About the Authors

Wei-Dong Huang

Affiliations Biological Systems Engineering Department, Virginia Tech, Blacksburg, Virginia, United States of America, Environmental Division, College of Earth and Space Science, University of Science and Technology of China, Hefei, China

Y-H Percival Zhang

ypzhang@vt.edu

Affiliations Biological Systems Engineering Department, Virginia Tech, Blacksburg, Virginia, United States of America, Institute for Critical Technology and Applied Science (ICTAS), Virginia Tech, Blacksburg, Virginia, United States of America, DOE BioEnergy Science Center (BESC), Oak Ridge, Tennessee, United States of America, Gate Fuels Inc, Blacksburg, Virginia, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: YPZ. Performed the experiments: WDH. Analyzed the data: WDH YPZ. Wrote the paper: WDH YPZ.