Phase change plasmonic metasurface for dynamic thermal emission modulation
Plasmonic metasurfaces with adjustable optical responses can be achieved through phase change materials (PCMs) with high optical contrast. However, the on–off behavior of the phase change process results in the binary response of photonic devices, limiting the applications to the two-stage modulatio...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2024-01-01
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| Series: | APL Photonics |
| Online Access: | http://dx.doi.org/10.1063/5.0165663 |
| _version_ | 1797332139690164224 |
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| author | Zexiao Wang Lin Jing Xiu Liu Xiao Luo Hyeong Seok Yun Zhuo Li Sheng Shen |
| author_facet | Zexiao Wang Lin Jing Xiu Liu Xiao Luo Hyeong Seok Yun Zhuo Li Sheng Shen |
| author_sort | Zexiao Wang |
| collection | DOAJ |
| description | Plasmonic metasurfaces with adjustable optical responses can be achieved through phase change materials (PCMs) with high optical contrast. However, the on–off behavior of the phase change process results in the binary response of photonic devices, limiting the applications to the two-stage modulation. In this work, we propose a reconfigurable metasurface emitter based on a gold nanorod array on a VO2 thin film for achieving continuously tunable narrowband thermal emission. The electrode line connecting the center of each nanorod not only enables emission excitation electrically but also activates the phase transition of VO2 beneath the array layer due to Joule heating. The change in the dielectric environment due to the VO2 phase transition results in the modulation of emissivity from the plasmonic metasurfaces. The device performances regarding critical geometrical parameters are analyzed based on a fully coupled electro-thermo-optical finite element model. This new metasurface structure extends the binary nature of PCM based modulations to continuous reconfigurability and provides new possibilities toward smart metasurface emitters, reflectors, and other nanophotonic devices. |
| first_indexed | 2024-03-08T07:45:18Z |
| format | Article |
| id | doaj.art-d6f019e85d2343eaa03ff3400044c0ef |
| institution | Directory Open Access Journal |
| issn | 2378-0967 |
| language | English |
| last_indexed | 2024-03-08T07:45:18Z |
| publishDate | 2024-01-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | APL Photonics |
| spelling | doaj.art-d6f019e85d2343eaa03ff3400044c0ef2024-02-02T16:27:16ZengAIP Publishing LLCAPL Photonics2378-09672024-01-0191010801010801-710.1063/5.0165663Phase change plasmonic metasurface for dynamic thermal emission modulationZexiao Wang0Lin Jing1Xiu Liu2Xiao Luo3Hyeong Seok Yun4Zhuo Li5Sheng Shen6Department of Mechanical Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, USADepartment of Mechanical Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, USADepartment of Mechanical Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, USADepartment of Mechanical Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, USADepartment of Mechanical Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, USADepartment of Mechanical Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, USADepartment of Mechanical Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, USAPlasmonic metasurfaces with adjustable optical responses can be achieved through phase change materials (PCMs) with high optical contrast. However, the on–off behavior of the phase change process results in the binary response of photonic devices, limiting the applications to the two-stage modulation. In this work, we propose a reconfigurable metasurface emitter based on a gold nanorod array on a VO2 thin film for achieving continuously tunable narrowband thermal emission. The electrode line connecting the center of each nanorod not only enables emission excitation electrically but also activates the phase transition of VO2 beneath the array layer due to Joule heating. The change in the dielectric environment due to the VO2 phase transition results in the modulation of emissivity from the plasmonic metasurfaces. The device performances regarding critical geometrical parameters are analyzed based on a fully coupled electro-thermo-optical finite element model. This new metasurface structure extends the binary nature of PCM based modulations to continuous reconfigurability and provides new possibilities toward smart metasurface emitters, reflectors, and other nanophotonic devices.http://dx.doi.org/10.1063/5.0165663 |
| spellingShingle | Zexiao Wang Lin Jing Xiu Liu Xiao Luo Hyeong Seok Yun Zhuo Li Sheng Shen Phase change plasmonic metasurface for dynamic thermal emission modulation APL Photonics |
| title | Phase change plasmonic metasurface for dynamic thermal emission modulation |
| title_full | Phase change plasmonic metasurface for dynamic thermal emission modulation |
| title_fullStr | Phase change plasmonic metasurface for dynamic thermal emission modulation |
| title_full_unstemmed | Phase change plasmonic metasurface for dynamic thermal emission modulation |
| title_short | Phase change plasmonic metasurface for dynamic thermal emission modulation |
| title_sort | phase change plasmonic metasurface for dynamic thermal emission modulation |
| url | http://dx.doi.org/10.1063/5.0165663 |
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