About the Authors
- Dallas D. Freeman
- Kyungwho Choi
- Choongho Yu
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* E-mail: chyu@tamu.edu
Affiliation Department of Mechanical Engineering, Texas A&M University, College Station, Texas, United States of America
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: CY DF. Performed the experiments: DF KC CY. Analyzed the data: CY DF. Contributed reagents/materials/analysis tools: DF KC CY. Wrote the paper: DF CY KC.