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@INPROCEEDINGS{Migunov:827199,
      author       = {Migunov, Vadim and Leary, Rowan K. and de la Mata, María
                      and Russo-Averchi, Eleonora and Tütüncüoglu, Gözde and
                      Morral, Anna Fontcuberta i and Arbiol, Jordi and
                      Dunin-Borkowski, Rafal},
      title        = {{E}lectron tomography with sub-5-second temporal resolution
                      for dynamic in situ transmission electron microscopy},
      address      = {Weinheim, Germany},
      publisher    = {Wiley-VCH Verlag GmbH $\&$ Co. KGaA},
      reportid     = {FZJ-2017-01397},
      pages        = {21 - 22},
      year         = {2016},
      comment      = {European Microscopy Congress 2016: Proceedings},
      booktitle     = {European Microscopy Congress 2016:
                       Proceedings},
      abstract     = {Electron tomography (ET) is an important technique for the
                      study of the three dimensional morphology, structure and
                      chemical composition of nanoscale materials in the
                      transmission electron microscope (TEM). Although ET is
                      potentially a powerful tool for in situ three-dimensional
                      TEM studies of catalytic reactions, growth processes, phase
                      transformations, switching mechanisms and defect nucleation,
                      motion and interactions, its application to dynamic
                      experiments has been limited, since typical acquisition
                      times for tilt series are typically tens of minutes or
                      longer [1].We have recently demonstrated the rapid
                      acquisition of a tomographic tilt series comprising
                      approximately 3500 images between +30° and −70° in only
                      3.5 s, as shown in Fig. 1) [2]. Here, we apply the technique
                      to the three-dimensional imaging of the thermal segregation
                      of an InAs V-shaped nanomembrane [3]. The membrane was
                      heated in situ in an FEI Titan TEM up to a temperature of
                      420 °C. Changes in membrane morphology were tracked by
                      acquiring images on a Gatan K2-IS camera at 400 frames per
                      second while continuously tilting the specimen between +60°
                      and −65°. Each tilt series (i.e., one rotation in one
                      direction) was acquired in approximately 4.3 s and comprised
                      ~1700 frames. Selected frames are shown in Figs 2 and 3.The
                      reconstruction of time-dependent (four-dimensional) tilt
                      series can be performed using two approaches: i)
                      Reconstruction of each individual tilt series and
                      interpolation between each reconstruction in the time
                      domain, resulting in a time resolution that is limited by
                      the acquisition time for each tilt series (i.e., 4.3 s); ii)
                      Model-based reconstruction, involving tracking of changes
                      between individual frames within each tilt series, resulting
                      in sub-second temporal resolution. We are presently pursuing
                      both approaches.We are grateful to Cory Czarnik and Ana
                      Pakzad from Gatan Inc. for making the K2 IS camera available
                      for the experiments and to the European Research Council for
                      an Advanced Grant.},
      month         = {Aug},
      date          = {2016-08-28},
      organization  = {16th European Microscopy Congress (EMC
                       2016), Lyon (France), 28 Aug 2016 - 2
                       Sep 2016},
      cin          = {PGI-5 / ER-C-1},
      cid          = {I:(DE-Juel1)PGI-5-20110106 / I:(DE-Juel1)ER-C-1-20170209},
      pnm          = {143 - Controlling Configuration-Based Phenomena (POF3-143)},
      pid          = {G:(DE-HGF)POF3-143},
      typ          = {PUB:(DE-HGF)8 / PUB:(DE-HGF)7},
      doi          = {10.1002/9783527808465.EMC2016.6191},
      url          = {https://juser.fz-juelich.de/record/827199},
}