Triple-Band Perfect Light Absorber Based on Hybrid Metasurface for Sensing Application
Abstract A simple design of triple-band perfect light absorber (PLA) based on hybrid metasurface in visible region has been presented in this work, which turns out to be applicable for refractive index (RI) sensing. Distinct from previous designs, the proposed hybrid metasurface for visible PLA is o...
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Format: | Article |
Language: | English |
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SpringerOpen
2020-05-01
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Series: | Nanoscale Research Letters |
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Online Access: | http://link.springer.com/article/10.1186/s11671-020-03332-x |
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author | Yongzhi Cheng Fu Chen Hui Luo |
author_facet | Yongzhi Cheng Fu Chen Hui Luo |
author_sort | Yongzhi Cheng |
collection | DOAJ |
description | Abstract A simple design of triple-band perfect light absorber (PLA) based on hybrid metasurface in visible region has been presented in this work, which turns out to be applicable for refractive index (RI) sensing. Distinct from previous designs, the proposed hybrid metasurface for visible PLA is only consisted of periodic silicon cross nanostructure arrays and gold substrate. The periodic silicon cross arrays deposited on the gold substrate contribute to excite the guided modes under the normal incident light illumination. According to the simulation results, it can be found that three perfect absorption peaks of 98.1%, 98.7%, and 99.6% which are located at 402.5 THz, 429.5 THz, and 471.5 THz, respectively, have been clearly observed in PLA. This triple-band perfect absorption effect could be attributed to the intrinsic loss of silicon material originated from the guided mode excitations caused by the standing waves of different orders. It has been confirmed that the perfect absorption properties of the PLA can be easily regulated by changing the geometric parameters of the unit-cell nanostructure. Furthermore, the designed PLA served as a RI sensor can achieve sensitivity of about 25.3, 41.3, and 31.9 THz /refractive index unit (RIU). It can be believed that the proposed design of PLA for RI sensing would provide great potential applications in sensing, detecting, the enhanced visible spectroscopy, etc. |
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id | doaj.art-9de62ac6d5e743b497d12aa64b288568 |
institution | Directory Open Access Journal |
issn | 1556-276X |
language | English |
last_indexed | 2024-03-12T09:18:12Z |
publishDate | 2020-05-01 |
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series | Nanoscale Research Letters |
spelling | doaj.art-9de62ac6d5e743b497d12aa64b2885682023-09-02T14:40:55ZengSpringerOpenNanoscale Research Letters1556-276X2020-05-0115111010.1186/s11671-020-03332-xTriple-Band Perfect Light Absorber Based on Hybrid Metasurface for Sensing ApplicationYongzhi Cheng0Fu Chen1Hui Luo2School of Information Science and Engineering, Wuhan University of Science and TechnologySchool of Information Science and Engineering, Wuhan University of Science and TechnologySchool of Information Science and Engineering, Wuhan University of Science and TechnologyAbstract A simple design of triple-band perfect light absorber (PLA) based on hybrid metasurface in visible region has been presented in this work, which turns out to be applicable for refractive index (RI) sensing. Distinct from previous designs, the proposed hybrid metasurface for visible PLA is only consisted of periodic silicon cross nanostructure arrays and gold substrate. The periodic silicon cross arrays deposited on the gold substrate contribute to excite the guided modes under the normal incident light illumination. According to the simulation results, it can be found that three perfect absorption peaks of 98.1%, 98.7%, and 99.6% which are located at 402.5 THz, 429.5 THz, and 471.5 THz, respectively, have been clearly observed in PLA. This triple-band perfect absorption effect could be attributed to the intrinsic loss of silicon material originated from the guided mode excitations caused by the standing waves of different orders. It has been confirmed that the perfect absorption properties of the PLA can be easily regulated by changing the geometric parameters of the unit-cell nanostructure. Furthermore, the designed PLA served as a RI sensor can achieve sensitivity of about 25.3, 41.3, and 31.9 THz /refractive index unit (RIU). It can be believed that the proposed design of PLA for RI sensing would provide great potential applications in sensing, detecting, the enhanced visible spectroscopy, etc.http://link.springer.com/article/10.1186/s11671-020-03332-xVisibleHybrid metasurfacePerfect light absorberSilicon cross nanostructure |
spellingShingle | Yongzhi Cheng Fu Chen Hui Luo Triple-Band Perfect Light Absorber Based on Hybrid Metasurface for Sensing Application Nanoscale Research Letters Visible Hybrid metasurface Perfect light absorber Silicon cross nanostructure |
title | Triple-Band Perfect Light Absorber Based on Hybrid Metasurface for Sensing Application |
title_full | Triple-Band Perfect Light Absorber Based on Hybrid Metasurface for Sensing Application |
title_fullStr | Triple-Band Perfect Light Absorber Based on Hybrid Metasurface for Sensing Application |
title_full_unstemmed | Triple-Band Perfect Light Absorber Based on Hybrid Metasurface for Sensing Application |
title_short | Triple-Band Perfect Light Absorber Based on Hybrid Metasurface for Sensing Application |
title_sort | triple band perfect light absorber based on hybrid metasurface for sensing application |
topic | Visible Hybrid metasurface Perfect light absorber Silicon cross nanostructure |
url | http://link.springer.com/article/10.1186/s11671-020-03332-x |
work_keys_str_mv | AT yongzhicheng triplebandperfectlightabsorberbasedonhybridmetasurfaceforsensingapplication AT fuchen triplebandperfectlightabsorberbasedonhybridmetasurfaceforsensingapplication AT huiluo triplebandperfectlightabsorberbasedonhybridmetasurfaceforsensingapplication |