About the Authors
- Bogdan Barz
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Affiliation Physics Department, Drexel University, Philadelphia, Pennsylvania, United States of America
- Brigita Urbanc
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* E-mail: brigita@drexel.edu
Affiliation Physics Department, Drexel University, Philadelphia, Pennsylvania, United States of America
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: BU BB. Performed the experiments: BB. Analyzed the data: BB. Wrote the paper: BU.