Fig. 5. Summary of the Bragg ptychography performances.

The graph synthesizes the gain on the image quality (spatial resolution along the vertical direction, in nm) obtained in this study as a function of the performances of the setup (positioning errors, in nm) when one introduces a position retrieval routine in the inversion scheme. With a 3^rd-generation synchrotron source, the gain is limited and the experimental approach only performs well with a reliable sample scanner. On the contrary, with the coherent flux available at the 4^th-generation synchrotron source, a high (almost maximal) quality image can be retrieved even for non-perfect scanning performances. The illustrations correspond to the density distributions presented in the main text and in Supplementary information