Figure 12.

(a) Graphene-coated cylindrical object. (b) Scattering gain (Q_s) for the graphene cloak varying chemical potential and the frequency of operation with τ = 0.5 ps. Reprinted with permission from reference [126]. Copyright American Chemical Society, 2011. (c) Scattering efficiencies (Q_sca) of three structures. (d) Normalized electric field |E/E₀| for a GCNW with R = 0.5 μm illuminated by a transverse-electric (TE)-polarized plane wave at λ₀ = 10.0 μm and 28.1 μm, corresponding to the invisibility window in (c). Reprinted with permission from reference [127]. Copyright Springer Nature, 2017.