1. Department of Materials Science and Engineering
2. Yonsei University
3. Seoul 120-749, Republic of Korea
4. Advanced Manufacturing Systems Research Division
5. Korea Institute of Machinery and Materials (KIMM)
6. Daejeon 305-343, Republic of Korea
7. Device Materials Research Center
8. Korea Research Institute of Chemical Technology (KRICT)
9. Daejeon 305-600, Republic of Korea