this post was submitted on 07 Jun 2024
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When I learned about how they are making the new CPUs it blew my mind. Dropping a microscopic droplet of metal and blasting it with lasers to a stencil like thingy to create the nanometer circuitry. I was like how the fuck did you even thought about doing that?.. Technologies like these are really marvelous.
You start with macroscopic photolithography, add material science of semiconductors and then iterate a million times. It didn't start at nanoscale.
Exactly, and “we need this as small and precise as possible” means “can lasers do it?” As an engineer I default to fast and precise means computer guided laser if possible
They use electron beams and extreme UV light nowadays. Lasers are not necessarily the best light source, even at other wavelengths.