About the Authors

Thuc T. Le

jcheng@purdue.edu

Affiliation Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana, United States of America

Ji-Xin Cheng

Affiliations Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana, United States of America, Department of Chemistry, Purdue University, West Lafayette, Indiana, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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