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@ARTICLE{Westermeier:825139,
      author       = {Westermeier, Fabian and Pennicard, David and Hirsemann,
                      Helmut and Wagner, Ulrich H. and Rau, Christoph and
                      Graafsma, Heinz and Schall, Peter and Lettinga, M.P. and
                      Struth, Bernd},
      title        = {{C}onnecting structure, dynamics and viscosity in sheared
                      soft colloidal liquids: a medley of anisotropic
                      fluctuations},
      journal      = {Soft matter},
      volume       = {12},
      number       = {1},
      issn         = {1744-6848},
      address      = {London},
      publisher    = {Royal Soc. of Chemistry},
      reportid     = {FZJ-2016-07616},
      pages        = {171 - 180},
      year         = {2016},
      abstract     = {Structural distortion and relaxation are central to any
                      liquid flow. Their full understanding requiressimultaneous
                      probing of the mechanical as well as structural and
                      dynamical response. We provide thefirst full dynamical
                      measurement of the transient structure using combined
                      coherent X-ray scatteringand rheology on electrostatically
                      interacting colloidal fluids. We find a stress overshoot
                      during the start-upof shear which is due to the strong
                      anisotropic overstretching and compression of
                      nearest-neighbordistances. The rheological response is
                      reflected in uncorrelated entropy-driven intensity
                      fluctuations.While the structural distortion under steady
                      shear is well described by Smoluchowski theory, we find
                      anincrease of the particle dynamics beyond the trivial
                      contribution of flow. After the cessation of shear, thefull
                      fluid microstructure and dynamics are restored, both on the
                      structural relaxation timescale. We thusfind unique
                      structure-dynamics relations in liquid flow, responsible for
                      the macroscopic rheologicalbehavior of the system.},
      cin          = {ICS-3},
      ddc          = {530},
      cid          = {I:(DE-Juel1)ICS-3-20110106},
      pnm          = {551 - Functional Macromolecules and Complexes (POF3-551)},
      pid          = {G:(DE-HGF)POF3-551},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000366863800021},
      doi          = {10.1039/C5SM01707F},
      url          = {https://juser.fz-juelich.de/record/825139},
}