Wave-optical Properties and Spatial Resolution in Point-projection Microscopy and Holography
- PC Online Talk
- Date: Sep 24, 2020
- Time: 11:00 AM (Local Time Germany)
- Speaker: Dr. Faruk Krecinic
- FHI Department PC
Early publications claimed it would be possible to achieve atomic scale
resolution with this technique, but so far the best reported spatial
resolution is 7-8 Å. The lack of atomic resolution was mainly attributed
to environmental disturbances, i.e. mechanical vibrations. However,
using a semi-classical model we show that there are inherent resolution
limits due to the combined effect of the finite spatial coherence length
of the emitted electrons and electron-optical aberrations. The
semi-classical model introduced here provides a general framework for
simulating the wave-optical properties of (photo)electron sources used
in electron microscopy, and evaluating the effect of the spatial
coherence length, source geometry and aberrations on the emitted
 T. Latychevskaia, et al., Nano Letters, 16(9), 5469–5474, (2016).
 M. Müller, et al., Nat. Comm., 5, 5292 (2014).
 F. Krečinić, et al., arXiv:1803.01766, (2018).
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