1. State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing, People's Republic of China
2. School of Engineering Science, University of Chinese Academy of Sciences, Beijing, People's Republic of China
3. CAS Center for Excellence in Complex System Mechanics, Beijing, People's Republic of China
4. Department of Physics, Tezpur University, Tezpur, India
5. School of Civil and Mechanical Engineering, Curtin University, Western Australia, Australia
6. Materials Research Centre, Indian Institute of Science, Bangalore, India