Professor Youho Lee of Seoul National University's Department of Nuclear Engineering Named to ANS '40 Under 40'
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Professor Youho Lee Lee from the Department of Nuclear Engineering at Seoul National University has been named to the American Nuclear Society (ANS) 40 Under 40 list, an honor that recognizes outstanding professionals under the age of 40.
Among experts across academia, research, industry, and government sectors, Professor Lee is the only individual selected from an institution outside the United States.

ANS cited the following key reasons for his selection:
- The internationally influential research program led by Professor Lee’s Nuclear Fuel Materials and Safety Laboratory,
- The innovative research in accident-tolerant fuels (ATF) with chromium coatings, as well as the integration of nuclear materials and system-level studies.
For more details, including an introduction to the American Nuclear Society and the full interview, please refer to the official ANS article: https://www.ans.org/news/article-7474/inuclear-newsi-40-under-402025/#Lee
- Name: Youho Lee
- Age: 39
- Title: Associate professor, Seoul National University
- Hometown: Korea
Lee leads nuclear fuel materials research at Seoul National University. His rapid rise- from KAIST student to UNM faculty to SNU professor-reflects his exceptional initiative. He has built a research group of 21 members and secured high-impact programs and funding portfolios that advance nuclear materials research. His work on Cr-coated accident tolerant fuel and his integrative approach linking materials to systems is innovative.
When you reflect on your career so far, which achievement stands out most? I am grateful to have built a globally recognized university research group in nuclear fuel materials at Seoul National University, together with dedicated students and colleagues.
Who has been your greatest influence? I am fortunate to have had many great advisors and mentors. Professors Hee Cheon No and Jeong Ik Lee first opened my eyes to reserch during my undergraduate years. My doctoral advisor, the late Prof.Mujid Kazimi at MIT, shaped how i see nuclear engineering in perspective. My colleague and friend Prof. Mike Short at MIT continues to inspire me with his unique and genuine way of working and living. I learn a lot from my colleagues at Seoul National University-they are the best teachers I have each day.
What is the top song on repeat on your Spotify right now? I keep K-pop on repeat.
What's on your bucket list? A month in Europe with no emails.