1. Department of Chemical and Biological Engineering, Guangdong-Hong Kong-Macao Joint Laboratory for Intelligent Micro-Nano Optoelectronic Technology, William Mong Institute of Nano Science and Technology and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong999777, P. R. China
2. Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong999777, P. R. China
3. Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania16802, United States
4. School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan430074, P. R. China
5. State Key Laboratory of Luminescent Materials and Devices, Department of Electronic Materials, School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
6. Department of Biomedical Engineering, Chinese University of Hong Kong, Shatin, New Territories, Hong Kong999777, P. R. China
7. CUHK Shenzhen Research Institute, No.10, second, Yuexing Road, Nanshan, Shenzhen518057, P. R. China
8. Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong999777, P. R. China
9. The Hong Kong University of Science and Technology Shenzhen Research Institute, No. 9 Yuexing first RD, South Area Hi-tech Park, Nanshan, Shenzhen518057, China