Wavelength-tunable infrared metasurfaces with chiral bound states in the continuum
Abstract In recent years, research on chiral bound states in the continuum (BIC) has surged, leading to the development of various chiral metasurfaces with narrow bandwidths by breaking of in-plane and out-of-plane symmetries. However, the ability to dynamically tune the working band remains relativ...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-01-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-024-84587-7 |
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| author | Tao Zhang Jiachen Liu Liangliang Gu Haifeng Hu Qiwen Zhan |
| author_facet | Tao Zhang Jiachen Liu Liangliang Gu Haifeng Hu Qiwen Zhan |
| author_sort | Tao Zhang |
| collection | DOAJ |
| description | Abstract In recent years, research on chiral bound states in the continuum (BIC) has surged, leading to the development of various chiral metasurfaces with narrow bandwidths by breaking of in-plane and out-of-plane symmetries. However, the ability to dynamically tune the working band remains relatively unexplored, which is valuable for chiral sensing applications. Optical phase-change materials, with tunable dielectric constants and switchable properties during phase transition, offer the potential for dynamic control of optical metasurfaces. This work demonstrates a wavelength-tunable infrared chiral metasurface by combining the phase-change material GST with chiral BIC structures. By varying the longitudinal tilt angle of the nanostructure, an infrared chiral metasurface with an extremely narrow bandwidth of chiral resonance and a CD value of over 0.8 is designed. The phase-change properties of GST enable wavelength-tunable chiral resonance without altering the structural parameters, and the influence of key structural parameters of the metasurface on the chiral resonance wavelength and CD value is analyzed. The proposed chiral BIC metasurface with phase-change materials shows promising application prospects in filter devices, chiral thermal switches, infrared imaging, and tunable chiral photonics. |
| format | Article |
| id | doaj-art-dd7040dd16d54dba8e150cb93a83f785 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-dd7040dd16d54dba8e150cb93a83f7852025-01-05T12:16:32ZengNature PortfolioScientific Reports2045-23222025-01-011511810.1038/s41598-024-84587-7Wavelength-tunable infrared metasurfaces with chiral bound states in the continuumTao Zhang0Jiachen Liu1Liangliang Gu2Haifeng Hu3Qiwen Zhan4School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and TechnologySchool of Optical-Electrical and Computer Engineering, University of Shanghai for Science and TechnologySchool of Optical-Electrical and Computer Engineering, University of Shanghai for Science and TechnologySchool of Optical-Electrical and Computer Engineering, University of Shanghai for Science and TechnologySchool of Optical-Electrical and Computer Engineering, University of Shanghai for Science and TechnologyAbstract In recent years, research on chiral bound states in the continuum (BIC) has surged, leading to the development of various chiral metasurfaces with narrow bandwidths by breaking of in-plane and out-of-plane symmetries. However, the ability to dynamically tune the working band remains relatively unexplored, which is valuable for chiral sensing applications. Optical phase-change materials, with tunable dielectric constants and switchable properties during phase transition, offer the potential for dynamic control of optical metasurfaces. This work demonstrates a wavelength-tunable infrared chiral metasurface by combining the phase-change material GST with chiral BIC structures. By varying the longitudinal tilt angle of the nanostructure, an infrared chiral metasurface with an extremely narrow bandwidth of chiral resonance and a CD value of over 0.8 is designed. The phase-change properties of GST enable wavelength-tunable chiral resonance without altering the structural parameters, and the influence of key structural parameters of the metasurface on the chiral resonance wavelength and CD value is analyzed. The proposed chiral BIC metasurface with phase-change materials shows promising application prospects in filter devices, chiral thermal switches, infrared imaging, and tunable chiral photonics.https://doi.org/10.1038/s41598-024-84587-7 |
| spellingShingle | Tao Zhang Jiachen Liu Liangliang Gu Haifeng Hu Qiwen Zhan Wavelength-tunable infrared metasurfaces with chiral bound states in the continuum Scientific Reports |
| title | Wavelength-tunable infrared metasurfaces with chiral bound states in the continuum |
| title_full | Wavelength-tunable infrared metasurfaces with chiral bound states in the continuum |
| title_fullStr | Wavelength-tunable infrared metasurfaces with chiral bound states in the continuum |
| title_full_unstemmed | Wavelength-tunable infrared metasurfaces with chiral bound states in the continuum |
| title_short | Wavelength-tunable infrared metasurfaces with chiral bound states in the continuum |
| title_sort | wavelength tunable infrared metasurfaces with chiral bound states in the continuum |
| url | https://doi.org/10.1038/s41598-024-84587-7 |
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