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@ARTICLE{Kang:891848,
      author       = {Kang, Kyongok},
      title        = {{R}esponse of shear in bulk orientations of charged {DNA}
                      rods: {T}aylor- and gradient-banding},
      journal      = {Journal of physics communications},
      volume       = {5},
      number       = {4},
      issn         = {2399-6528},
      address      = {Philadelphia, PA},
      publisher    = {IOP Publishing Ltd.},
      reportid     = {FZJ-2021-01768},
      pages        = {045011 -},
      year         = {2021},
      abstract     = {Shear-induced instabilities leading to various kinds of
                      inhomogeneous flow profiles play an important role in the
                      processing of complex fluids, ranging from polymeric
                      materials to various types of biological systems. In
                      previously studied systems, either Taylor banding, or
                      gradient banding, or fracture is observed. In the present
                      work we study a system for which all instabilities occur in
                      orientation textures (OTs), and where Taylor banding occurs
                      simultaneously with gradient banding. The system here
                      consists of crowded suspensions of long and thin DNA-based
                      rods (at a low ionic strength of 0.16 mM salt), where the
                      applied shear rate is systematically varied, for
                      concentrations well below and above the glass-transition
                      concentration (12.4 mg ml−1). To simultaneously measure
                      the velocity profile along the gradient direction, in
                      fracture and gradient banding, the optical cell is placed in
                      a specially designed heterodyne light scattering set up,
                      where the scattering volume can be scanned across the cell
                      gap. The results confirm that Taylor bands and gradient
                      banding occur in the concentration of DNA rods and applied
                      shear-rates (35–80 s−1). Taylor bands clearly show the
                      flow access in vorticity-direction, while the gradient
                      banding is rearranged as thick rolling flows of OTs, at the
                      middle shear-rate (50 s−1). The observations can be then
                      useful to facilitate other biological complex fluids and the
                      glass-forming liquids.},
      cin          = {IBI-4},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IBI-4-20200312},
      pnm          = {524 - Molecular and Cellular Information Processing
                      (POF4-524)},
      pid          = {G:(DE-HGF)POF4-524},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000641855700001},
      doi          = {10.1088/2399-6528/abf6e9},
      url          = {https://juser.fz-juelich.de/record/891848},
}