Hello, I plan to deposit Aluminium fingers on quartz wafers to make reflection gratings. I also need to limit the aperture size. For this purpose I need to deposit another layer such that 1. it attaches both to quartz and to aluminium 2. it does not reflect light I was wondering what kind of material/process I can use. Any refernce in this regard? Thanks, Ali ------------------------- Ali Razavi, Ph.D. Room 455, Manufacturing Research Center Gerogia Institute of Technology, Atlanta, GA 30332-0405 Phone: 678-637-1634, Fax: 404-894-9342 E-mail: arazavi@pmrc.marc.gatech.edu