About the Authors

Burton W Andrews

Affiliation Department of Electrical and Computer Engineering, The Johns Hopkins University, Baltimore, Maryland, United States of America

Pablo A Iglesias

To whom correspondence should be addressed. E-mail: pi@jhu.edu

Affiliation Department of Electrical and Computer Engineering, The Johns Hopkins University, Baltimore, Maryland, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

BWA and PAI conceived and designed the experiments, performed the experiments, analyzed the data, and wrote the paper.