1. INRS-EMT, Université du Québec, 1650 Boul. Lionel-Boulet, Varennes,
QC, Canada J3X 1S2
2. Department
of Materials Science
and Engineering, McMaster University, 1280
Main Street West, Hamilton, ON, Canada L8S 4L7
3. Department of Mechanical & Aerospace Engineerings, West Virginia University, Morgantown, West Virginia 26506, United States
4. School of Science, Minzu University of China, Beijing 100081, P. R. China
5. Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R.
China