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(a) Schematic view of the designed frequency-tunable reconfigurable multifunctional metasurface; (b) The unit cell of the metasurface composed of three layers; (c) Geometric parameters are the following: P = 54 μm, l1 = 70 μm, l2 = 3.5 μm, w = 5 μm, g = 10 μm, t = 9 μm, tm = 0.2 μm.
