基金Supported by Hunan Province Nature Science Foundation of China(No.03JJY3015)and Foundation for University Key Teacher by the Ministry of Education(2000-06)
基金Supported by National Natural Science Foundation of China (No .60577040) Shanghai Foundation of Applied Ma-terials Research and Development ( No .0404) +1 种基金Nano-technology Project of Shanghai ( No .0452nm051 , No .0552nm046) Shanghai Leading Academic Disciplines (No .T0101)