Group Leader: Prof. Dr. LI Weiqi Dr. ZHENG Guowei (Research Assistant) Dr. YU Buzhu (Research Assistant) Dr. ZHANG Xuedong (Research Assistant) Mr. TAO Faqing (Technician) Mr. YUAN Bin (Technician) Ms. GUO Ruixian (Secretary) Ph. D. Candidates: Miss. WANG Dandan Miss. YU Xiaomei Miss. LI Aihua Miss. ZHANG Jie Mr. LIN Liang M.S. Students: Miss. TANG Ting Mr. YANG Duanpeng