Greetings, I don't believe there is a UV problem. We developed finger print ID devices that had a final coating of SU8 ,we found no degradation during testing to my knowledge. Regards walter www.elume.com -----Original Message----- From: Michael L [mailto:l_473@hotmail.com] Sent: Tuesday, August 02, 2005 1:35 AM To: mems-talk@memsnet.org Subject: [mems-talk] SU-8 UV degradation Hi, Does anyone know if SU-8 undergoes UV degradation during prolonged exposure after crosslinking? Polymers generally exhibit such an effect but the same may not be true for epoxy class polymers. Any information would be appreciated.