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@ARTICLE{Kuklin:873722,
      author       = {Kuklin, Alexander and Zabelskii, Dmitrii and Gordeliy, Ivan
                      and Teixeira, José and Brûlet, Annie and Chupin, Vladimir
                      and Cherezov, Vadim and Gordeliy, Valentin},
      title        = {{O}n the {O}rigin of the {A}nomalous {B}ehavior of {L}ipid
                      {M}embrane {P}roperties in the {V}icinity of the
                      {C}hain-{M}elting {P}hase {T}ransition},
      journal      = {Scientific reports},
      volume       = {10},
      number       = {1},
      issn         = {2045-2322},
      address      = {[London]},
      publisher    = {Macmillan Publishers Limited, part of Springer Nature},
      reportid     = {FZJ-2020-00943},
      pages        = {5749},
      year         = {2020},
      abstract     = {Biomembranes are key objects of numerous studies in biology
                      and biophysics of great importance to medicine. A few
                      nanometers thin quasi two-dimensional liquid crystalline
                      membranes with bending rigidity of a few kT exhibit unusual
                      properties and they are the focus of theoretical and
                      experimental physics. The first order chain-melting phase
                      transition of lipid membranes is observed to be accompanied
                      by a pseudocritical behavior of membrane physical-chemical
                      properties. However, the investigation of the nature of the
                      anomalous swelling of a stack of lipid membranes in the
                      vicinity of the transition by different groups led to
                      conflicting conclusions about the level of critical density
                      fluctuations and their impact on the membrane softening.
                      Correspondingly, conclusions about the contribution of
                      Helfrich’s undulations to the effect of swelling were
                      different. In our work we present a comprehensive
                      complementary neutron small-angle and spin-echo study
                      directly showing the presence of significant critical
                      fluctuations in the vicinity of the transition which induce
                      membrane softening. However, contrary to the existing
                      paradigm, we demonstrate that the increased undulation
                      forces cannot explain the anomalous swelling. We suggest
                      that the observed effect is instead determined by the
                      dominating increase of short-range entropic repulsion.},
      cin          = {IBI-7},
      ddc          = {600},
      cid          = {I:(DE-Juel1)IBI-7-20200312},
      pnm          = {551 - Functional Macromolecules and Complexes (POF3-551)},
      pid          = {G:(DE-HGF)POF3-551},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:32238845},
      UT           = {WOS:000563459800011},
      doi          = {10.1038/s41598-020-62577-9},
      url          = {https://juser.fz-juelich.de/record/873722},
}