- Design & Manufacturing
- Appropriate Technology
- Smart Materials

2013-2014 University of Washington (Seattle) Department of Mechanical Engineering, Visiting Scholar
2013-2021 International Journal of Precision Engineering and Manufacturing-Green Technology, Editor-in-Chief
2015-2017 Seoul National University, Social Responsibility, Director of Center
2015-2017 University Industrial Technology Force (UNITEF), President
2017-2018 Seoul National University, Graduate School of Engineering Practice, Associate Dean
2019-present HYUNDAI WIA, Board Director
2021-present Academic Society for Appropriate Technology, President
2021-present Seoul National University, Department of Mechanical Engineering, Department Chair
2022-present Korean Society for Precision Engineering, Vice-President
2003-present Seoul National University, Department of Mechanical Engineering, Assistant/Associate/Full Professor

2021 Associate Member, The National Academy of Enginnering of Korea
2019 Fellow, CIRP (The International Academy for Production Engineers)
2018 Commendation of President, Republic of Korea