Cargando…
A Tunable Terahertz Absorber Based on Double-Layer Patterned Graphene Metamaterials
Graphene is widely used in tunable photonic devices due to its numerous exotic and exceptional properties that are not found in conventional materials, such as high electron mobility, ultra-thin width, ease of integration and good tunability. In this paper, we propose a terahertz metamaterial absorb...
Autores principales: | , , , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10254857/ https://www.ncbi.nlm.nih.gov/pubmed/37297298 http://dx.doi.org/10.3390/ma16114166 |
_version_ | 1785056741263671296 |
---|---|
author | Tang, Xin Jia, Haoduo Liu, Luyang Li, Ming Wu, Dai Zhou, Kui Li, Peng Tian, Langyu Yang, Dingyu Wang, Weijun |
author_facet | Tang, Xin Jia, Haoduo Liu, Luyang Li, Ming Wu, Dai Zhou, Kui Li, Peng Tian, Langyu Yang, Dingyu Wang, Weijun |
author_sort | Tang, Xin |
collection | PubMed |
description | Graphene is widely used in tunable photonic devices due to its numerous exotic and exceptional properties that are not found in conventional materials, such as high electron mobility, ultra-thin width, ease of integration and good tunability. In this paper, we propose a terahertz metamaterial absorber that is based on patterned graphene, which consists of stacked graphene disk layers, open ring graphene pattern layers and metal bottom layers, all separated by insulating dielectric layers. Simulation results showed that the designed absorber achieved almost perfect broadband absorption at 0.53–1.50 THz and exhibited polarization-insensitive and angle-insensitive characteristics. In addition, the absorption characteristics of the absorber can be adjusted by changing the Fermi energy of graphene and the geometrical parameters of the structure. The above results indicate that the designed absorber can be applied to photodetectors, photosensors and optoelectronic devices. |
format | Online Article Text |
id | pubmed-10254857 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-102548572023-06-10 A Tunable Terahertz Absorber Based on Double-Layer Patterned Graphene Metamaterials Tang, Xin Jia, Haoduo Liu, Luyang Li, Ming Wu, Dai Zhou, Kui Li, Peng Tian, Langyu Yang, Dingyu Wang, Weijun Materials (Basel) Article Graphene is widely used in tunable photonic devices due to its numerous exotic and exceptional properties that are not found in conventional materials, such as high electron mobility, ultra-thin width, ease of integration and good tunability. In this paper, we propose a terahertz metamaterial absorber that is based on patterned graphene, which consists of stacked graphene disk layers, open ring graphene pattern layers and metal bottom layers, all separated by insulating dielectric layers. Simulation results showed that the designed absorber achieved almost perfect broadband absorption at 0.53–1.50 THz and exhibited polarization-insensitive and angle-insensitive characteristics. In addition, the absorption characteristics of the absorber can be adjusted by changing the Fermi energy of graphene and the geometrical parameters of the structure. The above results indicate that the designed absorber can be applied to photodetectors, photosensors and optoelectronic devices. MDPI 2023-06-02 /pmc/articles/PMC10254857/ /pubmed/37297298 http://dx.doi.org/10.3390/ma16114166 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Tang, Xin Jia, Haoduo Liu, Luyang Li, Ming Wu, Dai Zhou, Kui Li, Peng Tian, Langyu Yang, Dingyu Wang, Weijun A Tunable Terahertz Absorber Based on Double-Layer Patterned Graphene Metamaterials |
title | A Tunable Terahertz Absorber Based on Double-Layer Patterned Graphene Metamaterials |
title_full | A Tunable Terahertz Absorber Based on Double-Layer Patterned Graphene Metamaterials |
title_fullStr | A Tunable Terahertz Absorber Based on Double-Layer Patterned Graphene Metamaterials |
title_full_unstemmed | A Tunable Terahertz Absorber Based on Double-Layer Patterned Graphene Metamaterials |
title_short | A Tunable Terahertz Absorber Based on Double-Layer Patterned Graphene Metamaterials |
title_sort | tunable terahertz absorber based on double-layer patterned graphene metamaterials |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10254857/ https://www.ncbi.nlm.nih.gov/pubmed/37297298 http://dx.doi.org/10.3390/ma16114166 |
work_keys_str_mv | AT tangxin atunableterahertzabsorberbasedondoublelayerpatternedgraphenemetamaterials AT jiahaoduo atunableterahertzabsorberbasedondoublelayerpatternedgraphenemetamaterials AT liuluyang atunableterahertzabsorberbasedondoublelayerpatternedgraphenemetamaterials AT liming atunableterahertzabsorberbasedondoublelayerpatternedgraphenemetamaterials AT wudai atunableterahertzabsorberbasedondoublelayerpatternedgraphenemetamaterials AT zhoukui atunableterahertzabsorberbasedondoublelayerpatternedgraphenemetamaterials AT lipeng atunableterahertzabsorberbasedondoublelayerpatternedgraphenemetamaterials AT tianlangyu atunableterahertzabsorberbasedondoublelayerpatternedgraphenemetamaterials AT yangdingyu atunableterahertzabsorberbasedondoublelayerpatternedgraphenemetamaterials AT wangweijun atunableterahertzabsorberbasedondoublelayerpatternedgraphenemetamaterials AT tangxin tunableterahertzabsorberbasedondoublelayerpatternedgraphenemetamaterials AT jiahaoduo tunableterahertzabsorberbasedondoublelayerpatternedgraphenemetamaterials AT liuluyang tunableterahertzabsorberbasedondoublelayerpatternedgraphenemetamaterials AT liming tunableterahertzabsorberbasedondoublelayerpatternedgraphenemetamaterials AT wudai tunableterahertzabsorberbasedondoublelayerpatternedgraphenemetamaterials AT zhoukui tunableterahertzabsorberbasedondoublelayerpatternedgraphenemetamaterials AT lipeng tunableterahertzabsorberbasedondoublelayerpatternedgraphenemetamaterials AT tianlangyu tunableterahertzabsorberbasedondoublelayerpatternedgraphenemetamaterials AT yangdingyu tunableterahertzabsorberbasedondoublelayerpatternedgraphenemetamaterials AT wangweijun tunableterahertzabsorberbasedondoublelayerpatternedgraphenemetamaterials |