Reading questions like this one "How much does it cost to have a custom ASIC made?", I was wondering if there's some sort of equivalent to additive manufacturing that would lower the cost to getting prototype chips made. For example, can you "write" a chip with an electron beam or something? Carve it out with an AFM?
If not then why not, and who's working on this?
What if we restrict ourselves to analog chips / large geometries, are there any methods that then become feasible?