Plasmonic nanostructures and metamaterials

• Figure 2: Mie scattering against a solid metallic sphere.

Radar back scattering (RBS; red) and forward scattering (FS; blue) cross-sections versus normalized frequency /p. The dielectric permittivity is described by the Drude formula, /p = 10−3 (weak dissipation), where p is the plasma frequency and γ is the collision frequency. Parameter = pa/c = 0.7. Calculations using equation (3) and the simplified equation (4) differ less than the thickness of the lines. Inset shows polar scattering diagrams in the x–z plane (azimuthal angle = 0 in Mie theory) near the quadrupole resonance of a plasmonic particle. Red lines shows linearly polarized light; blue lines represent non-polarized light.

• Figure 3: Higher-order multipolar Fano resonances in Mie scattering against a solid metallic sphere.

a, Radar back scattering (red) and forward scattering (blue) cross-sections calculated using equation (3) versus normalized frequency /p. The dielectric permittivity is described by the Drude formula, /p = 10−3. The size parameter = p = 1.7. b, Magnetic Fano resonance for a particle with negative , = 1 and size parameter = 0.7. c, d, Contour plots of radar back scattering (c) and forward scattering (d) cross-sections in the vicinity of electric and magnetic quadrupole on the plane {, } parameters in the material with negative refractive index. The size parameter () is equal to 0.7. The insets shows corresponding three-dimensional plots.

• Figure 4: Extinction spectra of non-concentric ring/disk cavity and a plasmonic dolmen structure.