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200 points rbanffy | 1 comments | 21 Oct 25 11:16 UTC | HN request time: 0.198s | source

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wpollock ◴[21 Oct 25 16:03 UTC] No.45657461[source]▶

> There are hurdles still to overcome. In particular, we still have to figure out a way to make the top of our diamond coatings atomically flat.

Not sure I understand this. Is this a requirement for real-world use? What happens if the outside of the coating isn't atomically flat? What makes this hard to do?

replies(4): >>45657630 #>>45659645 #>>45661043 #>>45662281 #

1. KylerAce ◴[21 Oct 25 20:11 UTC] No.45661043[source]▶

>>45657461 #

All semiconductor manufacturing techniques are based upon precisely flat layers of material that can be stacked and/or drilled into to produce a useful design. All vertical irregularities propogate to the layers above and can cause thinner layers when an upper layer is milled flat

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