About the Authors

Kai Liu

Affiliation Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China

Yuan Yuan

Affiliation Department of Mechanics and Aerospace Engineering, College of Engineering, Peking University, Beijing, China

Jianyong Huang

Affiliations Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China, Department of Mechanics and Aerospace Engineering, College of Engineering, Peking University, Beijing, China

Qiong Wei

Affiliation Department of Mechanics and Aerospace Engineering, College of Engineering, Peking University, Beijing, China

Mingshu Pang

Affiliation Department of Mechanics and Aerospace Engineering, College of Engineering, Peking University, Beijing, China

Chunyang Xiong

cyxiong@pku.edu.cn

Affiliations Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China, Department of Mechanics and Aerospace Engineering, College of Engineering, Peking University, Beijing, China

Jing Fang

Affiliations Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China, Department of Mechanics and Aerospace Engineering, College of Engineering, Peking University, Beijing, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: KL JH CX JF. Performed the experiments: KL YY QW MP. Analyzed the data: KL YY JH CX. Contributed reagents/materials/analysis tools: KL QW MP CX JF. Wrote the paper: KL YY CX JF.