About the Authors

Inchan Kwon

inchan@gist.ac.kr

Affiliations School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea, Department of Chemical Engineering, University of Virginia, Charlottesville, Virginia, United States of America

Eun Sil Choi

Affiliations School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea, Department of Biological Sciences, College of Natural Sciences, Chonnam National University, Gwangju, Republic of Korea

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: IK. Performed the experiments: IK EC. Analyzed the data: IK EC. Contributed reagents/materials/analysis tools: IK. Wrote the paper: IK EC.