4D Wave transformations enabled by space-time metasurfaces: foundations and illustrative examples
4D Wave transformations enabled by space-time metasurfaces: foundations and illustrative examples
Static metasurfaces have been shown to be prominent compact structures for reciprocal and frequency-invariant transformations of electromagnetic waves in space. However, incorporating temporal variation to static metasurfaces enables dynamic apparatuses that are capable of 4D tailoring of both the spatial and temporal characteristics of electromagnetic waves, leading to functionalities that are far beyond the capabilities of conventional static metasurfaces. This includes nonreciprocal full-duplex wave transmission, pure frequency conversion, parametric wave amplification, space-time (ST) decomposition, and ST wave diffraction. This article overviews our recent progress on the analysis and functionalities of ST metasurfaces and slabs to break reciprocity. We study different operation regimes of ST metasurfaces, such as scattering and diffraction at ST interfaces, ST sinusoidally varying surfaces and slabs, and transmissive and reflective ST metasurfaces. Additionally, corresponding applications are outlined.
Metasurfaces, Electromagnetic scattering, Antennas, Slabs, Dispersion, Metamaterials, Media
61-74
Taravati, Sajjad
0026f25d-c919-4273-b956-8fe9795b31ce
Eleftheriades, George V.
280bbae6-32df-4af5-bcad-110f38ad72e7
1 August 2023
Taravati, Sajjad
0026f25d-c919-4273-b956-8fe9795b31ce
Eleftheriades, George V.
280bbae6-32df-4af5-bcad-110f38ad72e7
Taravati, Sajjad and Eleftheriades, George V.
(2023)
4D Wave transformations enabled by space-time metasurfaces: foundations and illustrative examples.
IEEE Antennas and Propagation Magazine, 65 (4), .
(doi:10.1109/MAP.2022.3201195).
Abstract
Static metasurfaces have been shown to be prominent compact structures for reciprocal and frequency-invariant transformations of electromagnetic waves in space. However, incorporating temporal variation to static metasurfaces enables dynamic apparatuses that are capable of 4D tailoring of both the spatial and temporal characteristics of electromagnetic waves, leading to functionalities that are far beyond the capabilities of conventional static metasurfaces. This includes nonreciprocal full-duplex wave transmission, pure frequency conversion, parametric wave amplification, space-time (ST) decomposition, and ST wave diffraction. This article overviews our recent progress on the analysis and functionalities of ST metasurfaces and slabs to break reciprocity. We study different operation regimes of ST metasurfaces, such as scattering and diffraction at ST interfaces, ST sinusoidally varying surfaces and slabs, and transmissive and reflective ST metasurfaces. Additionally, corresponding applications are outlined.
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4D wave transformations enabled by space-time metasurfaces: Foundations and illustrative examples
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e-pub ahead of print date: 12 September 2022
Published date: 1 August 2023
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© 1990-2011 IEEE.
Keywords:
Metasurfaces, Electromagnetic scattering, Antennas, Slabs, Dispersion, Metamaterials, Media
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Local EPrints ID: 483435
URI: http://eprints.soton.ac.uk/id/eprint/483435
ISSN: 1045-9243
PURE UUID: b0c50e0f-9086-472c-ac97-d283a3166fe0
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Date deposited: 30 Oct 2023 18:12
Last modified: 02 May 2024 02:05
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Author:
Sajjad Taravati
Author:
George V. Eleftheriades
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