Figure 4
From: Dual-functional tunable coding metasurface based on saline water substrate

The phase and amplitude responses of elements with different dimension b, based on the pure water substrate and NaCl solution substrate respectively. (a) and (b) The phase responses of elements based on pure water and NaCl solution substrate respectively. (c) and (d) The amplitude responses of elements based on pure water and NaCl solution substrate respectively. The results of b = 2, 3, 4, 5, 6, 7, 8, 9 mm are noted with different colors and linetypes.