Effects of symmetry-breaking on electromagnetic backscattering

Abstract Systems with a discrete rotational symmetry $$2\pi /n$$ 2 π / n where $$n\ge 3$$ n ≥ 3 that also have electromagnetic duality symmetry exhibit zero backscattering. The impact of breaking one of the two symmetries on the emerging backscattering has not yet been systematically studied. Here,...

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Autores principales:	Mohamed Ismail Abdelrahman, Evgeniia Slivina, Carsten Rockstuhl, Ivan Fernandez-Corbaton
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d6cbad33dd8b44d0b640f7c2eeed15f5
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id	oai:doaj.org-article:d6cbad33dd8b44d0b640f7c2eeed15f5
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spelling	oai:doaj.org-article:d6cbad33dd8b44d0b640f7c2eeed15f52021-12-02T13:57:13ZEffects of symmetry-breaking on electromagnetic backscattering10.1038/s41598-020-80347-52045-2322https://doaj.org/article/d6cbad33dd8b44d0b640f7c2eeed15f52021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-80347-5https://doaj.org/toc/2045-2322Abstract Systems with a discrete rotational symmetry $$2\pi /n$$ 2 π / n where $$n\ge 3$$ n ≥ 3 that also have electromagnetic duality symmetry exhibit zero backscattering. The impact of breaking one of the two symmetries on the emerging backscattering has not yet been systematically studied. Here, we investigate the effect that perturbatively breaking each of the two symmetries has on the backscattering off individual objects and 2D arrays. We find that the backscattering off electromagnetically-small prisms increases with the parameters that determine the symmetry breaking, and that the increase of the backscattering due to the progressive breaking of one of the symmetries can be related to the other symmetry. Further exploration of the interplay between the two symmetries reveals that, in systems lacking enough rotational symmetry, the backscattering can be almost-entirely suppressed for a given linear polarization by deliberately breaking the duality symmetry. This duality breaking can be interpreted as an effective increase of the electromagnetic degree of rotational symmetry for that linear polarization.Mohamed Ismail AbdelrahmanEvgeniia SlivinaCarsten RockstuhlIvan Fernandez-CorbatonNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Mohamed Ismail Abdelrahman Evgeniia Slivina Carsten Rockstuhl Ivan Fernandez-Corbaton Effects of symmetry-breaking on electromagnetic backscattering
description	Abstract Systems with a discrete rotational symmetry $$2\pi /n$$ 2 π / n where $$n\ge 3$$ n ≥ 3 that also have electromagnetic duality symmetry exhibit zero backscattering. The impact of breaking one of the two symmetries on the emerging backscattering has not yet been systematically studied. Here, we investigate the effect that perturbatively breaking each of the two symmetries has on the backscattering off individual objects and 2D arrays. We find that the backscattering off electromagnetically-small prisms increases with the parameters that determine the symmetry breaking, and that the increase of the backscattering due to the progressive breaking of one of the symmetries can be related to the other symmetry. Further exploration of the interplay between the two symmetries reveals that, in systems lacking enough rotational symmetry, the backscattering can be almost-entirely suppressed for a given linear polarization by deliberately breaking the duality symmetry. This duality breaking can be interpreted as an effective increase of the electromagnetic degree of rotational symmetry for that linear polarization.
format	article
author	Mohamed Ismail Abdelrahman Evgeniia Slivina Carsten Rockstuhl Ivan Fernandez-Corbaton
author_facet	Mohamed Ismail Abdelrahman Evgeniia Slivina Carsten Rockstuhl Ivan Fernandez-Corbaton
author_sort	Mohamed Ismail Abdelrahman
title	Effects of symmetry-breaking on electromagnetic backscattering
title_short	Effects of symmetry-breaking on electromagnetic backscattering
title_full	Effects of symmetry-breaking on electromagnetic backscattering
title_fullStr	Effects of symmetry-breaking on electromagnetic backscattering
title_full_unstemmed	Effects of symmetry-breaking on electromagnetic backscattering
title_sort	effects of symmetry-breaking on electromagnetic backscattering
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/d6cbad33dd8b44d0b640f7c2eeed15f5
work_keys_str_mv	AT mohamedismailabdelrahman effectsofsymmetrybreakingonelectromagneticbackscattering AT evgeniiaslivina effectsofsymmetrybreakingonelectromagneticbackscattering AT carstenrockstuhl effectsofsymmetrybreakingonelectromagneticbackscattering AT ivanfernandezcorbaton effectsofsymmetrybreakingonelectromagneticbackscattering
_version_	1718392349612048384

Effects of symmetry-breaking on electromagnetic backscattering

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