Broadening the Bandwidth of Epsilon-Near-Zero Metamaterials with Embedded Square Frames
A narrow frequency bandwidth of epsilon-near-zero metamaterials limits the use of many optical, microwave, and electronic devices. In this paper, we propose a recipe to broaden the operational bandwidth by employing a structure of properly tailored square frames nested within each other. To illustra...
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MDPI AG
2024-12-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/11/12/1185 |
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| author | Anatoliy V. Goncharenko Vyacheslav M. Silkin |
| author_facet | Anatoliy V. Goncharenko Vyacheslav M. Silkin |
| author_sort | Anatoliy V. Goncharenko |
| collection | DOAJ |
| description | A narrow frequency bandwidth of epsilon-near-zero metamaterials limits the use of many optical, microwave, and electronic devices. In this paper, we propose a recipe to broaden the operational bandwidth by employing a structure of properly tailored square frames nested within each other. To illustrate this effect, we derive the effective permittivity for the considered frame geometry. Then, we show that combining constituent materials with loss and materials with gain enables us to achieve the effective permittivity over a frequency band as small as desired. This technique may prove valuable for various applications including invisibility cloaks, camouflage, shielding, and sensorics. |
| format | Article |
| id | doaj-art-43fe5f140ddc4160b39d59f8a3321631 |
| institution | OA Journals |
| issn | 2304-6732 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj-art-43fe5f140ddc4160b39d59f8a33216312025-08-20T02:01:13ZengMDPI AGPhotonics2304-67322024-12-011112118510.3390/photonics11121185Broadening the Bandwidth of Epsilon-Near-Zero Metamaterials with Embedded Square FramesAnatoliy V. Goncharenko0Vyacheslav M. Silkin1V.E. Lashkaryov Institute of Semiconductor Physics, Nauky Ave. 41, 03028 Kyiv, UkraineDonostia International Physics Center (DIPC), Paseo de Manuel Lardizabal 4, 20018 San Sebastian, SpainA narrow frequency bandwidth of epsilon-near-zero metamaterials limits the use of many optical, microwave, and electronic devices. In this paper, we propose a recipe to broaden the operational bandwidth by employing a structure of properly tailored square frames nested within each other. To illustrate this effect, we derive the effective permittivity for the considered frame geometry. Then, we show that combining constituent materials with loss and materials with gain enables us to achieve the effective permittivity over a frequency band as small as desired. This technique may prove valuable for various applications including invisibility cloaks, camouflage, shielding, and sensorics.https://www.mdpi.com/2304-6732/11/12/1185epsilon-near-zero metamaterialseffective permittivityeffective conductivitysquare frames |
| spellingShingle | Anatoliy V. Goncharenko Vyacheslav M. Silkin Broadening the Bandwidth of Epsilon-Near-Zero Metamaterials with Embedded Square Frames Photonics epsilon-near-zero metamaterials effective permittivity effective conductivity square frames |
| title | Broadening the Bandwidth of Epsilon-Near-Zero Metamaterials with Embedded Square Frames |
| title_full | Broadening the Bandwidth of Epsilon-Near-Zero Metamaterials with Embedded Square Frames |
| title_fullStr | Broadening the Bandwidth of Epsilon-Near-Zero Metamaterials with Embedded Square Frames |
| title_full_unstemmed | Broadening the Bandwidth of Epsilon-Near-Zero Metamaterials with Embedded Square Frames |
| title_short | Broadening the Bandwidth of Epsilon-Near-Zero Metamaterials with Embedded Square Frames |
| title_sort | broadening the bandwidth of epsilon near zero metamaterials with embedded square frames |
| topic | epsilon-near-zero metamaterials effective permittivity effective conductivity square frames |
| url | https://www.mdpi.com/2304-6732/11/12/1185 |
| work_keys_str_mv | AT anatoliyvgoncharenko broadeningthebandwidthofepsilonnearzerometamaterialswithembeddedsquareframes AT vyacheslavmsilkin broadeningthebandwidthofepsilonnearzerometamaterialswithembeddedsquareframes |