Mie light scattering by a single coated sphere: Extinction and absorption cross sections
Contact F. J. García de Abajo for details

Extinction (= light scattering + absorption) cross section of an individual sphere.
For details, see for example F. J. García de Abajo, Phys. Rev. B 60, 6086 (1999) and V. Myroshnychenko et al., Chem. Soc. Rev. 37, 1792 (2008).
Dielectric function εcore(ω)

For Lorentz-Drude:
εcore(ω)=εb1+ωp12/[ωg12-ω(ω+iη1)]
εb1 =
ωp1 (eV) =
ωg1 (eV) =
η1 (eV) =
Dielectric function εcoat(ω)

For Lorentz-Drude:
εcoat(ω)=εb2+ωp22/[ωg22-ω(ω+iη2)]
εb2 =
ωp2 (eV) =
ωg2 (eV) =
η2 (eV) =

Geometry under consideration

Spectral range (select one)
Other parameters Inner radius a (nm) =
Outer radius b (nm) =
lmax = (maximum orbital momentum no. ≤ 20)
Dielectric function of the environment, ε0 =