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@ARTICLE{Bochenek:909144,
      author       = {Bochenek, Steffen and Camerin, Fabrizio and Zaccarelli,
                      Emanuela and Maestro, Armando and Schmidt, Maximilian and
                      Richtering, Walter and Scotti, Andrea},
      title        = {{I}n-situ study of the impact of temperature and
                      architecture on the interfacial structure of microgels},
      journal      = {Nature Communications},
      volume       = {13},
      number       = {1},
      issn         = {2041-1723},
      address      = {[London]},
      publisher    = {Nature Publishing Group UK},
      reportid     = {FZJ-2022-03030},
      pages        = {3744},
      year         = {2022},
      abstract     = {The structural characterization of microgels at interfaces
                      is fundamental to understand both their 2D phase behavior
                      and their role as stabilizers that enable emulsions to be
                      broken on demand. However, this characterization is usually
                      limited by available experimental techniques, which do not
                      allow a direct investigation at interfaces. To overcome this
                      difficulty, here we employ neutron reflectometry, which
                      allows us to probe the structure and responsiveness of the
                      microgels in-situ at the air-water interface. We investigate
                      two types of microgels with different cross-link density,
                      thus having different softness and deformability, both below
                      and above their volume phase transition temperature, by
                      combining experiments with computer simulations of in silico
                      synthesized microgels. We find that temperature only affects
                      the portion of microgels in water, while the strongest
                      effect of the microgels softness is observed in their
                      ability to protrude into the air. In particular, standard
                      microgels have an apparent contact angle of few degrees,
                      while ultra-low cross-linked microgels form a flat polymeric
                      layer with zero contact angle. Altogether, this study
                      provides an in-depth microscopic description of how
                      different microgel architectures affect their arrangements
                      at interfaces, and will be the foundation for a better
                      understanding of their phase behavior and assembly.},
      cin          = {JCNS-FRM-II / MLZ},
      ddc          = {500},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 / I:(DE-588b)4597118-3},
      pnm          = {6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ)
                      (POF4-6G4) / 632 - Materials – Quantum, Complex and
                      Functional Materials (POF4-632)},
      pid          = {G:(DE-HGF)POF4-6G4 / G:(DE-HGF)POF4-632},
      experiment   = {EXP:(DE-MLZ)KWS2-20140101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {35768399},
      UT           = {WOS:000830675000012},
      doi          = {10.1038/s41467-022-31209-3},
      url          = {https://juser.fz-juelich.de/record/909144},
}