Microbots Built on 20-Year-Old 55nm Process Float Free After Silicon Etch

ctjlewis · x · 2026-09-28

A thread on microbot progress: all bots are patterned in parallel on a 20-year-old 55nm semiconductor process, then the silicon substrate is etched away so they float free.

Background: Kristofer Pister at Berkeley laid the foundations for microbots in the late 1990s, while Marc Miskin at Penn has made major advances in recent years.

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