Figure 4
From: X-ray ptychographic computed tomography at 16 nm isotropic 3D resolution

Results of the tomographic reconstuction.
(a) Section of the tomogram parallel to the rotation axis. Three distinct gray levels are visible for air (black), glass (gray) and a thin layer of Ta2O5 (white) conformal to the pores. (b) Zoom in of a region indicated by the yellow rectangle in (a). (c) Line profile indicated by a red line in (a) and (b) showing 16.4 nm edge response using the 10%–90% criteria. (d) Resolution estimation by Fourier shell correlation (FSC) computed using all 720 projections.