Vanadium dioxide-based tunable broadband metamaterial absorber in the terahertz
This study presents a three-layer broadband absorber comprising a vanadium dioxide (VO _2 ) layer at the top, a polytetrafluoroethylene layer in the middle, and a gold film at the bottom. Absorption curves were calculated using the multiple-reflection principle and impedance matching theory, and the...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/ada41b |
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| author | Yuqi Zhu |
| author_facet | Yuqi Zhu |
| author_sort | Yuqi Zhu |
| collection | DOAJ |
| description | This study presents a three-layer broadband absorber comprising a vanadium dioxide (VO _2 ) layer at the top, a polytetrafluoroethylene layer in the middle, and a gold film at the bottom. Absorption curves were calculated using the multiple-reflection principle and impedance matching theory, and the obtained results were consistent with the simulation results. According to simulation results, within the range of controllable conductivity of VO _2 , the absorption rate of the as-developed structure varied from 1.5% to 99.8%, with the bandwidth extending from 0 THz to 5.19 THz. The metamaterial maintained > 75% absorption across the frequency band for incident angles up to 45°, with the absorption rate varying for different polarization angles. The as-developed metamaterial exhibited the characteristics of wide-angle incidence and polarization sensitivity and has excellent application prospects in the domains of medicine, military, and communication. |
| format | Article |
| id | doaj-art-1f76b900c2354dabb39c6c952cccb4c2 |
| institution | Kabale University |
| issn | 2053-1591 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj-art-1f76b900c2354dabb39c6c952cccb4c22025-01-09T11:09:40ZengIOP PublishingMaterials Research Express2053-15912025-01-0112101580110.1088/2053-1591/ada41bVanadium dioxide-based tunable broadband metamaterial absorber in the terahertzYuqi Zhu0https://orcid.org/0009-0003-8464-1939School of Electrical and Information Engineering, Tianjin University , People’s Republic of ChinaThis study presents a three-layer broadband absorber comprising a vanadium dioxide (VO _2 ) layer at the top, a polytetrafluoroethylene layer in the middle, and a gold film at the bottom. Absorption curves were calculated using the multiple-reflection principle and impedance matching theory, and the obtained results were consistent with the simulation results. According to simulation results, within the range of controllable conductivity of VO _2 , the absorption rate of the as-developed structure varied from 1.5% to 99.8%, with the bandwidth extending from 0 THz to 5.19 THz. The metamaterial maintained > 75% absorption across the frequency band for incident angles up to 45°, with the absorption rate varying for different polarization angles. The as-developed metamaterial exhibited the characteristics of wide-angle incidence and polarization sensitivity and has excellent application prospects in the domains of medicine, military, and communication.https://doi.org/10.1088/2053-1591/ada41btunablebroadbandmetamaterialabsorbersvanadium dioxide |
| spellingShingle | Yuqi Zhu Vanadium dioxide-based tunable broadband metamaterial absorber in the terahertz Materials Research Express tunable broadband metamaterial absorbers vanadium dioxide |
| title | Vanadium dioxide-based tunable broadband metamaterial absorber in the terahertz |
| title_full | Vanadium dioxide-based tunable broadband metamaterial absorber in the terahertz |
| title_fullStr | Vanadium dioxide-based tunable broadband metamaterial absorber in the terahertz |
| title_full_unstemmed | Vanadium dioxide-based tunable broadband metamaterial absorber in the terahertz |
| title_short | Vanadium dioxide-based tunable broadband metamaterial absorber in the terahertz |
| title_sort | vanadium dioxide based tunable broadband metamaterial absorber in the terahertz |
| topic | tunable broadband metamaterial absorbers vanadium dioxide |
| url | https://doi.org/10.1088/2053-1591/ada41b |
| work_keys_str_mv | AT yuqizhu vanadiumdioxidebasedtunablebroadbandmetamaterialabsorberintheterahertz |