- Molecular Imaging
- Nanomedicine
- Cancer immunotherapy

2005-2011 Senior Research Scientist, Biomedical Research Institute, Korea Institute of Science & Technology
2011-present Principal Research Scientist, Biomedical Research Institute, Korea Institute of Science & Technology
2017-2019 Head, Center for Theragnosis, Korea Institute of Science & Technology
2017-2022 Professor, KU-KUST Graduate School, Korea University
2022-present Distinguished Professor, College of Pharmacy, Ewha Womans University

2010 Excellent Research Scientist” by Korea Institute of Science and Technology
2012 Excellent Young Fellow” by Korea Institute of Science and Technology (KIST)
2013 Prime Minister's Commendation” by Government of the Republic of Korea
2014 Highly Cited Researchers (HCR)” by Web of Science Group
2015 Highly Cited Researchers (HCR)” by Web of Science Group
2016 Highly Cited Researchers (HCR)” by Web of Science Group
2017 Highly Cited Researchers (HCR)” by Web of Science Group
2017 Excellent Research Scientist” by Korea Nanotechnology Research Society
2018 Highly Cited Researchers (HCR)” by Web of Science Group