Theoretical Design of Asymmetric/symmetric Nanodisk Arrays Deposited on GaAs Film for Plasmonic Modulation and Sensing
Metallic plasmonic nanostructures can achieve nanoscale light-matter interactions and have a wide range of applications in spectral modulation and optical sensing fields stemming from their rich and tunable optical properties. Herein, we propose a composite nanostructure consisting of a gold nanodis...
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| Format: | Article |
| Language: | English |
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Kaunas University of Technology
2025-01-01
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| Series: | Medžiagotyra |
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| Online Access: | https://matsc.ktu.lt/index.php/MatSc/article/view/38239 |
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| _version_ | 1841561161588277248 |
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| author | Cheng SUN Xue YANG Xinyu LI Shuwen CHU |
| author_facet | Cheng SUN Xue YANG Xinyu LI Shuwen CHU |
| author_sort | Cheng SUN |
| collection | DOAJ |
| description | Metallic plasmonic nanostructures can achieve nanoscale light-matter interactions and have a wide range of applications in spectral modulation and optical sensing fields stemming from their rich and tunable optical properties. Herein, we propose a composite nanostructure consisting of a gold nanodisk array and a GaAs thin film, which achieves symmetric and asymmetric configurations by adjusting the nanodisk radius of the array structure. We systematically investigate the relationship between plasmonic modulation and asymmetric/symmetric coupling modes. The results indicate that the two configurations correspond to single resonance and dual resonance, respectively. The short wavelength of the dual-resonant mode is jointly excited by the local surface plasmon polariton (LSP) mode of the nanodisk itself and the waveguide-hybridized lattice mode of the bottom GaAs film. And the long wavelength corresponds to the LSP mode of the array nanostructure which strongly depends on its size. Improving structural symmetry leads to different trends in resonance wavelength. Furthermore, we investigate the sensing performances for asymmetric/symmetric nanodisk arrays. This work is of great significance for applications such as multi-resonance sensing, plasmonic modulation, etc. |
| format | Article |
| id | doaj-art-1420eafdac6c4334950a1a29a1b9809b |
| institution | Kabale University |
| issn | 1392-1320 2029-7289 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Kaunas University of Technology |
| record_format | Article |
| series | Medžiagotyra |
| spelling | doaj-art-1420eafdac6c4334950a1a29a1b9809b2025-01-03T05:37:03ZengKaunas University of TechnologyMedžiagotyra1392-13202029-72892025-01-0110.5755/j02.ms.3823943493Theoretical Design of Asymmetric/symmetric Nanodisk Arrays Deposited on GaAs Film for Plasmonic Modulation and SensingCheng SUN0https://orcid.org/0000-0002-7014-7126Xue YANG1Xinyu LI2Shuwen CHU3Dalian University / Liaoning Engineering Laboratory of Optoelectronic Information TechnologyDalian University / Liaoning Engineering Laboratory of Optoelectronic Information TechnologyDalian University / Liaoning Engineering Laboratory of Optoelectronic Information TechnologyDalian University / Liaoning Engineering Laboratory of Optoelectronic Information TechnologyMetallic plasmonic nanostructures can achieve nanoscale light-matter interactions and have a wide range of applications in spectral modulation and optical sensing fields stemming from their rich and tunable optical properties. Herein, we propose a composite nanostructure consisting of a gold nanodisk array and a GaAs thin film, which achieves symmetric and asymmetric configurations by adjusting the nanodisk radius of the array structure. We systematically investigate the relationship between plasmonic modulation and asymmetric/symmetric coupling modes. The results indicate that the two configurations correspond to single resonance and dual resonance, respectively. The short wavelength of the dual-resonant mode is jointly excited by the local surface plasmon polariton (LSP) mode of the nanodisk itself and the waveguide-hybridized lattice mode of the bottom GaAs film. And the long wavelength corresponds to the LSP mode of the array nanostructure which strongly depends on its size. Improving structural symmetry leads to different trends in resonance wavelength. Furthermore, we investigate the sensing performances for asymmetric/symmetric nanodisk arrays. This work is of great significance for applications such as multi-resonance sensing, plasmonic modulation, etc.https://matsc.ktu.lt/index.php/MatSc/article/view/38239asymmetric/symmetric nanodisk arraysingle-/dual-resonant modefinite difference time domainsensing performance |
| spellingShingle | Cheng SUN Xue YANG Xinyu LI Shuwen CHU Theoretical Design of Asymmetric/symmetric Nanodisk Arrays Deposited on GaAs Film for Plasmonic Modulation and Sensing Medžiagotyra asymmetric/symmetric nanodisk array single-/dual-resonant mode finite difference time domain sensing performance |
| title | Theoretical Design of Asymmetric/symmetric Nanodisk Arrays Deposited on GaAs Film for Plasmonic Modulation and Sensing |
| title_full | Theoretical Design of Asymmetric/symmetric Nanodisk Arrays Deposited on GaAs Film for Plasmonic Modulation and Sensing |
| title_fullStr | Theoretical Design of Asymmetric/symmetric Nanodisk Arrays Deposited on GaAs Film for Plasmonic Modulation and Sensing |
| title_full_unstemmed | Theoretical Design of Asymmetric/symmetric Nanodisk Arrays Deposited on GaAs Film for Plasmonic Modulation and Sensing |
| title_short | Theoretical Design of Asymmetric/symmetric Nanodisk Arrays Deposited on GaAs Film for Plasmonic Modulation and Sensing |
| title_sort | theoretical design of asymmetric symmetric nanodisk arrays deposited on gaas film for plasmonic modulation and sensing |
| topic | asymmetric/symmetric nanodisk array single-/dual-resonant mode finite difference time domain sensing performance |
| url | https://matsc.ktu.lt/index.php/MatSc/article/view/38239 |
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