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Ptychographic Tomography​

  • Traditional STEM electron tomography techniques use inelastically-scattered electrons (HAADF)
    • Easy to interpret, Z-contrast
  • "Serial" ptychographic tomography instead uses ptychographic reconstructions for the 2D projections
    • More dose efficient, sensitive to light atoms
  • "Joint" ptychographic tomography takes this a step further, reconstructing the 3D volume directly
    • Relaxed probe overlap requirements, effective missing-wedge regularization
Serial ptychographic tomography
P Pelz et al., arXiv:2206.08958 (2022)