1. State Key Laboratory of Natural Medicines; School of Basic Medical Sciences and Clinical Pharmacy; China Pharmaceutical University; Nanjing Jiangsu 211198 China
2. Singapore Bioimaging Consortium; Agency for Science; Technology and Research (A* STAR); 138667 Singapore Singapore
3. Department of Chemistry; National University of Singapore; 117543 Singapore Singapore
4. Department of Orthopedic Surgery; National University of Singapore; 119228 Singapore Singapore
5. Singapore Institute of Neurotechnology (SINAPSE); National University of Singapore; 117456 Singapore Singapore
6. Departments of Biomedical Engineering and Neurology; Johns Hopkins University; Baltimore USA
7. State Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering; Hunan University; Changsha Hunan 410082 China
8. Institute of Materials Research and Engineering; Agency for Science Technology and Research (A* STAR); 117602 Singapore Singapore