作者机构:[1]School of Materials Science and Engineering, Southeast University, Nanjing 211198, China, [2] Jiangsu Key Laboratory for Advanced Metallic Materials, Nanjing 211189, China
相关基金:Acknowledgements This work was supported by the National Natural Science Foundation of China under grant No. 50771031 and the Early Research Foundation of Southeast University under grant No. XJ0612238. The authors would like to thank Prof. Ye Pan, Southeast University, and Prof. Mingdong Cai, University of Houston for valuable discussion and critics on this paper.