Great – With PMMA there is an easy solution. You can use bilayer (PMMA 495 + PMMA 950). Spin 495 PMMA first, bake, then 950 PMMA on top. During development, the bottom dissolves faster, creating an undercut and cleaner lift-off.
Great – With PMMA there is an easy solution. You can use bilayer (PMMA 495 + PMMA 950). Spin 495 PMMA first, bake, then 950 PMMA on top. During development, the bottom dissolves faster, creating an undercut and cleaner lift-off.