Reconfigurable Continuous Meta-Grating for Broadband Polarization Conversion and Perfect Absorption
As promising building blocks for functional materials and devices, metasurfaces have gained widespread attention in recent years due to their unique electromagnetic (EM) properties, as well as subwavelength footprints. However, current designs based on discrete unit cells often suffer from low worki...
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MDPI AG
2021-04-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/14/9/2212 |
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| author | Yijia Huang Tianxiao Xiao Zhengwei Xie Jie Zheng Yarong Su Weidong Chen Ke Liu Mingjun Tang Ling Li |
| author_facet | Yijia Huang Tianxiao Xiao Zhengwei Xie Jie Zheng Yarong Su Weidong Chen Ke Liu Mingjun Tang Ling Li |
| author_sort | Yijia Huang |
| collection | DOAJ |
| description | As promising building blocks for functional materials and devices, metasurfaces have gained widespread attention in recent years due to their unique electromagnetic (EM) properties, as well as subwavelength footprints. However, current designs based on discrete unit cells often suffer from low working efficiencies, narrow operation bandwidths, and fixed EM functionalities. Here, by employing the superior performance of a continuous metasurface, combined with the reconfigurable properties of a phase change material (PCM), a dual-functional meta-grating is proposed in the infrared region, which can achieve a broadband polarization conversion of over 90% when the PCM is in an amorphous state, and a perfect EM absorption larger than 91% when the PCM changes to a crystalline state. Moreover, by arranging the meta-grating to form a quasi-continuous metasurface, subsequent simulations indicated that the designed device exhibited an ultralow specular reflectivity below 10% and a tunable thermal emissivity from 14.5% to 91%. It is believed that the proposed devices with reconfigurable EM responses have great potential in the field of emissivity control and infrared camouflage. |
| first_indexed | 2024-03-10T11:57:34Z |
| format | Article |
| id | doaj.art-0d7a1b30e6834526af34aedd1524634a |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T11:57:34Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-0d7a1b30e6834526af34aedd1524634a2023-11-21T17:08:28ZengMDPI AGMaterials1996-19442021-04-01149221210.3390/ma14092212Reconfigurable Continuous Meta-Grating for Broadband Polarization Conversion and Perfect AbsorptionYijia Huang0Tianxiao Xiao1Zhengwei Xie2Jie Zheng3Yarong Su4Weidong Chen5Ke Liu6Mingjun Tang7Ling Li8College of Physics and Electronic Engineering, Sichuan Normal University, Chengdu 610101, ChinaPhysik-Department, Lehrstuhl für Funktionelle Materialien, Technische Universität München, James-Franck-Straße 1, 85748 Garching, GermanyCollege of Physics and Electronic Engineering, Sichuan Normal University, Chengdu 610101, ChinaCollege of Physics and Electronic Engineering, Sichuan Normal University, Chengdu 610101, ChinaCollege of Physics and Electronic Engineering, Sichuan Normal University, Chengdu 610101, ChinaCollege of Physics and Electronic Engineering, Sichuan Normal University, Chengdu 610101, ChinaCollege of Physics and Electronic Engineering, Sichuan Normal University, Chengdu 610101, ChinaCollege of Physics and Electronic Engineering, Sichuan Normal University, Chengdu 610101, ChinaCollege of Physics and Electronic Engineering, Sichuan Normal University, Chengdu 610101, ChinaAs promising building blocks for functional materials and devices, metasurfaces have gained widespread attention in recent years due to their unique electromagnetic (EM) properties, as well as subwavelength footprints. However, current designs based on discrete unit cells often suffer from low working efficiencies, narrow operation bandwidths, and fixed EM functionalities. Here, by employing the superior performance of a continuous metasurface, combined with the reconfigurable properties of a phase change material (PCM), a dual-functional meta-grating is proposed in the infrared region, which can achieve a broadband polarization conversion of over 90% when the PCM is in an amorphous state, and a perfect EM absorption larger than 91% when the PCM changes to a crystalline state. Moreover, by arranging the meta-grating to form a quasi-continuous metasurface, subsequent simulations indicated that the designed device exhibited an ultralow specular reflectivity below 10% and a tunable thermal emissivity from 14.5% to 91%. It is believed that the proposed devices with reconfigurable EM responses have great potential in the field of emissivity control and infrared camouflage.https://www.mdpi.com/1996-1944/14/9/2212metasurfacecontinuous structurephase change materialpolarization conversionelectromagnetic absorption |
| spellingShingle | Yijia Huang Tianxiao Xiao Zhengwei Xie Jie Zheng Yarong Su Weidong Chen Ke Liu Mingjun Tang Ling Li Reconfigurable Continuous Meta-Grating for Broadband Polarization Conversion and Perfect Absorption Materials metasurface continuous structure phase change material polarization conversion electromagnetic absorption |
| title | Reconfigurable Continuous Meta-Grating for Broadband Polarization Conversion and Perfect Absorption |
| title_full | Reconfigurable Continuous Meta-Grating for Broadband Polarization Conversion and Perfect Absorption |
| title_fullStr | Reconfigurable Continuous Meta-Grating for Broadband Polarization Conversion and Perfect Absorption |
| title_full_unstemmed | Reconfigurable Continuous Meta-Grating for Broadband Polarization Conversion and Perfect Absorption |
| title_short | Reconfigurable Continuous Meta-Grating for Broadband Polarization Conversion and Perfect Absorption |
| title_sort | reconfigurable continuous meta grating for broadband polarization conversion and perfect absorption |
| topic | metasurface continuous structure phase change material polarization conversion electromagnetic absorption |
| url | https://www.mdpi.com/1996-1944/14/9/2212 |
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