the National Natural Science Foundation of China (60577040);Shanghai Foundation of Applied Materials Research and Development (0404);Nano-technology project of Shanghai (0452nm051,0552nm046);Shanghai Leading Academic Disciplines (T0101) .
Supported by National Natural Science Foundation of China (No .60577040) ;Shanghai Foundation of Applied Ma-terials Research and Development ( No .0404) ;Nano-technology Project of Shanghai ( No .0452nm051 , No .0552nm046) ;Shanghai Leading Academic Disciplines (No .T0101)
Supported by National Natural Science Foundation of China (No .60577040);Shanghai Foundation of Applied Ma-terials Research and Development ( No .0404); Nano-technology Project of Shanghai ( No .0452nm051 , No .0552nm046);Shanghai Leading Academic Disciplines (No .T0101)