Figure 3

Numerical simulations on atomic electron tomography. 1.2-Å-thick central slices of a L1₀ phase FePt nanoparticle in the XY and ZX planes, reconstructed from 27 noisy multislice STEM projections with GENFIRE (a,e), EST (b,f), SIRT (c,g), and FBP (d,h), where the z-axis is the missing wedge direction. The red arrow indicates a Pt atom and the white arrow indicates an Fe atom. Central slices in the ZX plane after applying the Fourier transform to the 3D reconstructions obtained by GENFIRE (i), EST (j), SIRT (k), and FBP (l), showing recovery of the Bragg peaks in the missing wedge direction for GENFIRE, EST and SIRT (magenta arrows). Artifacts due to missing wedge effects such as “ghost atoms” are visible in SIRT and FBP (c,d,g and h), but are not present in EST and GENFIRE (a,b,e and f).