An infrared energy harvester based on radar cross-section reduction of chiral metasurfaces through phase cancellation approach

Abstract Conventional metasurface absorbers rely on high dissipation losses by incorporating lossy materials. In this paper, we propose a novel mechanism of absorption based on phase cancellation of polarization states of scattered fields emerging from adjacent L-shaped chiral meta-atoms (unit cells...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Muhammad Amin, Omar Siddiqui, Thamer S. Almoneef
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/fedbe7b365194f84a786cfd068cbe5c7
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:fedbe7b365194f84a786cfd068cbe5c7
record_format	dspace
spelling	oai:doaj.org-article:fedbe7b365194f84a786cfd068cbe5c72021-12-02T15:02:23ZAn infrared energy harvester based on radar cross-section reduction of chiral metasurfaces through phase cancellation approach10.1038/s41598-021-90886-02045-2322https://doaj.org/article/fedbe7b365194f84a786cfd068cbe5c72021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-90886-0https://doaj.org/toc/2045-2322Abstract Conventional metasurface absorbers rely on high dissipation losses by incorporating lossy materials. In this paper, we propose a novel mechanism of absorption based on phase cancellation of polarization states of scattered fields emerging from adjacent L-shaped chiral meta-atoms (unit cells). A linearly polarized wave forms helicoidal currents in each meta-atom leading to diagonally polarized radiated waves. When phase cancellation is employed by reorienting four such meta-atoms in a supercell configuration, contra-directed chiral currents flow in adjacent cells to cancel all the radiated fields in far-field region leading to a minimal broadside radar cross-section. From the reciprocity, the currents that are induced in the meta-atoms produce a null towards the incident direction which can be utilized for infrared energy harvesting. Full wave electromagnetic simulation indicates near perfect resonant absorption around 52.2 THz frequency. Enhanced bandwidth is shown by adding smaller resonators inside the supercell in nested form leading to dual band absorption at 45.2 THz and 53.15 THz.Muhammad AminOmar SiddiquiThamer S. AlmoneefNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Muhammad Amin Omar Siddiqui Thamer S. Almoneef An infrared energy harvester based on radar cross-section reduction of chiral metasurfaces through phase cancellation approach
description	Abstract Conventional metasurface absorbers rely on high dissipation losses by incorporating lossy materials. In this paper, we propose a novel mechanism of absorption based on phase cancellation of polarization states of scattered fields emerging from adjacent L-shaped chiral meta-atoms (unit cells). A linearly polarized wave forms helicoidal currents in each meta-atom leading to diagonally polarized radiated waves. When phase cancellation is employed by reorienting four such meta-atoms in a supercell configuration, contra-directed chiral currents flow in adjacent cells to cancel all the radiated fields in far-field region leading to a minimal broadside radar cross-section. From the reciprocity, the currents that are induced in the meta-atoms produce a null towards the incident direction which can be utilized for infrared energy harvesting. Full wave electromagnetic simulation indicates near perfect resonant absorption around 52.2 THz frequency. Enhanced bandwidth is shown by adding smaller resonators inside the supercell in nested form leading to dual band absorption at 45.2 THz and 53.15 THz.
format	article
author	Muhammad Amin Omar Siddiqui Thamer S. Almoneef
author_facet	Muhammad Amin Omar Siddiqui Thamer S. Almoneef
author_sort	Muhammad Amin
title	An infrared energy harvester based on radar cross-section reduction of chiral metasurfaces through phase cancellation approach
title_short	An infrared energy harvester based on radar cross-section reduction of chiral metasurfaces through phase cancellation approach
title_full	An infrared energy harvester based on radar cross-section reduction of chiral metasurfaces through phase cancellation approach
title_fullStr	An infrared energy harvester based on radar cross-section reduction of chiral metasurfaces through phase cancellation approach
title_full_unstemmed	An infrared energy harvester based on radar cross-section reduction of chiral metasurfaces through phase cancellation approach
title_sort	infrared energy harvester based on radar cross-section reduction of chiral metasurfaces through phase cancellation approach
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/fedbe7b365194f84a786cfd068cbe5c7
work_keys_str_mv	AT muhammadamin aninfraredenergyharvesterbasedonradarcrosssectionreductionofchiralmetasurfacesthroughphasecancellationapproach AT omarsiddiqui aninfraredenergyharvesterbasedonradarcrosssectionreductionofchiralmetasurfacesthroughphasecancellationapproach AT thamersalmoneef aninfraredenergyharvesterbasedonradarcrosssectionreductionofchiralmetasurfacesthroughphasecancellationapproach AT muhammadamin infraredenergyharvesterbasedonradarcrosssectionreductionofchiralmetasurfacesthroughphasecancellationapproach AT omarsiddiqui infraredenergyharvesterbasedonradarcrosssectionreductionofchiralmetasurfacesthroughphasecancellationapproach AT thamersalmoneef infraredenergyharvesterbasedonradarcrosssectionreductionofchiralmetasurfacesthroughphasecancellationapproach
_version_	1718389116660350976

An infrared energy harvester based on radar cross-section reduction of chiral metasurfaces through phase cancellation approach

Ejemplares similares