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. 2018 Oct 14;8(10):834. doi: 10.3390/nano8100834

Figure 1.

Figure 1

Schematic illustrations of the proposed frequency-reconfigurable wide-angle terahertz absorbers. (a) The absorber with a single-layer decussate graphene ribbon array (SLDGRA); (b) The absorber with double-layer decussate graphene ribbon arrays (DLDGRAs); (c) top view of the unit cell of the proposed absorber with SLDGRA; (d) top view of the unit cell of the proposed absorber with DLDGRA. The geometric parameters of the absorbers were set as Lx = Ly = 4 µm, Wx = Wy = 0.9 μm, h1 = 1 μm, h2 = 4 μm, h3 = 1 μm.