Plasmonic Surface Lattice Resonances in Suspended Symmetric Double-Layer Gratings
Surface lattice resonances (SLRs) with high-quality factors supported by metal nanoparticle arrays are useful for plasmonic nanolasers, biochemical sensors, and surface-enhanced Raman spectroscopy. Most nanoparticle arrays are fabricated on a substrate, and the refractive index mismatch between the...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-11-01
|
| Series: | Photonics |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2304-6732/9/12/890 |
| _version_ | 1797455682073526272 |
|---|---|
| author | Mengjia Cen Jiawei Wang Jianxun Liu Ye Li Wenfeng Cai Delai Kong Dan Luo Tun Cao Yan Jun Liu |
| author_facet | Mengjia Cen Jiawei Wang Jianxun Liu Ye Li Wenfeng Cai Delai Kong Dan Luo Tun Cao Yan Jun Liu |
| author_sort | Mengjia Cen |
| collection | DOAJ |
| description | Surface lattice resonances (SLRs) with high-quality factors supported by metal nanoparticle arrays are useful for plasmonic nanolasers, biochemical sensors, and surface-enhanced Raman spectroscopy. Most nanoparticle arrays are fabricated on a substrate, and the refractive index mismatch between the substrate and superstrate suppresses the performance of SLRs. In this work, we propose unique SLRs excited in suspended, self-aligned symmetric double-layer gratings with index-matched environment. The self-aligned double-layer gratings are fabricated using a single-step electron beam lithography and exhibit a Fano-like spectra resulting from interference between out-of-plane plasmonic resonances and diffraction modes. By changing the incident angle and refractive index of the surrounding medium, the SLRs can be tuned from visible to near-infrared regions with a high-quality factor of 120. |
| first_indexed | 2024-03-09T15:57:48Z |
| format | Article |
| id | doaj.art-d4805d3cbb2446ffaac4288cc17a258a |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-09T15:57:48Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-d4805d3cbb2446ffaac4288cc17a258a2023-11-24T17:24:16ZengMDPI AGPhotonics2304-67322022-11-0191289010.3390/photonics9120890Plasmonic Surface Lattice Resonances in Suspended Symmetric Double-Layer GratingsMengjia Cen0Jiawei Wang1Jianxun Liu2Ye Li3Wenfeng Cai4Delai Kong5Dan Luo6Tun Cao7Yan Jun Liu8Department of Biomedical Engineering, Dalian University of Technology, Dalian 116024, ChinaDepartment of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, ChinaDepartment of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, ChinaDepartment of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, ChinaDepartment of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, ChinaDepartment of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, ChinaDepartment of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, ChinaDepartment of Biomedical Engineering, Dalian University of Technology, Dalian 116024, ChinaDepartment of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, ChinaSurface lattice resonances (SLRs) with high-quality factors supported by metal nanoparticle arrays are useful for plasmonic nanolasers, biochemical sensors, and surface-enhanced Raman spectroscopy. Most nanoparticle arrays are fabricated on a substrate, and the refractive index mismatch between the substrate and superstrate suppresses the performance of SLRs. In this work, we propose unique SLRs excited in suspended, self-aligned symmetric double-layer gratings with index-matched environment. The self-aligned double-layer gratings are fabricated using a single-step electron beam lithography and exhibit a Fano-like spectra resulting from interference between out-of-plane plasmonic resonances and diffraction modes. By changing the incident angle and refractive index of the surrounding medium, the SLRs can be tuned from visible to near-infrared regions with a high-quality factor of 120.https://www.mdpi.com/2304-6732/9/12/890surface lattice resonancemetasurfacedouble-layer gratings |
| spellingShingle | Mengjia Cen Jiawei Wang Jianxun Liu Ye Li Wenfeng Cai Delai Kong Dan Luo Tun Cao Yan Jun Liu Plasmonic Surface Lattice Resonances in Suspended Symmetric Double-Layer Gratings Photonics surface lattice resonance metasurface double-layer gratings |
| title | Plasmonic Surface Lattice Resonances in Suspended Symmetric Double-Layer Gratings |
| title_full | Plasmonic Surface Lattice Resonances in Suspended Symmetric Double-Layer Gratings |
| title_fullStr | Plasmonic Surface Lattice Resonances in Suspended Symmetric Double-Layer Gratings |
| title_full_unstemmed | Plasmonic Surface Lattice Resonances in Suspended Symmetric Double-Layer Gratings |
| title_short | Plasmonic Surface Lattice Resonances in Suspended Symmetric Double-Layer Gratings |
| title_sort | plasmonic surface lattice resonances in suspended symmetric double layer gratings |
| topic | surface lattice resonance metasurface double-layer gratings |
| url | https://www.mdpi.com/2304-6732/9/12/890 |
| work_keys_str_mv | AT mengjiacen plasmonicsurfacelatticeresonancesinsuspendedsymmetricdoublelayergratings AT jiaweiwang plasmonicsurfacelatticeresonancesinsuspendedsymmetricdoublelayergratings AT jianxunliu plasmonicsurfacelatticeresonancesinsuspendedsymmetricdoublelayergratings AT yeli plasmonicsurfacelatticeresonancesinsuspendedsymmetricdoublelayergratings AT wenfengcai plasmonicsurfacelatticeresonancesinsuspendedsymmetricdoublelayergratings AT delaikong plasmonicsurfacelatticeresonancesinsuspendedsymmetricdoublelayergratings AT danluo plasmonicsurfacelatticeresonancesinsuspendedsymmetricdoublelayergratings AT tuncao plasmonicsurfacelatticeresonancesinsuspendedsymmetricdoublelayergratings AT yanjunliu plasmonicsurfacelatticeresonancesinsuspendedsymmetricdoublelayergratings |