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. 2016 Dec 16;6:39252. doi: 10.1038/srep39252

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Copyright © 2016, The Author(s)

This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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(a) Four basic “00”, “01”, “10”, and “11” digital elements with different metallic structure sizes. For the “01” element, w = 8 μm, L = 56 μm, for the “10” element, w = 8 μm, L = 86 μm, for the “11” element, w = 16 μm, L = 120 μm, and p = 120 μm, and for the “00” element, there is no metallic structure. (b) Schematic of the proposed 2 bit coding metasurface.