"Probing Valence Electron and Hydrogen Dynamics Using Charge-Pair Imaging with Ultrafast Electron Diffraction" https://doi.org/10.1103/kny2-gf5x
"seeing" (hydrogen) bonds is something I show our students with AFM/SEM as part of an introduction into protein structure and why x-ray diffraction and cryoEM are so important technologies.
The cryoEM is particularly interesting, because it can also. under the right conditions, capture conformational changes of proteins.
And now electron movement
