Hello Anirban, you can check AZ 9260 data sheet http://www.az-em.com/pdfs/9200/az_9260_photoresist.pdf there is 24 um process well described. From my experience, if you use mask aligner exposure check if you are in good contact to have good structures profile. Important thing is to let the resist re-hydrate after soft bake for some time and also use spray development to develop the patterns. If you have any particular problem with process let us know. Best regards, Daniel Figura smartfabgroup process consulting - data processing - fab software Phone: +44 20 3286 4342 E-mail: daniel.figura@smartfabgroup.com, Web: www.smartfabgroup.com -----Original Message----- From: mems-talk-bounces@memsnet.org [mailto:mems-talk-bounces@memsnet.org] On Behalf Of ANIRBAN SARKAR Sent: Friday, February 05, 2010 7:41 AM To: General MEMS discussion Subject: [mems-talk] AZ 9260 processing Hi all, I need some suggestions for the following fabrication objective: Using AZ 9260 positive resist, I would like to achieve thickness for ~ 20 um and the smallest feature size is 10um. I am facing some problems in the soft bake, exposure dose and development of the patterns. I would be obliged if I can get some recipe that I could use as a reference. Thanking you in anticipation, Anirban