It wouldn't work with either surface. Need another metal before (thin titanium for example). Ivan Shubin, Project Scientist University of California, San Diego ECE Department, EBU-1, Rm. 4809 La Jolla, CA 92093 ph. 858-822-3253 fax 858-534-6570 -----Original Message----- From: Joseph Grogan [mailto:jgrogan@seas.upenn.edu] Sent: Wednesday, May 23, 2007 9:56 AM To: General MEMS discussion Subject: [mems-talk] evaporated zinc Hi all, I was wondering if anyone has ever evaporated zinc onto silicon or silicon nitride and could tell me whether the adhesion is good or bad. I would simply try it out, but I don't have any zinc and I don't want to waste time and money buying some to explore this if the adhesion is known to be bad. thanks, Joe Grogan