Critical coupling with graphene-based hyperbolic metamaterials
In order to effectively realize and control the critical coupling, a graphene-based hyperbolic metamaterial has been proposed to replace the absorbing thin film in the critically coupled resonance structure. Our calculations demonstrate that the critical coupling effect (near-perfect light absorptio...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2014
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/104760 http://hdl.handle.net/10220/20320 |
| _version_ | 1811692714272489472 |
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| author | Xiang, Yuanjiang Dai, Xiaoyu Guo, Jun Zhang, Han Wen, Shuangchun Tang, Dingyuan |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Xiang, Yuanjiang Dai, Xiaoyu Guo, Jun Zhang, Han Wen, Shuangchun Tang, Dingyuan |
| author_sort | Xiang, Yuanjiang |
| collection | NTU |
| description | In order to effectively realize and control the critical coupling, a graphene-based hyperbolic metamaterial has been proposed to replace the absorbing thin film in the critically coupled resonance structure. Our calculations demonstrate that the critical coupling effect (near-perfect light absorption) can be achieved at the near-infrared wavelength by using this layered structure, while the critical coupling frequency can be tuned by varying the Fermi energy level of graphene sheets via electrostatic biasing. Moreover, we show that the critical coupling frequency can be tuned by changing the thickness of the dielectric or layer number of the graphene sheets in the unit cell of the graphene-dielectric HMM. The optimization performance has also been indicated, which may offer an opportunity towards the experimental designs of high efficient graphene based critical coupling devices. |
| first_indexed | 2024-10-01T06:40:10Z |
| format | Journal Article |
| id | ntu-10356/104760 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:40:10Z |
| publishDate | 2014 |
| record_format | dspace |
| spelling | ntu-10356/1047602022-02-16T16:30:23Z Critical coupling with graphene-based hyperbolic metamaterials Xiang, Yuanjiang Dai, Xiaoyu Guo, Jun Zhang, Han Wen, Shuangchun Tang, Dingyuan School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering In order to effectively realize and control the critical coupling, a graphene-based hyperbolic metamaterial has been proposed to replace the absorbing thin film in the critically coupled resonance structure. Our calculations demonstrate that the critical coupling effect (near-perfect light absorption) can be achieved at the near-infrared wavelength by using this layered structure, while the critical coupling frequency can be tuned by varying the Fermi energy level of graphene sheets via electrostatic biasing. Moreover, we show that the critical coupling frequency can be tuned by changing the thickness of the dielectric or layer number of the graphene sheets in the unit cell of the graphene-dielectric HMM. The optimization performance has also been indicated, which may offer an opportunity towards the experimental designs of high efficient graphene based critical coupling devices. Published version 2014-08-18T02:58:21Z 2019-12-06T21:39:07Z 2014-08-18T02:58:21Z 2019-12-06T21:39:07Z 2014 2014 Journal Article Xiang, Y., Dai, X., Guo, J., Zhang, H., Wen, S., & Tang, D. (2014). Critical coupling with graphene-based hyperbolic metamaterials. Scientific Reports, 4. 2045-2322 https://hdl.handle.net/10356/104760 http://hdl.handle.net/10220/20320 10.1038/srep05483 24970717 en Scientific reports This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/ application/pdf |
| spellingShingle | DRNTU::Engineering::Electrical and electronic engineering Xiang, Yuanjiang Dai, Xiaoyu Guo, Jun Zhang, Han Wen, Shuangchun Tang, Dingyuan Critical coupling with graphene-based hyperbolic metamaterials |
| title | Critical coupling with graphene-based hyperbolic metamaterials |
| title_full | Critical coupling with graphene-based hyperbolic metamaterials |
| title_fullStr | Critical coupling with graphene-based hyperbolic metamaterials |
| title_full_unstemmed | Critical coupling with graphene-based hyperbolic metamaterials |
| title_short | Critical coupling with graphene-based hyperbolic metamaterials |
| title_sort | critical coupling with graphene based hyperbolic metamaterials |
| topic | DRNTU::Engineering::Electrical and electronic engineering |
| url | https://hdl.handle.net/10356/104760 http://hdl.handle.net/10220/20320 |
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