1. Shanghai
Key Laboratory of Mechanics in Energy Engineering and Institute of
Applied Mathematics and Mechanics, Shanghai University, Shanghai 200444, P. R. China
2. Nano
Science and Technology Research Center, Shanghai University, Shanghai 200444, P. R. China
3. Research
Center for Composite Materials, Shanghai University, Shanghai 200444, P. R. China
4. Department
of Physics, University of Cyprus, Nicosia 1678, Cyprus