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Moore's Law Continues
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coppice:

--- Quote from: TimFox on November 01, 2023, 01:22:13 am ---As I stated in my post, I was referring to the Scanning Transmission Electron Microscope, which pre-dates the tunneling microscope (developed in 1981).
It is an example of how fine a focus could be achieved with a 100 keV electron beam over 50 years ago.

--- End quote ---
The scanning transmission microscopes are usually called SEMs - just scanning electron microscope, because transmission came first - and the tunnelling ones add the T, so STEM.
EPAIII:
Probably already being done or I am just naive, but couldn't multiple beams write to different areas at the same time? Just keep them far apart enough so there are no bad effects. A 10 x 10 array of beams could decrease the time needed by a factor of 100.
TimFox:

--- Quote from: coppice on November 01, 2023, 01:21:04 pm ---
--- Quote from: TimFox on November 01, 2023, 01:22:13 am ---As I stated in my post, I was referring to the Scanning Transmission Electron Microscope, which pre-dates the tunneling microscope (developed in 1981).
It is an example of how fine a focus could be achieved with a 100 keV electron beam over 50 years ago.

--- End quote ---
The scanning transmission microscopes are usually called SEMs - just scanning electron microscope, because transmission came first - and the tunnelling ones add the T, so STEM.

--- End quote ---

No.  "SEMs" are scanning electron microscopes, which usually generate the image of a surface by secondary electron emission.
The first electron microscopes were "TEMs" for "transmission electron microscope", where electrons passing through the target were focused by an objective lens onto a photographic film. 
Scanning Transmission Electron Microscopes were developed thereafter, but achieved good results around 1970.  https://en.wikipedia.org/wiki/Scanning_transmission_electron_microscopy  for a comparison and history.
The resolution with the scanned beam was well below 1 nm.
The scanning tunneling microscope (STM), which is really cool (Nobel Prize 1986), is completely different:  see  https://www.testandmeasurementtips.com/basics-of-the-scanning-electron-microscope/
mawyatt:
https://www.edn.com/will-1-4-nm-help-samsung-catch-up-with-tsmc-ifs/?utm_source=newsletter&utm_campaign=link&utm_medium=EDNWeekly-20231109&oly_enc_id=9452I8903823C7T

Apple's new M3 chip sets is in TSMC 3nm process with 25 billion transistors!

https://www.apple.com/newsroom/2023/10/apple-unveils-m3-m3-pro-and-m3-max-the-most-advanced-chips-for-a-personal-computer/

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