About the Authors

Alessandro Culotti

Affiliation Department of Civil and Environmental Engineering, McCormick School of Engineering, Northwestern University, Evanston, Illinois, United States of America

Aaron I. Packman

a-packman@northwestern.edu

Affiliation Department of Civil and Environmental Engineering, McCormick School of Engineering, Northwestern University, Evanston, Illinois, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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