About the Authors

Seungsoo Hahn

hahnss@cau.ac.kr (SH); kds@kaist.ac.kr (DK)

Affiliation Department of Chemistry, Chung-Ang University, Seoul, South Korea

Dongsup Kim

hahnss@cau.ac.kr (SH); kds@kaist.ac.kr (DK)

Affiliation Department of Bio and Brain Engineering, KAIST, Daejeon, South Korea

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Analyzed the data: SH. Contributed reagents/materials/analysis tools: SH. Wrote the paper: SH DK.