Investigation of Multiple High Quality-Factor Fano Resonances in Asymmetric Nanopillar Arrays for Optical Sensing
A novel asymmetric all-dielectric metasurface supporting multiple Fano resonances with high quality-factor through the excitation of quasi-bound states in the continuum is theoretically investigated. It is demonstrated that two resonances in the near-infrared wavelength are excited by the symmetry-p...
| Main Authors: | , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-01-01
|
| Series: | Photonics |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2304-6732/11/1/68 |
| _version_ | 1797342734957150208 |
|---|---|
| author | Huawei Chen Xinye Fan Wenjing Fang Shuangshuang Cao Qinghe Sun Dandan Wang Huijuan Niu Chuanchuan Li Xin Wei Chenglin Bai Santosh Kumar |
| author_facet | Huawei Chen Xinye Fan Wenjing Fang Shuangshuang Cao Qinghe Sun Dandan Wang Huijuan Niu Chuanchuan Li Xin Wei Chenglin Bai Santosh Kumar |
| author_sort | Huawei Chen |
| collection | DOAJ |
| description | A novel asymmetric all-dielectric metasurface supporting multiple Fano resonances with high quality-factor through the excitation of quasi-bound states in the continuum is theoretically investigated. It is demonstrated that two resonances in the near-infrared wavelength are excited by the symmetry-protected bound state in the continuum, which can be transformed into the electric dipole and the toroidal dipole quasi-BIC resonance with high quality-factor by breaking the symmetry of metasurface. Moreover, the sensing properties based on different liquid refractive indexes are researched theoretically. The results show that the maximum quality-factor of the Fano resonance peak is 8422, and the sensitivity can reach 402 nm/RIU, with a maximum figure of merit of 2400 RIU<sup>−1</sup>. This research is believed to further promote the development of optical sensing and nonlinear optics. |
| first_indexed | 2024-03-08T10:37:35Z |
| format | Article |
| id | doaj.art-86b4bcf9e0f64c57904ca60b87a84d20 |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-08T10:37:35Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-86b4bcf9e0f64c57904ca60b87a84d202024-01-26T18:09:52ZengMDPI AGPhotonics2304-67322024-01-011116810.3390/photonics11010068Investigation of Multiple High Quality-Factor Fano Resonances in Asymmetric Nanopillar Arrays for Optical SensingHuawei Chen0Xinye Fan1Wenjing Fang2Shuangshuang Cao3Qinghe Sun4Dandan Wang5Huijuan Niu6Chuanchuan Li7Xin Wei8Chenglin Bai9Santosh Kumar10School of Physics Science and Information Engineering, Liaocheng University, Liaocheng 252000, ChinaSchool of Physics Science and Information Engineering, Liaocheng University, Liaocheng 252000, ChinaSchool of Physics Science and Information Engineering, Liaocheng University, Liaocheng 252000, ChinaSchool of Physics Science and Information Engineering, Liaocheng University, Liaocheng 252000, ChinaSchool of Physics Science and Information Engineering, Liaocheng University, Liaocheng 252000, ChinaSchool of Physics Science and Information Engineering, Liaocheng University, Liaocheng 252000, ChinaSchool of Physics Science and Information Engineering, Liaocheng University, Liaocheng 252000, ChinaInstitute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, ChinaInstitute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, ChinaSchool of Physics Science and Information Engineering, Liaocheng University, Liaocheng 252000, ChinaDepartment of Electronics and Communication Engineering, K L Deemed to be University, Guntur 522302, IndiaA novel asymmetric all-dielectric metasurface supporting multiple Fano resonances with high quality-factor through the excitation of quasi-bound states in the continuum is theoretically investigated. It is demonstrated that two resonances in the near-infrared wavelength are excited by the symmetry-protected bound state in the continuum, which can be transformed into the electric dipole and the toroidal dipole quasi-BIC resonance with high quality-factor by breaking the symmetry of metasurface. Moreover, the sensing properties based on different liquid refractive indexes are researched theoretically. The results show that the maximum quality-factor of the Fano resonance peak is 8422, and the sensitivity can reach 402 nm/RIU, with a maximum figure of merit of 2400 RIU<sup>−1</sup>. This research is believed to further promote the development of optical sensing and nonlinear optics.https://www.mdpi.com/2304-6732/11/1/68all-dielectrichigh Q-factormetasurface |
| spellingShingle | Huawei Chen Xinye Fan Wenjing Fang Shuangshuang Cao Qinghe Sun Dandan Wang Huijuan Niu Chuanchuan Li Xin Wei Chenglin Bai Santosh Kumar Investigation of Multiple High Quality-Factor Fano Resonances in Asymmetric Nanopillar Arrays for Optical Sensing Photonics all-dielectric high Q-factor metasurface |
| title | Investigation of Multiple High Quality-Factor Fano Resonances in Asymmetric Nanopillar Arrays for Optical Sensing |
| title_full | Investigation of Multiple High Quality-Factor Fano Resonances in Asymmetric Nanopillar Arrays for Optical Sensing |
| title_fullStr | Investigation of Multiple High Quality-Factor Fano Resonances in Asymmetric Nanopillar Arrays for Optical Sensing |
| title_full_unstemmed | Investigation of Multiple High Quality-Factor Fano Resonances in Asymmetric Nanopillar Arrays for Optical Sensing |
| title_short | Investigation of Multiple High Quality-Factor Fano Resonances in Asymmetric Nanopillar Arrays for Optical Sensing |
| title_sort | investigation of multiple high quality factor fano resonances in asymmetric nanopillar arrays for optical sensing |
| topic | all-dielectric high Q-factor metasurface |
| url | https://www.mdpi.com/2304-6732/11/1/68 |
| work_keys_str_mv | AT huaweichen investigationofmultiplehighqualityfactorfanoresonancesinasymmetricnanopillararraysforopticalsensing AT xinyefan investigationofmultiplehighqualityfactorfanoresonancesinasymmetricnanopillararraysforopticalsensing AT wenjingfang investigationofmultiplehighqualityfactorfanoresonancesinasymmetricnanopillararraysforopticalsensing AT shuangshuangcao investigationofmultiplehighqualityfactorfanoresonancesinasymmetricnanopillararraysforopticalsensing AT qinghesun investigationofmultiplehighqualityfactorfanoresonancesinasymmetricnanopillararraysforopticalsensing AT dandanwang investigationofmultiplehighqualityfactorfanoresonancesinasymmetricnanopillararraysforopticalsensing AT huijuanniu investigationofmultiplehighqualityfactorfanoresonancesinasymmetricnanopillararraysforopticalsensing AT chuanchuanli investigationofmultiplehighqualityfactorfanoresonancesinasymmetricnanopillararraysforopticalsensing AT xinwei investigationofmultiplehighqualityfactorfanoresonancesinasymmetricnanopillararraysforopticalsensing AT chenglinbai investigationofmultiplehighqualityfactorfanoresonancesinasymmetricnanopillararraysforopticalsensing AT santoshkumar investigationofmultiplehighqualityfactorfanoresonancesinasymmetricnanopillararraysforopticalsensing |