1. State
Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China
2. State
Key Laboratory of Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
3. Department
of Preventive Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
4. School
of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0620, United States
5. Institute
of Paper Science and Technology, Georgia Institute of Technology, Atlanta, Georgia 30332-0620, United States