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Title: Scattering by lossy anisotropic scatterers : a modal approach
Authors: Kossowski, Nicolas
Chen, Parry Y.
Wang, Qi Jie
Genevet, Patrice
Sivan, Yonatan
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2021
Source: Kossowski, N., Chen, P. Y., Wang, Q. J., Genevet, P. & Sivan, Y. (2021). Scattering by lossy anisotropic scatterers : a modal approach. Journal of Applied Physics, 129(11), 113104-.
Project: MOE2018-T2-1-176
Journal: Journal of Applied Physics
Abstract: Scattering from anisotropic geometries of arbitrary shape is relatively difficult to interpret physically, involving the intricate interplay between material and geometric effects. Insights into complex scattering mechanisms are often enabled by modal methods that decompose the response into the well-understood multipolar resonances. Here, we extend the generalized normal mode expansion to lossy and anisotropic scatterers. Unique to the method is that it decomposes the total response of any anisotropic resonator into the modes of the corresponding isotropic resonator. This disentangles the material and geometric contributions to the scattering of any anisotropic resonator. Furthermore, the method can identify absorption and scattering resonances with separate sets of modes. We illustrate our method by considering an infinitely long cylinder with concentric metallic/dielectric layers, targeting the complex case of an effective hyperbolic response. We show that by scanning the material composition of the hyperbolic medium, we can achieve any desired scattering effect, including backscattering cancellation.
ISSN: 0021-8979
DOI: 10.1063/5.0039134
Rights: © 2021 Author(s). All rights reserved. This paper was published by AIP Publishing in Journal of Applied Physics and is made available with permission of Author(s).
Fulltext Permission: embargo_20220326
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles
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