Tunable Perfect Absorber of Graphene Metamaterial in the Terahertz Band and Its Sensing Properties
Herein, a dual‐band tunable ideal absorber based on graphene array, and the dynamic tuning performance of the perfect absorber in the terahertz band and its sensing properties based on graphene metamaterials are studied. The absorber shows two perfect absorption peaks at 1.01 and 1.86 THz, with an a...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley-VCH
2022-04-01
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| Series: | Advanced Photonics Research |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/adpr.202100291 |
| _version_ | 1828837400326963200 |
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| author | Jun Zhu Jinguo Yin Changsong Wu |
| author_facet | Jun Zhu Jinguo Yin Changsong Wu |
| author_sort | Jun Zhu |
| collection | DOAJ |
| description | Herein, a dual‐band tunable ideal absorber based on graphene array, and the dynamic tuning performance of the perfect absorber in the terahertz band and its sensing properties based on graphene metamaterials are studied. The absorber shows two perfect absorption peaks at 1.01 and 1.86 THz, with an absorbance of 99.5% and 99.9%, respectively. With an elevation angle in the range of 0°–30° and a frequency in the range of 0.971–1.100 THz or 1.794–1.897 THz, the absorber designed herein can achieve an absorbance greater than 90%. Owing to the superior properties of graphene, dynamic tuning of the absorption frequency band, absorption bandwidth, and relative bandwidth of the absorber can be achieved by adjusting the Fermi level of graphene. In addition, adjusting the relaxation time realizes dynamic tuning of the absorption bandwidth and the absorbance with constant resonant frequency and fixed geometric parameters. Moreover, the sensitivity of the absorber reaches 492.5 GHz/RIU, which can achieve the sensing resolution required for the resonance frequency. This research provides a new concept for the development of high‐performance terahertz devices. |
| first_indexed | 2024-12-12T18:41:42Z |
| format | Article |
| id | doaj.art-6b7bf8f000e5495ab9d1ad3e938f7c2f |
| institution | Directory Open Access Journal |
| issn | 2699-9293 |
| language | English |
| last_indexed | 2024-12-12T18:41:42Z |
| publishDate | 2022-04-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Photonics Research |
| spelling | doaj.art-6b7bf8f000e5495ab9d1ad3e938f7c2f2022-12-22T00:15:38ZengWiley-VCHAdvanced Photonics Research2699-92932022-04-0134n/an/a10.1002/adpr.202100291Tunable Perfect Absorber of Graphene Metamaterial in the Terahertz Band and Its Sensing PropertiesJun Zhu0Jinguo Yin1Changsong Wu2College of Electronic Engineering Guangxi Normal University Guilin 541004 P. R. ChinaCollege of Electronic Engineering Guangxi Normal University Guilin 541004 P. R. ChinaCollege of Electronic Engineering Guangxi Normal University Guilin 541004 P. R. ChinaHerein, a dual‐band tunable ideal absorber based on graphene array, and the dynamic tuning performance of the perfect absorber in the terahertz band and its sensing properties based on graphene metamaterials are studied. The absorber shows two perfect absorption peaks at 1.01 and 1.86 THz, with an absorbance of 99.5% and 99.9%, respectively. With an elevation angle in the range of 0°–30° and a frequency in the range of 0.971–1.100 THz or 1.794–1.897 THz, the absorber designed herein can achieve an absorbance greater than 90%. Owing to the superior properties of graphene, dynamic tuning of the absorption frequency band, absorption bandwidth, and relative bandwidth of the absorber can be achieved by adjusting the Fermi level of graphene. In addition, adjusting the relaxation time realizes dynamic tuning of the absorption bandwidth and the absorbance with constant resonant frequency and fixed geometric parameters. Moreover, the sensitivity of the absorber reaches 492.5 GHz/RIU, which can achieve the sensing resolution required for the resonance frequency. This research provides a new concept for the development of high‐performance terahertz devices.https://doi.org/10.1002/adpr.202100291graphene metamaterialsensingterahertz bandtunable perfect absorber |
| spellingShingle | Jun Zhu Jinguo Yin Changsong Wu Tunable Perfect Absorber of Graphene Metamaterial in the Terahertz Band and Its Sensing Properties Advanced Photonics Research graphene metamaterial sensing terahertz band tunable perfect absorber |
| title | Tunable Perfect Absorber of Graphene Metamaterial in the Terahertz Band and Its Sensing Properties |
| title_full | Tunable Perfect Absorber of Graphene Metamaterial in the Terahertz Band and Its Sensing Properties |
| title_fullStr | Tunable Perfect Absorber of Graphene Metamaterial in the Terahertz Band and Its Sensing Properties |
| title_full_unstemmed | Tunable Perfect Absorber of Graphene Metamaterial in the Terahertz Band and Its Sensing Properties |
| title_short | Tunable Perfect Absorber of Graphene Metamaterial in the Terahertz Band and Its Sensing Properties |
| title_sort | tunable perfect absorber of graphene metamaterial in the terahertz band and its sensing properties |
| topic | graphene metamaterial sensing terahertz band tunable perfect absorber |
| url | https://doi.org/10.1002/adpr.202100291 |
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