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Yes, of course the etching on silicon process has been refined to a level nobody thought possible. But this is more like a CNC process at a tiny level. What we
by abraxas 8mo ago
Yes, of course the etching on silicon process has been refined to a level nobody thought possible. But this is more like a CNC process at a tiny level. What we don't have is additive manufacturing at nano scale. The nano assembler that Drexler and Feynman thought were possible is not panning out.
- KK7NIL 8mo agoI'll have to look up that idea of the "nano assembler" that you're referring, but I'll just mention that there is significant additive manufacturing in a modern semiconductor GAAFET node, with the entire transistor being grown. This video is a good summary of the main steps involved: https://youtu.be/xaKyDrWfHes https://youtu.be/xaKyDrWfHes It's certainly not as powerful or universal as 3D printing and it might not even be "additive manufacturing" proper, but it is a lot more than just etching/subtractive manufacturing.