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A comment on Atomic resolution video of salt crystals forming in real time.

Re:Atomic resolution video of salt crystals forming in real ... by amelius on Thursday October 07, 2021 @09:27AM (#28785946)
How could they tell from the video which atoms were Na and which were Cl?
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Re:Atomic resolution video of salt crystals forming in real ... by rsfern on Friday October 08, 2021 @03:09AM (#28796523)
I think it’s a combination of atomic radius and Z contrast (heavier atoms show differently from lighter ones in the TEM). It also helps that the crystal structure is known

They also describe some comparison to forward modeling in the methods section, which is cool

https://pubs.acs.org/doi/suppl/10.1021/jacs.0c12100/suppl_fi...

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