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. 2021 Jan 29;7(5):eabe1112. doi: 10.1126/sciadv.abe1112

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Copyright © 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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Fig. 1 — (A) A linear superposition of right CP (RCP) and left CP (LCP) with different sizes of metastructures. (B) Schematic representation of the dispersive polarization response of the traditional polarization-controlling metasurfaces. (C) Broadband polarization-maintaining design consisting in combination of RCP, LCP, and LCP (or RCP, RCP, and LCP) realized with a uniform size metastructure. (D) Schematic representation of the broadband polarization-maintaining metasurfaces. (E) Angular nondispersive design with metasurface doublet. (F) Schematic representation of the angular nondispersive metasurfaces.