If you are looking into depositing gold that thick (100 um), you probably want electro-plating it, which many MEMS fabs can do. Typically silicon IC fabs do not touch gold (or they do it in a separate building) because it is a lifetime killer. I do not know about Molybdenum. Regards, Pierre x286 -----Original Message----- From: mems-talk-bounces@memsnet.org [mailto:mems-talk-bounces@memsnet.org] On Behalf Of Brad Cantos Sent: December 22, 2004 13:29 To: MEMS discussion Subject: [mems-talk] Foundry services recommendations I am looking for a foundry that can place a patterned metal of at least 100µm thickness onto a 4-inch wafer. Some options for this would be direct electroplating, or bonding patterned metal to the wafer. The pattern would be a grid of 170µm holes on 340µm pitch. Metals can be gold or molybdenum or anything with a reasonable thermal match to GaAs. Any assistance would be greatly appreciated. Brad Cantos Dir. Wafer and Die Operations Novalux, Inc. _______________________________________________ MEMS-talk@memsnet.org mailing list: to unsubscribe or change your list options, visit http://mail.mems-exchange.org/mailman/listinfo/mems-talk Hosted by the MEMS Exchange, providers of MEMS processing services. Visit us at http://www.memsnet.org/