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- 1988 – Univ. of California, LosAngeles (Ph. D – Material Science & Engineering)
- 1981 – Seoul National Univ. (M. S. – Mineral Engineering)
- 1979 – Seoul National Univ. (B. S. – Mineral Engineering)
- 2008 – 2012: Department Chair, MSE, POSTECH
- 2001.03 – present : Professor, POSTECH
- 1995.01 – 2001.03 : Associate Professor, POSTECH
- 1991.08 – 1995.01 : Assistant Professor, POSTECH
- 1989.01 – 1991.07 : Research Assistant Professor, Rutgers University
- Fiber Amplifier and Laser
- Glasses for Display
- Nano Materials
- Optical Memories
- Environment Materials