About the Authors

Andrew Erwin

Affiliation Mechanical Engineering Department, Rice University, Houston, TX, United States of America

Frank C. Sup IV

sup@umass.edu

Affiliation Mechanical and Industrial Engineering Department, University of Massachusetts Amherst, Amherst, MA, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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