A triple-band terahertz metamaterial absorber based on buck Dirac semimetals
In this paper, a triple-band terahertz metamaterial absorber (MA) based on buck Dirac semimetals (BDSs) is proposed, which consists of a windmill-shaped element in a square ring layer, a dielectric layer, and a BDSs layer. The MA unit cell is investigated at normal and oblique incidence angle for bo...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2019-09-01
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| Series: | Results in Physics |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S221137971931157X |
| _version_ | 1818967674641711104 |
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| author | Weiwei Meng Longcheng Que Jian Lv Liwei Zhang Yun Zhou Yadong Jiang |
| author_facet | Weiwei Meng Longcheng Que Jian Lv Liwei Zhang Yun Zhou Yadong Jiang |
| author_sort | Weiwei Meng |
| collection | DOAJ |
| description | In this paper, a triple-band terahertz metamaterial absorber (MA) based on buck Dirac semimetals (BDSs) is proposed, which consists of a windmill-shaped element in a square ring layer, a dielectric layer, and a BDSs layer. The MA unit cell is investigated at normal and oblique incidence angle for both transverse electric (TE) and transverse magnetic (TM) polarizations. The simulation results show that the MA has three high absorption peaks at 0.80 THz, 1.72 THz, and 3.38 THz. The corresponding peak absorbance are 99.43%, 99.92% and 99.58%, respectively. Moreover, the absorption peaks of MA can be tuned by adjusting the Fermi energy of the BDSs. And the density of electric field, the magnetic field, and surface current distributions of the MA are given to reveal the absorption mechanism. According to the simulation results, the designed MA not only has high absorbance, but also insensitive to polarizations. Hence it is favorable for various applications, such as terahertz detecting, radar stealth and bio-chemical sensor. Keywords: BDSs, Terahertz, Perfect absorber, Polarization-independent |
| first_indexed | 2024-12-20T13:52:33Z |
| format | Article |
| id | doaj.art-00a33978f2884490ac26c1e29c320ed2 |
| institution | Directory Open Access Journal |
| issn | 2211-3797 |
| language | English |
| last_indexed | 2024-12-20T13:52:33Z |
| publishDate | 2019-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj.art-00a33978f2884490ac26c1e29c320ed22022-12-21T19:38:29ZengElsevierResults in Physics2211-37972019-09-0114A triple-band terahertz metamaterial absorber based on buck Dirac semimetalsWeiwei Meng0Longcheng Que1Jian Lv2Liwei Zhang3Yun Zhou4Yadong Jiang5State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, ChinaState Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China; Corresponding authors.State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China; Corresponding authors.School of Physics & Electronic Information Engineering, Henan Polytechnic University, Jiaozuo 454000, ChinaState Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, ChinaState Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, ChinaIn this paper, a triple-band terahertz metamaterial absorber (MA) based on buck Dirac semimetals (BDSs) is proposed, which consists of a windmill-shaped element in a square ring layer, a dielectric layer, and a BDSs layer. The MA unit cell is investigated at normal and oblique incidence angle for both transverse electric (TE) and transverse magnetic (TM) polarizations. The simulation results show that the MA has three high absorption peaks at 0.80 THz, 1.72 THz, and 3.38 THz. The corresponding peak absorbance are 99.43%, 99.92% and 99.58%, respectively. Moreover, the absorption peaks of MA can be tuned by adjusting the Fermi energy of the BDSs. And the density of electric field, the magnetic field, and surface current distributions of the MA are given to reveal the absorption mechanism. According to the simulation results, the designed MA not only has high absorbance, but also insensitive to polarizations. Hence it is favorable for various applications, such as terahertz detecting, radar stealth and bio-chemical sensor. Keywords: BDSs, Terahertz, Perfect absorber, Polarization-independenthttp://www.sciencedirect.com/science/article/pii/S221137971931157X |
| spellingShingle | Weiwei Meng Longcheng Que Jian Lv Liwei Zhang Yun Zhou Yadong Jiang A triple-band terahertz metamaterial absorber based on buck Dirac semimetals Results in Physics |
| title | A triple-band terahertz metamaterial absorber based on buck Dirac semimetals |
| title_full | A triple-band terahertz metamaterial absorber based on buck Dirac semimetals |
| title_fullStr | A triple-band terahertz metamaterial absorber based on buck Dirac semimetals |
| title_full_unstemmed | A triple-band terahertz metamaterial absorber based on buck Dirac semimetals |
| title_short | A triple-band terahertz metamaterial absorber based on buck Dirac semimetals |
| title_sort | triple band terahertz metamaterial absorber based on buck dirac semimetals |
| url | http://www.sciencedirect.com/science/article/pii/S221137971931157X |
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