- Semiconductor nanostructures and nanodevices
- Low-dimensional nanomaterials and quantum phenomena

1997.10-1999.6 Post doc., Oak Ridge National Laboratory (USA)
1999.7-2009.2 Professor (Assistant, Associate), POSTECH
2009.3~ Professor (Associate, full), Seoul National University

2004.4 Chong Yul Lee Young Distinguished Professor
2006.2 Song-gok prize for science and technology
2007.12 2007 Year’s POSTECHIAN Award