About the Authors
- Elham Najafi
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* E-mail: e.najafi@znu.ac.ir
Affiliation Department of Physics, University of Zanjan, Zanjan, Iran
- Amir H. Darooneh
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Affiliation Department of Physics, University of Zanjan, Zanjan, Iran
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: EN AHD. Performed the experiments: EN AHD. Analyzed the data: EN AHD. Contributed reagents/materials/analysis tools: EN AHD. Wrote the paper: EN AHD.