Dear MEMS COMMUNITY, This is Jungsik Kim in the University of Birmingham. I have been used GTA(Thermogravimetric analysis) for SU-8 under Nitrogen atmosphere and ambient air conditions. Under N-gas, nearly 20% mass of SU-8(mostly Carbon) remained, but under air with Oxygen, almost all of them were burned out. Therefore, I'm searching for help. Has anyone knows chemical composition of SU-8? If yes, please let me know that. Best wishes, Jungsik Kim ========================================= Mr. Jung-Sik, Kim School of Manufacturing and Mechanical Engineering The University of Birmingham Edgbaston, Birmingham B15 2TT Tel: 44 (0)121 414 4245 Fax: 44 (0)121 414 3958 =========================================