Scattering by 2 Spheres in Contact - Comparisons between Discrete-Dipole Approximation and Modal-Analysis

Citation:
Flatau, PJ, Fuller KA, Mackowski DW.  1993.  Scattering by 2 Spheres in Contact - Comparisons between Discrete-Dipole Approximation and Modal-Analysis. Applied Optics. 32:3302-3305.

Date Published:

Jun

Keywords:

algorithm, grains, irregular particles, light, scattering

Abstract:

This paper applies two different techniques to the problem of scattering by two spheres in contact: modal analysis, which is an exact method, and the discrete-dipole approximation (DDA). Good agreement is obtained, which further demonstrates the utility of the DDA to scattering problems for irregular particles. The choice of the DDA polarizability scheme is discussed in detail. We show that the lattice dispersion relation provides excellent improvement over the Clausius-Mossoti polarizability parameterization.

Notes:

n/a

Website

DOI:

10.1364/AO.32.003302