Light scattering inhomogeneous particles

Since the classic paper by Mie [159] or even the papers by Clebsch [37] and Lorenz [146] there is a permanent preoccupation in light scattering theory. Mie was interested in the varied colors exhibited by colloidal suspensions of noble metal spheres, but nowadays, the theory of light scattering by particles covers a much broader and diverse field. Particles encountered in practical applications are no longer considered spherical they are nonspherical, nonrotational symmetric, inhomogeneous, coated, chiral or anisotropic. 

Yeh, C., and K. K. Mei, 1980. On the scattering from arbitrarily shaped inhomogeneous particles—exact solutions, in Light Scattering by Irregularly Shaped Particles, D. Schuerman (Ed.), Plenum, New York, pp. 201-206. 

Depolarized scattering occurs because of various forms of particle anisotropy. Distinct classes of depolarizing scatterers include nonspherical particles with uniform isotropic (scalar) polarizabilities (sometimes called form anisotropy), inhomogeneous particles with nonuniform distributions of isotropic polarizability, and particles with anisotropic (tensor) polarizabilities. For each of these classes, the intensity of depolarized light scattered by a particle will change as the particle translates, rotates, or manifests internal rearrangement of its scattering elements. DDLS can provide information on the dynamics of each of these processes. 

J. D. Felske, P. F. Hsu, and J. C. Ku, The Effect of Soot Particle Optical Inhomogeneity and Agglomeration on the Analysis of Light Scattering Measurements in Flames, Journal of Quantitative Spectroscopy and Radiative Transfer, 35, p. 447,1986. 

Hence, light scattering, in principle, can be observed in an inhomogeneous medium only. Th( causes and character of heterogeneities may be various an ensemble of particles of one phase in another phase (colloidal, dispense, heterogeneous systems), density fluctuations in gases (vapours) and liquids, concentration fluctuations in multicomponent one-phase systems (solutions). 

Often the passage of radiation ( light ) through material is reduced not by absorbance but by scattering of the radiation by suspended particles or other inhomogeneities (Riiylcigli scattering). For example, very little... 

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