The Role of Anisotropy Ratio in Backscattering of Spherically Anisotropic Particles: An Analytical Electromagnetic Characterization

摘要

We propose an analytical approach to characterize the role of anisotropic ratio in the light scattering of spherical layers with spherical anisotropy defined in spherical coordinates. Single-layer model, thin-film coating, and a collection of such spherical particles are all treated analytically, with the emphasis on the role of anisotropy in the scattering properties. Two types of anisotropic potentials are established to take into account the electric and magnetic anisotropy ratios (AR) which are fundamental to represent the electromagnetic fields in the presence of spherical polar crystallites. This paper provides a new method to depict the particle-illumination interaction at a macroscopic view, and gives new insight to the study of anisotropic interaction of particularly oriented molecular layers, elucidating the importance of anisotropy ratios in the scattering control.