We are considering the use of Ta for simple coplanar electrode strips (10 microns wide and 1000 microns long) patterned on quartz wafers, or maybe on top of an LTO layer deposited on the quartz. I imagine we have to planarize to put this stuff down on the LTO, but are adhesion promoters needed? Are there any serious pitfalls to avoid in the use of this metal? All suggestions or advice will be appreciated. T.B. Jones ________________________________________________________ Thomas B. Jones Professor of Electrical Engineering University of Rochester P.O. Box 270126 Rochester, NY 14627-0126 (USA) phone: 1-585-275-5233 fax: 1-585-273-4919 email: jones@ece.rochester.edu http://www.ece.rochester.edu/~jones ________________________________________________________