% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@INPROCEEDINGS{Lettinga:133529,
      author       = {Lettinga, Pavlik and Holmqvist, Peter and Kleshchanok, D.
                      and Ballesta, Pierre and Rogers, S.A. and Kohlbrecher, J.
                      and Struth, B.},
      title        = {{I}n situ large amplitude oscillatory shear ({LAOS})
                      experiments on rod-like viruses and colloidal platelets},
      school       = {TU Berlin},
      reportid     = {FZJ-2013-01963},
      year         = {2012},
      abstract     = {Highly anisotropic particles are by nature susceptible to
                      external fields. In particular shear forces can cause a
                      pronounced shear thinning, where a highly viscous unordered
                      system is sheared into a low viscous ordered system. This
                      makes shear thinning behavior both fundamentally and
                      practically interesting. The rheological and structural
                      responses of the system at the onset of shear thinning can
                      be conveniently studied by large amplitude oscillatory shear
                      (LAOS) in combination with in situ scattering techniques.
                      Here we study two systems: 1) dispersions of rod-like (fd)
                      viruses approaching the isotropic - nematic transition in
                      combination with time-resolved small-angle neutron
                      scattering; 2) dispersions of gibbsite platelets around the
                      nematic phase in combination with time-resolved small-angle
                      X-ray scattering. Viewing the responses as indicating a
                      sequence of physical processes, we identify, for the
                      rod-dispersions, a region of purely elastic response
                      accompanied by an increase in the orientational ordering. By
                      yielding this is followed in sequence by a region of
                      fluid-like behavior at an almost constant ordering. The
                      platelet dispersions display, for a broad range of
                      frequencies, a transition from singlet feature in the
                      scattering at small strain amplitude to a doublet at large
                      strain amplitude. This suggests the existence of a critical
                      strain for reorienting the platelets, which is not reflected
                      in the bulk rheology.},
      month         = {Mar},
      date          = {2012-03-25},
      organization  = {76th Annual Meeting of the DPG and DPG
                       Spring Meeting, Berlin (Germany), 25
                       Mar 2012 - 30 Mar 2012},
      subtyp        = {Other},
      cin          = {ICS-3},
      cid          = {I:(DE-Juel1)ICS-3-20110106},
      pnm          = {451 - Soft Matter Composites (POF2-451)},
      pid          = {G:(DE-HGF)POF2-451},
      typ          = {PUB:(DE-HGF)6},
      url          = {https://juser.fz-juelich.de/record/133529},
}