Hi all, can anyone tell me if he'd worked with either: NH4OH:H2O2:H2O(1:1:5) or H2O:H2O2:HF(20:1:1) as etchants for Titanium? What was the etch rate, and do you know of the selectivity over SiO2? Thanks a lot, Yair Gannot, Process Engineer Wolfson Microelectronics Research Center Dept. of Electrical Engineering Technion, Haifa 32000, Israel e-mail: syair@t2.technion.ac.il tel: 972-4-8293291 fax: 972-4-8322185