Hi everybody, does anyone have any information on the differences between low-stress silicon nitride (LSN) and standard silicon nitride (STDN) ? We know about deposition conditions and residual stress but we are trying to learn about microstructure and coefficient of thermal expansion. Also, we are trying to understand crack formation during deposition and anealing. Is there any data on the maximum thickness that can be deposited ? Has anybody had any experience with the use of LSN or STDN together with polysilicon as a structural layer ? Thanks a lot, Nelsimar Vandelli (617)353-9370 Boston University Precision Engineering Research Lab 750 Commonwealth Ave. B12 Boston, MA 02215 (617)353-9370