国家自然科学基金(30500628, 30672626, 30825041, 30630071), 国家重点基础研究发展计划(“973”计划,2005CB523105), 上海市教育发展基金会晨光计划(2007CG51).
Supported by National Natural Science Foundation of China (30500628, 30672626, 30825041 and 30630071), National Program on Key Basic Research Projects (“973” Program, 2005CB523105), and Shanghai Educational Development Foundation (2007CG51).