Versatile Tunable Terahertz Absorption Device Based on Bulk Dirac Semimetals and Graphene
We employed the CST Microwave Studio software 2020 and the FDID algorithm for simulation. We have designed a terahertz broadband absorber based on Dirac semimetals and graphene, achieving continuous broadband absorption with a rate exceeding 80% over the range from 7.6776 to 9.172 THz. This broadban...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-02-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/30/5/999 |
| _version_ | 1826531554904506368 |
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| author | Jie Zhou Xin Sun Jun Xu Shiyue Wu Kaili Jin Yongjian Tang Zao Yi Yougen Yi |
| author_facet | Jie Zhou Xin Sun Jun Xu Shiyue Wu Kaili Jin Yongjian Tang Zao Yi Yougen Yi |
| author_sort | Jie Zhou |
| collection | DOAJ |
| description | We employed the CST Microwave Studio software 2020 and the FDID algorithm for simulation. We have designed a terahertz broadband absorber based on Dirac semimetals and graphene, achieving continuous broadband absorption with a rate exceeding 80% over the range from 7.6776 to 9.172 THz. This broadband absorber features two independent tuning modes, utilizing graphene and Dirac semimetals, and exhibits strong electromagnetic adaptability. Furthermore, we conducted an in-depth analysis of the physical mechanisms underlying the high absorption in these absorbers using impedance matching theory and localized surface plasmon resonance (LSPR) theory. Variations in the dielectric constants of different dielectric layers and the relaxation time of graphene can also modulate the absorption rate. In summary, our proposed terahertz broadband absorber, employing two distinct tunable materials, enhances the device’s flexibility and environmental adaptability, offering promising prospects for wideband absorption applications. |
| first_indexed | 2025-03-14T01:37:12Z |
| format | Article |
| id | doaj.art-d4aa9964baad4042a03281ecd411fc1e |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2025-03-14T01:37:12Z |
| publishDate | 2025-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-d4aa9964baad4042a03281ecd411fc1e2025-03-12T13:57:18ZengMDPI AGMolecules1420-30492025-02-0130599910.3390/molecules30050999Versatile Tunable Terahertz Absorption Device Based on Bulk Dirac Semimetals and GrapheneJie Zhou0Xin Sun1Jun Xu2Shiyue Wu3Kaili Jin4Yongjian Tang5Zao Yi6Yougen Yi7School of Electronic Information and Electrical Engineering, Chengdu University, Chengdu 610100, ChinaCollege of Urban Construction, Zhejiang Shuren University, Hangzhou 310015, ChinaInstitute of Guizhou Aerospace Measuring and Testing Technology, Guiyang 550009, ChinaInstitute of Guizhou Aerospace Measuring and Testing Technology, Guiyang 550009, ChinaInstitute of Guizhou Aerospace Measuring and Testing Technology, Guiyang 550009, ChinaJoint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang 621010, ChinaJoint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang 621010, ChinaCollege of Physics, Central South University, Changsha 410083, ChinaWe employed the CST Microwave Studio software 2020 and the FDID algorithm for simulation. We have designed a terahertz broadband absorber based on Dirac semimetals and graphene, achieving continuous broadband absorption with a rate exceeding 80% over the range from 7.6776 to 9.172 THz. This broadband absorber features two independent tuning modes, utilizing graphene and Dirac semimetals, and exhibits strong electromagnetic adaptability. Furthermore, we conducted an in-depth analysis of the physical mechanisms underlying the high absorption in these absorbers using impedance matching theory and localized surface plasmon resonance (LSPR) theory. Variations in the dielectric constants of different dielectric layers and the relaxation time of graphene can also modulate the absorption rate. In summary, our proposed terahertz broadband absorber, employing two distinct tunable materials, enhances the device’s flexibility and environmental adaptability, offering promising prospects for wideband absorption applications.https://www.mdpi.com/1420-3049/30/5/999absorbermetamaterialDirac semimetalgrapheneterahertzwideband absorption |
| spellingShingle | Jie Zhou Xin Sun Jun Xu Shiyue Wu Kaili Jin Yongjian Tang Zao Yi Yougen Yi Versatile Tunable Terahertz Absorption Device Based on Bulk Dirac Semimetals and Graphene Molecules absorber metamaterial Dirac semimetal graphene terahertz wideband absorption |
| title | Versatile Tunable Terahertz Absorption Device Based on Bulk Dirac Semimetals and Graphene |
| title_full | Versatile Tunable Terahertz Absorption Device Based on Bulk Dirac Semimetals and Graphene |
| title_fullStr | Versatile Tunable Terahertz Absorption Device Based on Bulk Dirac Semimetals and Graphene |
| title_full_unstemmed | Versatile Tunable Terahertz Absorption Device Based on Bulk Dirac Semimetals and Graphene |
| title_short | Versatile Tunable Terahertz Absorption Device Based on Bulk Dirac Semimetals and Graphene |
| title_sort | versatile tunable terahertz absorption device based on bulk dirac semimetals and graphene |
| topic | absorber metamaterial Dirac semimetal graphene terahertz wideband absorption |
| url | https://www.mdpi.com/1420-3049/30/5/999 |
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