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Transformation Optics Using Graphene

Science  10 Jun 2011:
Vol. 332, Issue 6035, pp. 1291-1294
DOI: 10.1126/science.1202691

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  1. Fig. 1

    (A) Real part and (B) imaginary part of the conductivity as a function of the chemical potential and frequency (T = 3 K, Γ = 0.43 meV), following the Kubo formula (17).

  2. Fig. 2

    Simulation results showing snap shot in time of y component of the electric field, Ey for the near total reflection of a TM electromagnetic SPP wave on a free-standing graphene (w = 800 nm, T = 3 K, Γ = 0.43 meV, μc = 0.15 eV). The Vb1 and Vb2 are chosen so that the two halves of graphene acquire complex conductivity values σg1 = 0.0009 + i0.0765 mS and σg2 = 0.0039 – i0.0324 mS.

  3. Fig. 3

    (A) Simulation results of Ey (snap shot in time) for an IR-guided wave at f = 30 THz along the ribbon-like section of graphene with the chemical potential μc1 (L = 560 nm, w = w1 + w2 + w3 = 200 + 200 + 200 nm). (B) Similar to (A), but here the ribbon-like section splits into two paths (L1 = 1077 nm, L2 = 560 nm, w = w1 + w2 + w3 = 600 + 200 + 600 nm) (26). Different scale bars in each panel. The graphene conductivity parameters are similar to those in Fig. 2.

  4. Fig. 4

    (A) Flatland metamaterial: the snap shot in time of the electric field vectors for the TM SPP along a single sheet of graphene at f = 30 THz, shown on the graphene plane. Only one row of the 2D periodic array is shown (D = 30 nm, d = w = 55 nm, L = 370 nm). (B) One-atom-thick Luneburg lens: Simulation results showing the phase of Ey of the SPP at f = 30 THz along the graphene (D = 1.5 μm, w = 75 nm, L = 1.6 μm).