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@ARTICLE{Jo:627113,
      author       = {Jo, Wonhyuk and Möller, Johannes and Hallmann, Jörg and
                      Wrigley, James and Pudell, Jan-Etienne and Boesenberg,
                      Ulrike and Brausse, Felix and Rodriguez-Fernandez, Angel and
                      Zozulya, Alexey and Shayduk, Roman and Madsen, Anders},
      title        = {{MH}z {X}-ray photon correlation spectroscopy using an
                      acoustic levitator at the {E}uropean {XFEL}},
      journal      = {Journal of synchrotron radiation},
      volume       = {32},
      number       = {3},
      issn         = {0909-0495},
      address      = {Chester},
      publisher    = {IUCr},
      reportid     = {PUBDB-2025-01545},
      pages        = {669 - 677},
      year         = {2025},
      abstract     = {The structural and dynamical properties of soft-matter
                      systems play an important role in crystallization and
                      nucleation theory. Despite their significance, the dynamical
                      properties are still poorly understood because of
                      experimental constraints and the requirement of performing
                      measurements with high spatial and temporal resolution.
                      Here, we demonstrate MHz X-ray photon correlation
                      spectroscopy (XPCS) using a contactless sample holder at the
                      European X-ray Free-Electron Laser. A millimetre-sized
                      liquid sample droplet was levitated in air via acoustic
                      waves with the solvent slowly evaporating. A colloidal
                      suspension of silica nanospheres was used to track the
                      structural evolutions using small-angle X-ray scattering,
                      and the dynamical information was captured by time-resolved
                      MHz XPCS as a function of evaporation time. This study
                      outlines a new path towards the investigation of metastable
                      structure and dynamics using X-ray speckle techniques, for
                      instance, XPCS, X-ray speckle visibility spectroscopy and
                      X-ray cross-correlation analysis.},
      cin          = {$XFEL_E1_MID$},
      ddc          = {550},
      cid          = {$I:(DE-H253)XFEL_E1_MID-20210408$},
      pnm          = {6G13 - Accelerator of European XFEL (POF4-6G13)},
      pid          = {G:(DE-HGF)POF4-6G13},
      experiment   = {EXP:(DE-H253)XFEL-MID-20150101 /
                      EXP:(DE-H253)P-P10-20150101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {40278848},
      UT           = {WOS:001486450700016},
      doi          = {10.1107/S1600577525002875},
      url          = {https://bib-pubdb1.desy.de/record/627113},
}