I'm a student of Texas A&M University. As far as I know, gold doesn't attach to pyrex glass directly. But I think if I use sputtering machine then it might be possible. Anybody tried to attach gold directly onto pyrex wafer? One more question. Is there platinum sputtering source exist? If so, how much is it? Please answer me the question. I appreciate your any reply. Thanks, sokwon Paik __________________________________________________ Do you Yahoo!? The New Yahoo! Search - Faster. Easier. Bingo http://search.yahoo.com