oseen–Frank study is complemented by a microscopic
                      mean-field approach. We numerically minimize the mean-field
                      functional, including the effects of weak anchoring,
                      variable order and random initial conditions. In particular,
                      these simulations suggest the existence of higher-energy
                      metastable states with internal defects. We compare our
                      theoretical results to experimental director profiles,
                      obtained using two types of filamentous virus particles,
                      wild-type fd-virus and a modified stiffer variant (Y21M),
                      which display nematic ordering in rectangular chambers, as
                      found by confocal scanning laser microscopy. We combine our
                      analytical energy expressions with experimentally recorded
                      frequencies of the different equilibrium states to obtain
                      explicit estimates for the extrapolation length, defined to
                      be the ratio of the nematic elastic constant to the
                      anchoring coefficient, of the fd-virus.},
      cin          = {ICS-3},
      ddc          = {530},
      cid          = {I:(DE-Juel1)ICS-3-20110106},
      pnm          = {451 - Soft Matter Composites (POF2-451)},
      pid          = {G:(DE-HGF)POF2-451},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000344998500023},
      pubmed       = {pmid:25154421},
      doi          = {10.1039/C4SM01123F},
      url          = {https://juser.fz-juelich.de/record/155847},
}