Author Affiliations

Shuhao Shen,^a,c E Du,^d Kai Long,^a and Nanguang Chena^b,*

^aDepartment of Biomedical Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574, Singapore

^bNUS (Suzhou) Research Institute, No. 377 Linquan Street, Suzhou Industrial Park, Suzhou, Jiangsu 215123, P. R. China

^cGuangzhou Institute of Technology, Xidian University, Sino-Singapore Guangzhou Knowledge City，Huangpu District, Guangzhou, Guangdong 510555, P. R. China

^dSchool of Microelectronics, Shenzhen Institute of Information Technology, No. 2188, Longxiang Avenue, Longgang District, Shenzhen, Guangdong 518172, P. R. China

^*Corresponding author: biecng@nus.edu.sg