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(a) Unit cell of the metasurface in the numerical simulation. The geometric parameters are as follows: a = 300 μm, d = 30 μm, l = 180 μm, p = 80 μm, and w = 10 μm; (b) calculated ΔT spectra for Zs/Z0 = 25 and 0.01; (c) calculated spectra of and for Zs/Z0 = 25 and 0.01.
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