Ultrahigh-Q Tunable Terahertz Absorber Based on Bulk Dirac Semimetal with Surface Lattice Resonance
In this paper, we present an easy-to-implement metamaterial absorber based on bulk Dirac semimetal (BDS). The proposed device not only obtains an ultrahigh quality factor (<i>Q</i>-factor) of 4133 and dynamic adjustability at high absorption, but also exhibits an excellent sensing perfor...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-12-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/9/1/22 |
| _version_ | 1797491058489163776 |
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| author | Zhiyong Wang Yanghong Ou Shiyu Wang Yanzi Meng Zi Wang Xiang Zhai Lingling Wang Shengxuan Xia |
| author_facet | Zhiyong Wang Yanghong Ou Shiyu Wang Yanzi Meng Zi Wang Xiang Zhai Lingling Wang Shengxuan Xia |
| author_sort | Zhiyong Wang |
| collection | DOAJ |
| description | In this paper, we present an easy-to-implement metamaterial absorber based on bulk Dirac semimetal (BDS). The proposed device not only obtains an ultrahigh quality factor (<i>Q</i>-factor) of 4133 and dynamic adjustability at high absorption, but also exhibits an excellent sensing performance with a figure of merit (<i>FOM</i>) of 4125. These outstanding properties are explained by the surface lattice resonance, which allows us to improve the quality factor significantly and control resonance wavelength precisely by tuning the unit cell periods, Fermi energy of the BDS, and structural parameters. Our findings can provide high-performance applications in terahertz filtering, detection, and biochemical sensing. |
| first_indexed | 2024-03-10T00:41:55Z |
| format | Article |
| id | doaj.art-3415a786a4af48149576dcaa65c48d78 |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-10T00:41:55Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-3415a786a4af48149576dcaa65c48d782023-11-23T15:06:10ZengMDPI AGPhotonics2304-67322021-12-01912210.3390/photonics9010022Ultrahigh-Q Tunable Terahertz Absorber Based on Bulk Dirac Semimetal with Surface Lattice ResonanceZhiyong Wang0Yanghong Ou1Shiyu Wang2Yanzi Meng3Zi Wang4Xiang Zhai5Lingling Wang6Shengxuan Xia7School of Physics and Electronics, Hunan University, Changsha 410082, ChinaSchool of Physics and Electronics, Hunan University, Changsha 410082, ChinaSchool of Physics and Electronics, Hunan University, Changsha 410082, ChinaSchool of Physics and Electronics, Hunan University, Changsha 410082, ChinaSchool of Physics and Electronics, Hunan University, Changsha 410082, ChinaSchool of Physics and Electronics, Hunan University, Changsha 410082, ChinaSchool of Physics and Electronics, Hunan University, Changsha 410082, ChinaSchool of Physics and Electronics, Hunan University, Changsha 410082, ChinaIn this paper, we present an easy-to-implement metamaterial absorber based on bulk Dirac semimetal (BDS). The proposed device not only obtains an ultrahigh quality factor (<i>Q</i>-factor) of 4133 and dynamic adjustability at high absorption, but also exhibits an excellent sensing performance with a figure of merit (<i>FOM</i>) of 4125. These outstanding properties are explained by the surface lattice resonance, which allows us to improve the quality factor significantly and control resonance wavelength precisely by tuning the unit cell periods, Fermi energy of the BDS, and structural parameters. Our findings can provide high-performance applications in terahertz filtering, detection, and biochemical sensing.https://www.mdpi.com/2304-6732/9/1/22bulk Dirac semimetalmetamaterialsnarrowband absorptionrefractive index sensing |
| spellingShingle | Zhiyong Wang Yanghong Ou Shiyu Wang Yanzi Meng Zi Wang Xiang Zhai Lingling Wang Shengxuan Xia Ultrahigh-Q Tunable Terahertz Absorber Based on Bulk Dirac Semimetal with Surface Lattice Resonance Photonics bulk Dirac semimetal metamaterials narrowband absorption refractive index sensing |
| title | Ultrahigh-Q Tunable Terahertz Absorber Based on Bulk Dirac Semimetal with Surface Lattice Resonance |
| title_full | Ultrahigh-Q Tunable Terahertz Absorber Based on Bulk Dirac Semimetal with Surface Lattice Resonance |
| title_fullStr | Ultrahigh-Q Tunable Terahertz Absorber Based on Bulk Dirac Semimetal with Surface Lattice Resonance |
| title_full_unstemmed | Ultrahigh-Q Tunable Terahertz Absorber Based on Bulk Dirac Semimetal with Surface Lattice Resonance |
| title_short | Ultrahigh-Q Tunable Terahertz Absorber Based on Bulk Dirac Semimetal with Surface Lattice Resonance |
| title_sort | ultrahigh q tunable terahertz absorber based on bulk dirac semimetal with surface lattice resonance |
| topic | bulk Dirac semimetal metamaterials narrowband absorption refractive index sensing |
| url | https://www.mdpi.com/2304-6732/9/1/22 |
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