Design of tunable dual-band terahertz perfect absorber base on graphene
In this paper, a novel tunable dual-band graphene-based perfect absorber which features a three-layer structure consisting of a monolayer graphene sheet and a metallic mirror separated by a thin Si layer with circular microcavity array is designed and systematically investigated. The simulation resu...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-09-01
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| Series: | Results in Physics |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211379722005046 |
| _version_ | 1828357741339475968 |
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| author | Fei Liu Miao He Zhenghua Dong Yunji Wang Bo Ni |
| author_facet | Fei Liu Miao He Zhenghua Dong Yunji Wang Bo Ni |
| author_sort | Fei Liu |
| collection | DOAJ |
| description | In this paper, a novel tunable dual-band graphene-based perfect absorber which features a three-layer structure consisting of a monolayer graphene sheet and a metallic mirror separated by a thin Si layer with circular microcavity array is designed and systematically investigated. The simulation results show that the two perfect absorption peaks (99.7% and 99.5%) are achieved at 4.13 and 4.38 THz. The two resonance modes are caused by different electric and magnetic field distributions, resulting in different tuning properties. The absorption peaks could be tuned by adjusting the chemical potential of the monolayer graphene. In addition, the influences of the structural parameters such as period, thickness of the Si layer, depth and radius of the circular microcavity on the absorption characteristics of the absorber have been studied and presented. |
| first_indexed | 2024-04-14T03:20:13Z |
| format | Article |
| id | doaj.art-ad1933f620534640a634bb86d71000ef |
| institution | Directory Open Access Journal |
| issn | 2211-3797 |
| language | English |
| last_indexed | 2024-04-14T03:20:13Z |
| publishDate | 2022-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj.art-ad1933f620534640a634bb86d71000ef2022-12-22T02:15:20ZengElsevierResults in Physics2211-37972022-09-0140105860Design of tunable dual-band terahertz perfect absorber base on grapheneFei Liu0Miao He1Zhenghua Dong2Yunji Wang3Bo Ni4School of Electronics and Information Engineering, Jinling Institute of Technology, Nanjing 211169, China; Corresponding author.School of Electronics and Information Engineering, Jinling Institute of Technology, Nanjing 211169, ChinaSchool of Electronics and Information Engineering, Jinling Institute of Technology, Nanjing 211169, ChinaSchool of Network and Communication Engineering, Jinling Institute of Technology, Nanjing 211169, ChinaJiangsu Key Laboratory of Meteorological Observation and Information Processing, Nanjing University of Information Science and Technology, Nanjing 210044, ChinaIn this paper, a novel tunable dual-band graphene-based perfect absorber which features a three-layer structure consisting of a monolayer graphene sheet and a metallic mirror separated by a thin Si layer with circular microcavity array is designed and systematically investigated. The simulation results show that the two perfect absorption peaks (99.7% and 99.5%) are achieved at 4.13 and 4.38 THz. The two resonance modes are caused by different electric and magnetic field distributions, resulting in different tuning properties. The absorption peaks could be tuned by adjusting the chemical potential of the monolayer graphene. In addition, the influences of the structural parameters such as period, thickness of the Si layer, depth and radius of the circular microcavity on the absorption characteristics of the absorber have been studied and presented.http://www.sciencedirect.com/science/article/pii/S2211379722005046TerahertzGraphenePerfect absorber |
| spellingShingle | Fei Liu Miao He Zhenghua Dong Yunji Wang Bo Ni Design of tunable dual-band terahertz perfect absorber base on graphene Results in Physics Terahertz Graphene Perfect absorber |
| title | Design of tunable dual-band terahertz perfect absorber base on graphene |
| title_full | Design of tunable dual-band terahertz perfect absorber base on graphene |
| title_fullStr | Design of tunable dual-band terahertz perfect absorber base on graphene |
| title_full_unstemmed | Design of tunable dual-band terahertz perfect absorber base on graphene |
| title_short | Design of tunable dual-band terahertz perfect absorber base on graphene |
| title_sort | design of tunable dual band terahertz perfect absorber base on graphene |
| topic | Terahertz Graphene Perfect absorber |
| url | http://www.sciencedirect.com/science/article/pii/S2211379722005046 |
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