About the Authors
- Li Xiong
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Affiliations School of Mechanical and Precision Instrument Engineering, Xi’an University of Technology, Xi’an, 710048, China, School of Physics and Electromechanical Engineering, He’xi University, Zhang’ye, 734000, China
- Yan-Jun Lu
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* E-mail: yanjunlu@xaut.edu.cn
Affiliation School of Mechanical and Precision Instrument Engineering, Xi’an University of Technology, Xi’an, 710048, China
- Yong-Fang Zhang
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Affiliation School of Printing, Packaging Engineering and Digital Media, Xi’an University of Technology, Xi’an, 710048, China
- Xin-Guo Zhang
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Affiliation School of Information Science and Engineering, Lan’zhou University, Lan’zhou, 730000, China
- Parag Gupta
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Affiliation Robert R. McCormick School of Engineering and Applied Science, Northwestern University, Evanston, IL, 60208, United States of America
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: LX XGZ YJL. Performed the experiments: LX YJL XGZ. Analyzed the data: LX YJL YFZ XGZ. Contributed reagents/materials/analysis tools: LX YJL YFZ XGZ. Wrote the paper: LX YJL PG.