- User-interactive sensing displays based on self-assembled light emitting polymers
- Non-volatile ferroelectric polymer memories and neuromorphic synapses
- Structural color sensing displays based on self-assembled block copolymer photonic crystals

2001 - 2002 Postdoctoral fellow (Harvard University)
2002 - present Associate, assistant, full professor (Yonsei University)
2014 - 2017 Underwood distinguished professor (Yonsei University)
2018 Meeting chair (Materials Research Society, 2018 Meeting)
2017 - present Director (Creative Materials Discovery Program)
2020 - present Director, Vice-president (The Polymer Society of Korea, Korea Flexible & Printed Electronics Society)
2020 - present Director (BK21 FOUR Education and Research Program)
2022 - present Editorial Board (Progress in Polymer Science)
2022 - present Board of Directors (Materials Research Society)
2023 - present Member (The National Academy of Engineering)

2015 Minister's Award (Ministry of Science, ICT and Future Planning)
2020 KOPTRI Academic Award (The Polymer Society of Korea)
2023 Prime Minister's Award (Ministry of Public Administration and Security)