Abstract
An efficient progressive
methodology is presented for the computation of multi-scattering of
electromagnetic waves by a multilayered concentric nanoparticle.
Instead of solving a large set of system equations as reported in
other works, the proposed approach utilizes a progressive algorithm
which considers two adjacent shell layers at a time, marching
progressively from the innermost to the outmost layer, and requires
only multiplication of
4
×
4
matrices. The progressive algorithm
yields the analytical expression for the scattering parameter of the
concentric particle. Moreover, the progressive algorithm allows the
scattering coefficients of a specific internal layer to be computed
selectively, rather than having to calculate those of all layers of
the entire particle as required by other algorithms. We show that the
presented progressive method has equivalent accuracy to the well-known
recursive algorithm, but it is more attractive due to its lower
complexity in implementation. It is shown that light scattering of
both a single solid sphere and two-layered concentric shell are
special cases of the proposed methodology. Case study demonstrates
that the presented methodology is useful in assisting the design of a
multilayered core/shell structure with maximum forward scattering
feature, indicating it is applicable to the exploration of optical
phenomena of nanoparticles with numerous layers. Moreover, the present
progressive algorithm is further extended to the electromagnetic
scattering by an eccentric multilayered particle with inner cores
displaced along a line defined by the centers of the spheres, which
provides extra freedoms for the design of optical core shell spherical
particles.
Funder
M-Cube program and Sunshine Energy
Inc.
Subject
Atomic and Molecular Physics, and Optics,Engineering (miscellaneous),Electrical and Electronic Engineering
Cited by
1 articles.
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