Han, Ranran
Xiao, Jinting
Zhai, Hui
Hao, Junwei
Funding for this research was provided by:
Key Project of Natural Science Foundation of Tianjin Province (12JCZDJC24200)
the Program for New Century Excellent Talents in University of China (NCET 111067)
the National Natural Science Foundation of China (81322018, 81100887)
National Natural Science Foundation of China (81273287)