Design of infrared optical absorber using silver nanorings array made by a top-down process
Abstract This paper presents the numerical simulation and fabrication of a metasurface composed of silver nanorings with a split-ring gap. These nanostructures can exhibit optically-induced magnetic responses with unique possibilities to control absorption at optical frequencies. The absorption coef...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-05-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-34579-w |
| _version_ | 1797827552547438592 |
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| author | I. Bouanane F. Bedu I. Ozerov B. Sciacca L. Santinacci D. Duché G. Berginc L. Escoubas O. Margeat J. Le Rouzo |
| author_facet | I. Bouanane F. Bedu I. Ozerov B. Sciacca L. Santinacci D. Duché G. Berginc L. Escoubas O. Margeat J. Le Rouzo |
| author_sort | I. Bouanane |
| collection | DOAJ |
| description | Abstract This paper presents the numerical simulation and fabrication of a metasurface composed of silver nanorings with a split-ring gap. These nanostructures can exhibit optically-induced magnetic responses with unique possibilities to control absorption at optical frequencies. The absorption coefficient of the silver nanoring was optimized by performing a parametric study with Finite Difference Time Domain (FDTD) simulations. The absorption and scattering cross sections of the nanostructures are numerically calculated to assess the impact of the inner and outer radii, the thickness and the split-ring gap of one nanoring, as well as the periodicity factor for a group of four nanorings. This showed full control on resonance peaks and absorption enhancement in the near infrared spectral range. The experimental fabrication of this metasurface made of an array of silver nanorings is achieved by e-beam lithography and metallization. Optical characterizations are then carried out and compared to the numerical simulations. In contrast to usual microwave split-ring resonator metasurfaces reported in literature, the present study shows both the realization by a top-down process and modelling performed in the infrared frequency range. |
| first_indexed | 2024-04-09T12:50:10Z |
| format | Article |
| id | doaj.art-123dea8df4c4409a85c224c15c2b098b |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-09T12:50:10Z |
| publishDate | 2023-05-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-123dea8df4c4409a85c224c15c2b098b2023-05-14T11:13:49ZengNature PortfolioScientific Reports2045-23222023-05-0113111010.1038/s41598-023-34579-wDesign of infrared optical absorber using silver nanorings array made by a top-down processI. Bouanane0F. Bedu1I. Ozerov2B. Sciacca3L. Santinacci4D. Duché5G. Berginc6L. Escoubas7O. Margeat8J. Le Rouzo9Aix Marseille University, Université de Toulon, CNRS, IM2NPAix Marseille University, CNRS, CINAM, AMUTECHAix Marseille University, CNRS, CINAM, AMUTECHAix Marseille University, CNRS, CINAM, AMUTECHAix Marseille University, CNRS, CINAM, AMUTECHAix Marseille University, Université de Toulon, CNRS, IM2NPThales LAS France SASAix Marseille University, Université de Toulon, CNRS, IM2NPAix Marseille University, CNRS, CINAM, AMUTECHAix Marseille University, Université de Toulon, CNRS, IM2NPAbstract This paper presents the numerical simulation and fabrication of a metasurface composed of silver nanorings with a split-ring gap. These nanostructures can exhibit optically-induced magnetic responses with unique possibilities to control absorption at optical frequencies. The absorption coefficient of the silver nanoring was optimized by performing a parametric study with Finite Difference Time Domain (FDTD) simulations. The absorption and scattering cross sections of the nanostructures are numerically calculated to assess the impact of the inner and outer radii, the thickness and the split-ring gap of one nanoring, as well as the periodicity factor for a group of four nanorings. This showed full control on resonance peaks and absorption enhancement in the near infrared spectral range. The experimental fabrication of this metasurface made of an array of silver nanorings is achieved by e-beam lithography and metallization. Optical characterizations are then carried out and compared to the numerical simulations. In contrast to usual microwave split-ring resonator metasurfaces reported in literature, the present study shows both the realization by a top-down process and modelling performed in the infrared frequency range.https://doi.org/10.1038/s41598-023-34579-w |
| spellingShingle | I. Bouanane F. Bedu I. Ozerov B. Sciacca L. Santinacci D. Duché G. Berginc L. Escoubas O. Margeat J. Le Rouzo Design of infrared optical absorber using silver nanorings array made by a top-down process Scientific Reports |
| title | Design of infrared optical absorber using silver nanorings array made by a top-down process |
| title_full | Design of infrared optical absorber using silver nanorings array made by a top-down process |
| title_fullStr | Design of infrared optical absorber using silver nanorings array made by a top-down process |
| title_full_unstemmed | Design of infrared optical absorber using silver nanorings array made by a top-down process |
| title_short | Design of infrared optical absorber using silver nanorings array made by a top-down process |
| title_sort | design of infrared optical absorber using silver nanorings array made by a top down process |
| url | https://doi.org/10.1038/s41598-023-34579-w |
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