Figure 1
From: Fluidically Switchable Metasurface for Wide Spectrum Absorption
Proposed Switchable metasurface for wideband absorption. (a) Top view of top metal-imprinted-FR4 dielectric layer. The dimensions of the unit cell geometry are: a = 10.4 mm, b = 9.4 mm, c = 4 mm, g = 2 mm, p = 0.8 mm, w = 0.5 mm, and R = 100 Ω. (b) Top view of middle layer comprising microchannel-inscribed-PDMS layer, where l1 = 9.2 mm, l2 = 5.8 mm, w1 = 2 mm, r = 4 mm, and k = 0.5 mm. (c) Top view of bottom layer consisting of microchannel-inscribed-PDMS layer, with identical parameters. (d) Side view of the overall metasurface, resulting from stacking multiple layers (td = 1.2 mm, tp = 3 mm, and ts = 2 mm). Individual layers are joined together using thin bonding film (tb = 50 μm), whereas the microfluidic channels are engraved inside the PDMS layers with precise thickness (tm = 0.4 mm). (e) Perspective view of the periodic array structure.
