Fig. 4

Comparison of the CPU/GPU implementations of the PRISM and multislice algorithms described in this work. A 100 × 100 × 100 Å amorphous carbon cell was divided slices of varying thickness and sampled with progressively smaller pixels in real space corresponding to digitized probes of array size 256 × 256, 512 × 512, 1024 × 1024, and 2048 × 2048, respectively. Two different PRISM simulations are shown, a more accurate case where the interpolation factor \(f=4\) (left), and a faster case with \(f=16\) (right). The multislice simulation is the same for both columns. Power laws were fit of the form \(A + B \, {q_\mathrm{{max}}}^n\) where possible. The asymptotic power laws for higher scattering angles are shown on the right of each curve