Author Affiliations

Dao-Liu Liu,¹ Yong-Lu Hu,¹ Bo Wang,¹ Jun-Fang Wu,^1,3 and Chao Li^1,2,*

¹School of Physics and Optoelectronic Technology, South China University of Technology, Guangzhou, China

²Department of Electrical and Computer Engineering, University of Wisconsin, Madison, Wisconsin, U.S.A

³Department of Biomedical Engineering, University of Wisconsin, Madison, Wisconsin, U.S.A

^*Corresponding author: lichao@scut.edu.cn