Ptychography can be realized with various waves including light, electrons, X-rays, terahertz and other waves. Due to absence of optical elements and aberrations, ptychography delivers unprecedented high resolution of reconstructed sample structure. Electron ptychography applied for imaging two-dimensional materials currently holds the world-wide resolution record of 0.4 Å [1]. In this talk, I will present the principles of ptychography and overview its applications.
[1] Y. Jiang et al., "Electron ptychography of 2D materials to deep sub-ångström resolution," Nature 559, 343–349 (2018)
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