Sam Zeloof

Through autodidacticism and help from his father, Zeloof, at the age of 17, constructed a home microchip fabrication facility in his parents' garage.^[1] In 2018, he produced the first homebrew lithographically fabricated microchip, the Zeloof Z1,^[5] a PMOS dual differential amplifier chip.^[6] In 2021, he achieved a transistor count of 100 with the creation of the Zeloof Z2, a transistor array.^{[7][8][9][10]}

His work takes partial inspiration from Jeri Ellsworth's "Cooking with Jeri" which demonstrates a homebrew transistor and logic gate fabrication process.^[11] His photolithography process is currently able to create details as small as 300 nanometers.^[12]

In 2022, Zeloof along with Jim Keller started Atomic Semi, Inc. [d], a startup to manufacture small batches of affordable microchips quickly.^[13]

Zeloof also has a considerable online presence with a YouTube channel^[14] focusing on microchip and semiconductor manufacturing.

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