Figure 3
From: Atomic Resolution Defocused Electron Ptychography at Low Dose with a Fast, Direct Electron Detector
Comparison between phase reconstructions and the HAADF image. (a–c) Phases of ptychographic reconstructions from the same region with doses of 1.57 × 105, 2.75 × 103 and 4.03 × 102 e−/Å2; (d) HAADF image of monolayer MoS2 recorded with a dose of 3 × 103 e−/Å2. The top-right images inset in (a–d) are the corresponding experimental unit-cell averaged results, respectively. The 1 nm and 1 Å scale bars apply to (a–d) and their corresponding insets, respectively. (e–h) Power spectra of (a–d) respectively displayed on a logarithmic intensity scale. Circles indicated (210), (200) and (110) reflections of the MoS2 lattice corresponding to spacings of 1.03 Å, 1.36 Å and 1.58 Å.
