The National Basic Research Program of China(No.2012CB315701,2012CB315702and 2011CB301705);the National Nature Science Foundation of China(No.60925019,61090393,61205109,61377037);the Science and Technology Innovation Team of Sichuan Province(No.2011JTD0001);the Fundamental Research Funds for the Central Universities(No.ZYGX2011J052)