Programmable VO2 metasurface for terahertz wave beam steering
Summary: Programmable vanadium dioxide (VO2) metasurface is proposed at THz frequencies. The insulating and metallic states of VO2 can be switched via external electrical stimulation, resulting in the dynamical modulation of electromagnetic response. The voltages of different columns of the metasurf...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-08-01
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| Series: | iScience |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589004222010963 |
| _version_ | 1828439154487197696 |
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| author | Daquan Yang Weiguang Wang Erpeng Lv Haiming Wang Bingchao Liu Yanzhao Hou Jin-hui Chen |
| author_facet | Daquan Yang Weiguang Wang Erpeng Lv Haiming Wang Bingchao Liu Yanzhao Hou Jin-hui Chen |
| author_sort | Daquan Yang |
| collection | DOAJ |
| description | Summary: Programmable vanadium dioxide (VO2) metasurface is proposed at THz frequencies. The insulating and metallic states of VO2 can be switched via external electrical stimulation, resulting in the dynamical modulation of electromagnetic response. The voltages of different columns of the metasurface can be controlled by the field-programmable gate array, and thus the phase gradients are realized for THz beam steering. In 1-bit coding, we design periodic and nonperiodic 24 × 24 coding sequences, and achieve wide-angle beam scanning with the deflection angles from −60° to +60°. In 2-bit coding, we use two different meta-atoms to design 18 × 18 coding sequences. Compared with 1-bit coding, 2-bit coding has more degree of freedom to control the optical phase, and 3 dB diffraction efficiency is improved by generating a single deflection angle. The proposed programmable metasurfaces provide a promising platform for manipulating electromagnetic wave in 6G wireless communication. |
| first_indexed | 2024-12-10T20:18:53Z |
| format | Article |
| id | doaj.art-f0723d8e73914dd08adc649ebcf0c5a0 |
| institution | Directory Open Access Journal |
| issn | 2589-0042 |
| language | English |
| last_indexed | 2024-12-10T20:18:53Z |
| publishDate | 2022-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | iScience |
| spelling | doaj.art-f0723d8e73914dd08adc649ebcf0c5a02022-12-22T01:35:07ZengElsevieriScience2589-00422022-08-01258104824Programmable VO2 metasurface for terahertz wave beam steeringDaquan Yang0Weiguang Wang1Erpeng Lv2Haiming Wang3Bingchao Liu4Yanzhao Hou5Jin-hui Chen6School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China; State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, ChinaSchool of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, ChinaSchool of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, ChinaLenovo Research, Beijing 100094, ChinaLenovo Research, Beijing 100094, ChinaSchool of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China; National Engineering Laboratory for Mobile Network Technologies, Beijing University of Posts and Telecommunications, Beijing 100876, China; Corresponding authorInstitute of Electromagnetics and Acoustics, Xiamen University, Xiamen 361005, China; Corresponding authorSummary: Programmable vanadium dioxide (VO2) metasurface is proposed at THz frequencies. The insulating and metallic states of VO2 can be switched via external electrical stimulation, resulting in the dynamical modulation of electromagnetic response. The voltages of different columns of the metasurface can be controlled by the field-programmable gate array, and thus the phase gradients are realized for THz beam steering. In 1-bit coding, we design periodic and nonperiodic 24 × 24 coding sequences, and achieve wide-angle beam scanning with the deflection angles from −60° to +60°. In 2-bit coding, we use two different meta-atoms to design 18 × 18 coding sequences. Compared with 1-bit coding, 2-bit coding has more degree of freedom to control the optical phase, and 3 dB diffraction efficiency is improved by generating a single deflection angle. The proposed programmable metasurfaces provide a promising platform for manipulating electromagnetic wave in 6G wireless communication.http://www.sciencedirect.com/science/article/pii/S2589004222010963PhotonicsRadiation physicsTheoretical physics |
| spellingShingle | Daquan Yang Weiguang Wang Erpeng Lv Haiming Wang Bingchao Liu Yanzhao Hou Jin-hui Chen Programmable VO2 metasurface for terahertz wave beam steering iScience Photonics Radiation physics Theoretical physics |
| title | Programmable VO2 metasurface for terahertz wave beam steering |
| title_full | Programmable VO2 metasurface for terahertz wave beam steering |
| title_fullStr | Programmable VO2 metasurface for terahertz wave beam steering |
| title_full_unstemmed | Programmable VO2 metasurface for terahertz wave beam steering |
| title_short | Programmable VO2 metasurface for terahertz wave beam steering |
| title_sort | programmable vo2 metasurface for terahertz wave beam steering |
| topic | Photonics Radiation physics Theoretical physics |
| url | http://www.sciencedirect.com/science/article/pii/S2589004222010963 |
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