1. Department of Electrical and Computer Engineering; National University of Singapore; 4 Engineering Drive 3 Singapore 117576 Singapore
2. Center for Sensors and MEMS; National University of Singapore; 4 Engineering Drive 3 Singapore 117576 Singapore
3. Singapore Institute for Neurotechnology (SiNAPSE); National University of Singapore; 28 Medical Drive, #05-COR Singapore 117456 Singapore
4. NUS Suzhou Research Institute (NUSRI); Suzhou Industrial Park Suzhou 215123 P. R. China
5. Pharmacy Department National University of Singapore; Singapore 117543 Singapore
6. NanoCore; Faculty of Engineering; National University of Singapore; Singapore 117576 Singapore
7. NUS Graduate School for Integrative Sciences and Engineering; Centre for Life Sciences (CeLS); Singapore 117456 Singapore