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@MISC{Strauch:897405,
      author       = {Strauch, Achim and Weber, Dieter and Clausen, Alexander and
                      Müller-Caspary, Knut},
      title        = {{S}ynthetic 4{D} {STEM} dataset based on a {S}r{T}i{O}3
                      supercell with two additional artificial spatial
                      frequencies},
      reportid     = {FZJ-2021-03771},
      year         = {2021},
      abstract     = {<p>This dataset allows to investigate phase contrast
                      methods for 4D scanning transmission electron microscopy,
                      such as ptychography.</p> <p>A synthetic dataset has been
                      simulated, based on an SrTiO<sub>3</sub> unit cell as a
                      starting point. Then, a five by five super cell was created
                      by repetition. Two artificial spatial frequencies were added
                      to the phase grating, one with a wavelength of a single unit
                      cell and one with a wavelength of the super cell. To
                      eliminate dynamical scattering, a 4D-STEM simulation with 20
                      $\&times;$ 20 $scan\&nbsp;points$ per unit cell was
                      performed using only one slice with a thickness of one unit
                      cell along electron beam direction [001].</p>
                      <p><strong>Files</strong></p> <ul>
                      $<li><em>conf_01.mat</em>:$ HDF5 file with the phase
                      grating.</li> <li><em>Data extraction and plot of the phase
                      grating.ipynb</em>: Jupyter notebook showing how to access
                      the phase grating file and plot $the\&nbsp;data.</li>$
                      $<li><em>slice_00001_thick_1.9525_nm_blocksz100.raw</em>:$
                      Simulated 4D STEM dataset as a raw binary file. Shape 100 x
                      100 x 596 x 596, dtype float32.</li>
                      <li><em>ssb-example.ipynb</em>: Jupyter notebook showing
                      first moment analysis and ptychography with the
                      dataset.</li> </ul> <p><strong>Simulation
                      parameters</strong></p> <ul> <li>Scan points: 100x100</li>
                      <li>Field of view: 1.9525nm</li> <li>Convergence angle:
                      $23mrad,\&nbsp;136$ px</li> <li>Acceleration voltage: 300
                      kV</li> <li>Center: (297, 297)</li> <li>Rotation angle:
                      $0\&deg;</li>$ </ul>},
      cin          = {ER-C-1},
      cid          = {I:(DE-Juel1)ER-C-1-20170209},
      pnm          = {5351 - Platform for Correlative, In Situ and Operando
                      Characterization (POF4-535) / moreSTEM - Momentum-resolved
                      Scanning Transmission Electron Microscopy (VH-NG-1317) /
                      Ptychography 4.0 - Proposal for a pilot project "Information
                      $\&$ Data Science" (ZT-I-0025)},
      pid          = {G:(DE-HGF)POF4-5351 / G:(DE-HGF)VH-NG-1317 /
                      G:(DE-HGF)ZT-I-0025},
      typ          = {PUB:(DE-HGF)33},
      doi          = {10.5281/ZENODO.5113235},
      url          = {https://juser.fz-juelich.de/record/897405},
}