1. Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong
2. Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, California 94720, United States
3. Department of Electrical and Computer Engineering, University of California, Davis, California 95616, United States
4. Research and Development, Meta Materials Inc. (META), Pleasanton, California 94588, United States
5. Research Center for Functional Materials and Nanomolecular Science, Jacobs University Bremen, 28759 Bremen, Germany
6. Institute of Chemistry, Technology and Metallurgy, University of Belgrade, 11000 Belgrade, Serbia
7. Nanomaterials Research Institute, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
8. Department of Biological and Agricultural Engineering, University of California, Davis, California 95616, United States
9. Geballe Laboratory for Advanced Materials, Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States