Diamond Foundry grows a 200mm single-crystal diamond aimed at AI chip heat
Diamond Foundry CEO Martin Roscheisen announced the unpolished crystal on November 5th, after scientists Stefan Gsell and Martin Fischer spent 25 years working on diamond growth.
By RuntimeWire Staff · Published
Primary source: Tom's Hardware
Why it matters
AI processors are running into heat limits that better fans and liquid loops cannot fully solve, because the heat is concentrated in tiny hotspots on the chip itself. A wafer-scale single-crystal diamond substrate would let chipmakers spread that heat inside the package, using a material Diamond Foundry rates far ahead of copper on thermal conductivity.
Diamond Foundry CEO and co-founder Martin Roscheisen has spent the past 13 years trying to turn diamond from a gemstone business into a semiconductor materials business. Diamond Foundry said in a post dated November 5th, 2026 that it had created a single crystal of diamond measuring 200mm across, grown as one continuous piece.…
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