alpha_ellipsoid

Principal polarisability components for an ellipsoidal particle

alpha_ellipsoid(sizes, material, medium)

Arguments

sizes

matrix of cluster sizes in nm

material

data.frame with wavelength and epsilon

medium

refractive index of surrounding medium

Value

matrix of polarisability

Details

This long-wavelength polarisability approximation uses the Kuwata prescription

The Kuwata prescription includes semi-empirical terms of radiative correction and dynamic depolarisation to better match the fully retarded dipolar response in a reasonable range of (subwavelength) sizes and aspect ratios.

References

Kuwata et al. Resonant light scattering from metal nanoparticles: Practical analysis beyond Rayleigh approximation Appl. Phys. Lett. 83, 22 (2003)

See also

Other user_level polarisability: alpha_bare, alpha_dye