uijoon Yoon received his BS (1983) and MS (1985) from Seoul National University, Korea, and PhD from MIT, USA (1990) in Electronic Materials. After Postdoctoral Member of Technical Staff at AT&T Bell Laboratories, Murray Hill, NJ, USA, he joined the Department of Materials Science and Engineering, SNU, Korea in 1992. He worked for the Office of Strategic R&D Planning, Ministry of Trade, Industry, and Energy, Korea as Managing Director from 2013 to 2017. As Dean for Research Affairs and Director of SNU R&DB Foundation, SNU, from 2019 to 2021, he worked for SNU in the field of research administration, technology transfer, and startup acceleration. He is the inventor of sapphire nano-membrane technology and is interested in the sapphire nano-membranes for discrete micro-LED for affordable large-area display fabrication. In 2020 he became Founding President of Korea Institute of Energy Technology (KENTECH), where he focuses on the undergraduate education reform in favor of inquiry-based learning and the innovative graduate research in energy sectors such as AI for energy; energy materials and devices; grid modernization; hydrogen energy; and environmental, climate technology; and nuclear fusion to cope with carbon neutrality in 2050. He is a member of the National Academy of Engineering of Korea.