Flexible terahertz beam manipulation and convolution operations in light-controllable digital coding metasurfaces
Summary: The development of coding metasurface opens an important development direction for beam modulator components. However, the lack of dynamic tunability is a major obstacle to the development and practicality of terahertz coding metasurface. In this work, we design and implement a wireless opt...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-02-01
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| Series: | iScience |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589004224029158 |
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| author | Min Jia Chao Zhao Hui Wang Weiran Sun Yuncheng Lu |
| author_facet | Min Jia Chao Zhao Hui Wang Weiran Sun Yuncheng Lu |
| author_sort | Min Jia |
| collection | DOAJ |
| description | Summary: The development of coding metasurface opens an important development direction for beam modulator components. However, the lack of dynamic tunability is a major obstacle to the development and practicality of terahertz coding metasurface. In this work, we design and implement a wireless optically controlled tunable coding metasurface by integrating photosensitive silicon into the metasurface, which realizes the ultra-fast dynamic switching effect of terahertz beam and dynamic convolution operation of 2-bit coding metasurface. We also achieve dynamic modulation of vortex electromagnetic waves based on wireless light-controllable coding metasurfaces. And the genetic algorithm is used to reverse design the array arrangement of the coding metasurface to achieve terahertz broadband radar scattering cross-section reduction. The proposed optically controlled dynamic metasurface developed in this study has the potential to create non-contact metasurfaces, thereby making it a valuable tool for future practical applications. |
| format | Article |
| id | doaj-art-9b54d30d2920499db9070c74e8544fdf |
| institution | Kabale University |
| issn | 2589-0042 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | iScience |
| spelling | doaj-art-9b54d30d2920499db9070c74e8544fdf2025-01-23T05:27:35ZengElsevieriScience2589-00422025-02-01282111688Flexible terahertz beam manipulation and convolution operations in light-controllable digital coding metasurfacesMin Jia0Chao Zhao1Hui Wang2Weiran Sun3Yuncheng Lu4Communication Research Center, School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin 150080, China; Corresponding authorCommunication Research Center, School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin 150080, ChinaCommunication Research Center, School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin 150080, ChinaCommunication Research Center, School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin 150080, ChinaCommunication Research Center, School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin 150080, ChinaSummary: The development of coding metasurface opens an important development direction for beam modulator components. However, the lack of dynamic tunability is a major obstacle to the development and practicality of terahertz coding metasurface. In this work, we design and implement a wireless optically controlled tunable coding metasurface by integrating photosensitive silicon into the metasurface, which realizes the ultra-fast dynamic switching effect of terahertz beam and dynamic convolution operation of 2-bit coding metasurface. We also achieve dynamic modulation of vortex electromagnetic waves based on wireless light-controllable coding metasurfaces. And the genetic algorithm is used to reverse design the array arrangement of the coding metasurface to achieve terahertz broadband radar scattering cross-section reduction. The proposed optically controlled dynamic metasurface developed in this study has the potential to create non-contact metasurfaces, thereby making it a valuable tool for future practical applications.http://www.sciencedirect.com/science/article/pii/S2589004224029158Natural sciencesPhysicsApplied sciences |
| spellingShingle | Min Jia Chao Zhao Hui Wang Weiran Sun Yuncheng Lu Flexible terahertz beam manipulation and convolution operations in light-controllable digital coding metasurfaces iScience Natural sciences Physics Applied sciences |
| title | Flexible terahertz beam manipulation and convolution operations in light-controllable digital coding metasurfaces |
| title_full | Flexible terahertz beam manipulation and convolution operations in light-controllable digital coding metasurfaces |
| title_fullStr | Flexible terahertz beam manipulation and convolution operations in light-controllable digital coding metasurfaces |
| title_full_unstemmed | Flexible terahertz beam manipulation and convolution operations in light-controllable digital coding metasurfaces |
| title_short | Flexible terahertz beam manipulation and convolution operations in light-controllable digital coding metasurfaces |
| title_sort | flexible terahertz beam manipulation and convolution operations in light controllable digital coding metasurfaces |
| topic | Natural sciences Physics Applied sciences |
| url | http://www.sciencedirect.com/science/article/pii/S2589004224029158 |
| work_keys_str_mv | AT minjia flexibleterahertzbeammanipulationandconvolutionoperationsinlightcontrollabledigitalcodingmetasurfaces AT chaozhao flexibleterahertzbeammanipulationandconvolutionoperationsinlightcontrollabledigitalcodingmetasurfaces AT huiwang flexibleterahertzbeammanipulationandconvolutionoperationsinlightcontrollabledigitalcodingmetasurfaces AT weiransun flexibleterahertzbeammanipulationandconvolutionoperationsinlightcontrollabledigitalcodingmetasurfaces AT yunchenglu flexibleterahertzbeammanipulationandconvolutionoperationsinlightcontrollabledigitalcodingmetasurfaces |