Tunable Electromagnetically Induced Transparent Window of Terahertz Metamaterials and Its Sensing Performance
The electromagnetically induced transparency effect of terahertz metamaterials exhibits excellent modulation and sensing properties, and it is critical to investigate the modulation effect of the transparent window by optimizing structural parameters. In this work, a unilateral symmetrical metamater...
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MDPI AG
2022-07-01
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| Online Access: | https://www.mdpi.com/2076-3417/12/14/7057 |
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| author | Zhenlin Wu Peiyao An Menghan Ding Yanan Qi Lin Zhang Shaoshuai Han Di Lian Changming Chen Xin Yang |
| author_facet | Zhenlin Wu Peiyao An Menghan Ding Yanan Qi Lin Zhang Shaoshuai Han Di Lian Changming Chen Xin Yang |
| author_sort | Zhenlin Wu |
| collection | DOAJ |
| description | The electromagnetically induced transparency effect of terahertz metamaterials exhibits excellent modulation and sensing properties, and it is critical to investigate the modulation effect of the transparent window by optimizing structural parameters. In this work, a unilateral symmetrical metamaterial structure based on the cut-wire resonator and the U-shaped split ring resonator is demonstrated to achieve electromagnetically induced transparency-like (EIT-like) effect. Based on the symmetrical structure, by changing the structural parameters of the split ring, an asymmetric structure metamaterial is also studied to obtain better tuning and sensing characteristics. The parameters for controlling the transparent window of the metamaterial are investigated in both passive and active modulation modes. In addition, the metamaterial structure based on the cut-wire resonator, unilateral symmetric and asymmetric configurations are investigated for high performance refractive index sensing purposes, and it is found that the first two metamaterial structures can achieve sensitivity responses of 63.6 GHz/RIU and 84.4 GHz/RIU, respectively, while the asymmetric metamaterial is up to 102.3 GHz/RIU. The high sensitivity frequency response of the proposed metamaterial structures makes them good candidates for various chemical and biomedical sensing applications. |
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| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T10:22:50Z |
| publishDate | 2022-07-01 |
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| spelling | doaj.art-0a85abea2f44487784ca7bf0b212a9ce2023-12-01T21:51:23ZengMDPI AGApplied Sciences2076-34172022-07-011214705710.3390/app12147057Tunable Electromagnetically Induced Transparent Window of Terahertz Metamaterials and Its Sensing PerformanceZhenlin Wu0Peiyao An1Menghan Ding2Yanan Qi3Lin Zhang4Shaoshuai Han5Di Lian6Changming Chen7Xin Yang8School of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian 116024, ChinaSchool of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian 116024, ChinaSchool of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian 116024, ChinaSchool of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian 116024, ChinaSchool of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian 116024, ChinaSchool of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian 116024, ChinaSchool of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian 116024, ChinaState Key Laboratory of Optoelectronic Integration, College Electronic Science & Engineering, Jilin University, Changchun 130012, ChinaDepartment of Electrical and Electronics Engineering, School of Engineering, Cardiff University, Cardiff CF10 3AT, UKThe electromagnetically induced transparency effect of terahertz metamaterials exhibits excellent modulation and sensing properties, and it is critical to investigate the modulation effect of the transparent window by optimizing structural parameters. In this work, a unilateral symmetrical metamaterial structure based on the cut-wire resonator and the U-shaped split ring resonator is demonstrated to achieve electromagnetically induced transparency-like (EIT-like) effect. Based on the symmetrical structure, by changing the structural parameters of the split ring, an asymmetric structure metamaterial is also studied to obtain better tuning and sensing characteristics. The parameters for controlling the transparent window of the metamaterial are investigated in both passive and active modulation modes. In addition, the metamaterial structure based on the cut-wire resonator, unilateral symmetric and asymmetric configurations are investigated for high performance refractive index sensing purposes, and it is found that the first two metamaterial structures can achieve sensitivity responses of 63.6 GHz/RIU and 84.4 GHz/RIU, respectively, while the asymmetric metamaterial is up to 102.3 GHz/RIU. The high sensitivity frequency response of the proposed metamaterial structures makes them good candidates for various chemical and biomedical sensing applications.https://www.mdpi.com/2076-3417/12/14/7057terahertzmetamaterialelectromagnetically induced transparency-like effectrefractive index sensing |
| spellingShingle | Zhenlin Wu Peiyao An Menghan Ding Yanan Qi Lin Zhang Shaoshuai Han Di Lian Changming Chen Xin Yang Tunable Electromagnetically Induced Transparent Window of Terahertz Metamaterials and Its Sensing Performance Applied Sciences terahertz metamaterial electromagnetically induced transparency-like effect refractive index sensing |
| title | Tunable Electromagnetically Induced Transparent Window of Terahertz Metamaterials and Its Sensing Performance |
| title_full | Tunable Electromagnetically Induced Transparent Window of Terahertz Metamaterials and Its Sensing Performance |
| title_fullStr | Tunable Electromagnetically Induced Transparent Window of Terahertz Metamaterials and Its Sensing Performance |
| title_full_unstemmed | Tunable Electromagnetically Induced Transparent Window of Terahertz Metamaterials and Its Sensing Performance |
| title_short | Tunable Electromagnetically Induced Transparent Window of Terahertz Metamaterials and Its Sensing Performance |
| title_sort | tunable electromagnetically induced transparent window of terahertz metamaterials and its sensing performance |
| topic | terahertz metamaterial electromagnetically induced transparency-like effect refractive index sensing |
| url | https://www.mdpi.com/2076-3417/12/14/7057 |
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