Enhanced resolution for future fabrication

We have developed resolution-enhanced optical lithography processes that have enabled us to fabricate devices with deep sub-100 nm feature sizes. Isolated gate features were resolved down to 40 nm in resist using optimized phase-shift lithography processes. The addition of a small reactive ion etch (RIE) etch bias allowed us to fabricate transistors with gate lengths in the range 9-25 nm. This was...