Author Affiliations

Chang-Hua Liu,¹ You-Chia Chang,^2,3 Seunghyun Lee,^1,5 Yaozhong Zhang,⁴ Yafei Zhang,⁴ Theodore B Norris,^1,2 and Zhaohui Zhong^1,2,*

¹Department of Electrical Engineering and Computer Science, University of Michigan, 1301 Beal Avenue, Ann Arbor, Michigan 48109

²Center for Photonics and Multiscale Nanomaterials, University of Michigan, 2200 Bonisteel Blvd., Ann Arbor, Michigan 48109

³Department of Physics, University of Michigan, 450 Church St., Ann Arbor, Michigan 48109

⁴Key Laboratory for Thin Film and Microfabrication of the Ministry of Education, Research Institute of Micro/Nano Science and Technology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China

⁵Present address: Department of Electrical Engineering, Center for Integrated Systems, Stanford University, Stanford, California 94305.

^*Corresponding author: zzhong@umich.edu