Dear Mike, I agree with Daniel, but you should consider that all factors like e.g., time and power of exposure, time of the soft-baking etc. during its treatment must be suited by yourself. The data sheet from the manufacturer might be not helpful. Good luck! Karolina ---------- Wiadomość przekazana dalej ---------- From: "Daniel Figura"To: , "'General MEMS discussion'" < mems-talk@memsnet.org> Date: Tue, 9 Feb 2010 21:24:59 +0100 Subject: Re: [mems-talk] 50 nm resist Hello Mike, You may try to dilute standard positive resist with its solvent (e.g. AZ 1505 with PGMEA (AZ EBR Solvent)) to achieve such low thickness. I am not sure how good the film quality and coverage is but you may try it. Best regards, Daniel Figura