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Sam Zeloof

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Announced
co-founded Atomic Semi, which has changed its name to Fab2 and is building a facility in Texas that mass-produces small semiconductor manufacturing plants and their internal equipment · 2026-07-06

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Jul 6

Jim Keller's Atomic Semi Rebrands as Fab2, Builds Factory That Makes Chip Fabs

Atomic Semi, the hardware startup co-founded by chip engineer Jim Keller and DIY fabricator Sam Zeloof, has changed its name to Fab2 and is building a facility in Texas that mass-produces small semiconductor manufacturing plants and their internal equipment. The company aims to produce prototype chips in hours using software-defined small fabs.