Comments by "Anders Juel Jensen" (@andersjjensen) on "Can You Do 7nm Chips Without EUV?" video.

  1. STANDING OVATION! Absolutely stellar episode! And 10 thumbs up for the use of applicable meme material! :D
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  2. "Yes. But not at prices and yields that are acceptable".
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  3. X-rays are notoriously hard to reflect as they penetrate most things. Also I've been told that creating a photo-resist compound for x-ray lithography is pretty hard. Not because it's hard to find a material that crumbles when exposed to x-rays, but be cause it's hard to find a material that crumbles, but doesn't let x-rays through to destroy the previously made features.
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  4. They did manage to tune the voltage/frequency response into the absurd though.. And I bet they had ungodly good yields on their last batches.
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  5. In computing the only meaningful benchmark is the passing of time for a workload as it pertains to your particular needs. AKA: Synthetic benchmarks are useless. Only application benchmarks with datasets similar to your own makes sense.
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  6.  @CaptivaLP  I'm not aware of medical equipment that reflects x-rays. It's generally "straight through". Even EUV is hard to reflect. The mirrors absorb quite a lot which causes throughput problems. DUV machines easily runs 300 wafers per hour whereas EUV machines are down to 150 at best. As for heavy metal based photoresist: I'm not a chemist, but I know that photo resist either needs to "crumble" or "cure", when exposed to the light source, depending on whether they're doing positive or negative reticles. Just applying a layer of, say, mercury, is not going to accomplish any of those. It's just going to block some of the x-rays. But if a chemical compound containing heavy metals can be found there's still a lot of other considerations, like how to dissolve the cured parts (or the crumbled parts) without dissolving chip features too, and how to reclaim the heavy metals so they don't end up in the sewer, and how to apply the photo resist in a perfectly even manner (These days that's done with vapour deposition. Don't know if it's a good or bad idea to turn heavy metals into vapour...).
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  7. Hello!
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