Fig. 15From: Information Metamaterials: bridging the physical world and digital worldThe schematic of the smart metasurface. a The example situation for self-adaptive smart metasurface. (from Fig. 1 of Ref. [8]). b The illustration of a closed-loop system for smart metasurface. (from Fig. 1 of Ref. [86]). Reproduced with permission from Ref. [86] under a Creative Commons Attribution 4.0 International License. Copyright 2019, Springer NatureBack to article page