Sam Zeloof also created his own transistors, then founded AtomicSemi/fab2: https://youtube.com/watch?v=IS5ycm7VfXg

inspired by Jeri Ellsworth, who also documented hers on Youtube: https://youtube.com/playlist?list=PL5DCEA197C1C07A2D

Saw Jeri demo some of her early transistors, it was one of the most inspiring things seen in a hackerspace… 15 years ago now? Sheesh. Glad to see AtomicSemi/fab2 in existence, that is a relief. We simply have to get desk-side fabrication happening, faster, imho ..