1. Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education
2. School of Chemistry
3. Beihang University
4. Beijing 100191
5. P. R. China
6. Department of Dermatology
7. the First Medical Center of Chinese PLA General Hospital
8. Beijing
9. China
10. Department of Materials Science and Engineering
11. College of Engineering
12. Peking University
13. Beijing 100871
14. Haidian Maternal & Child Health Hospital
15. Beijing 100083
16. Key Laboratory of Bio-inspired Materials and Interfacial Science
17. Technical Institute of Physics and Chemistry
18. Chinese Academy of Sciences
19. Beijing 100190
20. Division of Physics and Applied Physics
21. School of Physical and Mathematical Sciences
22. Nanyang Technological University
23. Singapore 637371
24. Singapore