Fig. 4

The schematic of the scattering pattern calculation. a The field calculation schematic for the coding pattern. (from Fig. 1 of Ref. [76]). b and c Two typical chess-board coding patterns. (from Fig. 3 of Ref. [76]). d and e The related scattering fields for the patterns in (b) and (c). (from Fig. 3 of Ref. [76]). Reproduced with permission from Ref. [76] under a Creative Commons Attribution 4.0 International License