Gary, Thanks for your mail. Do you have any more information on TiN, i.e. sheet resistance, which thickness, grade of N, correct stochiometry etc? Regards, Steven. -----Original Message----- From: Gary Subject: RE: [mems-talk] Diffusion barrier for Ga into Au Try TiN, it is normally reactively sputtered and to be effective the stochiometry must be "right on". Gary