1. Institute of Atomic and Molecular Physics, Sichuan University, 610065 Sichuan, P. R. China
2. Metrology Research Centre, National Research Council Canada, Ottawa, Ontario K1A 0R6, Canada
3. School of Physical Science and Technology, Sichuan University, 610065 Sichuan, P. R. China
4. Analytical & Testing Center, Sichuan University, 610065 Sichuan, P. R. China
5. Engineering Research Center in Biomaterials, Sichuan University, 610065 Sichuan, P. R. China
6. Laboratory of Ethnopharmacology, West China School of Medicine, Sichuan University, 610065 Sichuan, People’s Republic of China
7. State Key Laboratory of Polymer Materials Engineering, Sichuan University, 610065 Sichuan, P. R. China