Hi, Does anyone know where to get low stress(less than 100MPa in tension) nonstoichiometric silicon nitride wafer? Thickness of nitride would be about 0.5 to 1 micron. Thank you for your help. mori ========================================== Kiyotaka Mori (Graduate Research Assistant) Dept.of Materials and Nuclear Engineering, BLDG.090, University of Maryland at College Park, College Park, MD 20742 Tel: 301-405-5229 Fax: 301-314-9467 E-mail: mori@eng.umd.edu =========================================