Extended Data Fig. 5: Comparison between ptychography techniques and low-angle ADF imaging of graphene. | Nature

Extended Data Fig. 5: Comparison between ptychography techniques and low-angle ADF imaging of graphene.

From: Electron ptychography of 2D materials to deep sub-ångström resolution

Extended Data Fig. 5

a, b, Ptychographic reconstructions of simulated data with an in-focused probe, using the WDD (a) and ePIE (b) methods. c, Low-angle ADF (integrating from 1α to 4α) reconstruction using the same simulated datasets. Both ptychographic methods show similar reconstructions and are about 10 times more dose-efficient than the low-angle ADF technique. Beam energy, 80 keV; aperture size (α), 21.4 mrad.