The electron beam exposure characteristics of two new Shipley DUV photoresists, UVIII and UVN have been investigated. UVIII is a positive resist which gives good linewidth control down to 100 nm lines and spaces with 60 nm features being possible at a dose of 40 mu C/cm(2) and a beam voltage of 50 kV. UVN is a negative resist with a sensitivity of 20 mu C/cm(2) at 50 kV which gives much poorer dimensional control and has an ultimate resolution of 70 nm isolated lines or 140 nm lines and spaces.