基金Supported by the National Natural Science Foundation of China (Grant No .60534050)the Ph.D.Programs Foundation of the Ministry of Education of China (Grant No .200800560020)
基金The General Financial Grant from China Postdoctoral Science Foundation(No.2013M532167)the Hunan Provincial Innovation Foundation for Postgraduates(No.CX2013B019)the Fund of Innovation,NUDT(No.B130403)