About the Authors

Ah Reum Choi

Affiliation Department of Life Science and Institute of Biological Interfaces, Sogang University, Seoul, Korea

Lichi Shi

Affiliation Department of Physics, University of Guelph, Ontario, Canada

Leonid S. Brown

Affiliation Department of Physics, University of Guelph, Ontario, Canada

Kwang-Hwan Jung

kjung@sogang.ac.kr

Affiliation Department of Life Science and Institute of Biological Interfaces, Sogang University, Seoul, Korea

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AC LB KJ. Performed the experiments: AC LS. Analyzed the data: AC LS. Contributed reagents/materials/analysis tools: AC LS. Wrote the paper: AC LS LB KJ.