Influence of the illumination coherency and illumination aperture on the ptychographic iterative microscopy
*
Liu Cheng
a),
b)†
, Zhu Jian-Qiang
a)
, John Rodenburg
b)
Reconstructed phase images for electron gun width of 0 Å (a), 2.2 Å (b), and 2.6 Å (c) when the numerical aperture is12 mrads.