A plasmonic staircase nano-antenna device with strong electric field enhancement for surface enhanced Raman scattering (SERS) applications
In this paper, a staircase plasmonic nano-antenna device is analysed both theoretically and experimentally. The tapered nano-antenna cavity with a grating leads to electric field enhancement factor (EF) as high as 31 close to 830nm. The integration of a metallic grating aids the coupling of light co...
| Main Authors: | , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2012
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| _version_ | 1797079886084440064 |
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| author | Li, Z Hattori, H Parkinson, P Tian, J Fu, L Tan, H Jagadish, C |
| author_facet | Li, Z Hattori, H Parkinson, P Tian, J Fu, L Tan, H Jagadish, C |
| author_sort | Li, Z |
| collection | OXFORD |
| description | In this paper, a staircase plasmonic nano-antenna device is analysed both theoretically and experimentally. The tapered nano-antenna cavity with a grating leads to electric field enhancement factor (EF) as high as 31 close to 830nm. The integration of a metallic grating aids the coupling of light coming from the vertical direction to the nano-antenna, increasing the electric field in the nano-antenna by a factor of 3. The smallest air gap width between the metallic regions of the fabricated nano-antenna is about 35nm, fabricated using focused ion beam system. The small air gaps in the nano-antennas can generate very high intensity electric fields which can be used in applications in biological sensing and imaging, nanoparticle manipulations and enhancement of nonlinear effects. In this paper, to experimentally demonstrate that with the integration of a well designed grating and reflectors, the resonance inside the nano-antenna cavity is increased significantly, we exploit one application of this device: the enhancement of surface enhanced Raman scattering (SERS). The present structure can lead to SERS EFs above 1 million. © 2012 IOP Publishing Ltd. |
| first_indexed | 2024-03-07T00:52:14Z |
| format | Journal article |
| id | oxford-uuid:86c8f41b-21c8-44b8-9046-4767173a7bbb |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T00:52:14Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | oxford-uuid:86c8f41b-21c8-44b8-9046-4767173a7bbb2022-03-26T22:06:25ZA plasmonic staircase nano-antenna device with strong electric field enhancement for surface enhanced Raman scattering (SERS) applicationsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:86c8f41b-21c8-44b8-9046-4767173a7bbbEnglishSymplectic Elements at Oxford2012Li, ZHattori, HParkinson, PTian, JFu, LTan, HJagadish, CIn this paper, a staircase plasmonic nano-antenna device is analysed both theoretically and experimentally. The tapered nano-antenna cavity with a grating leads to electric field enhancement factor (EF) as high as 31 close to 830nm. The integration of a metallic grating aids the coupling of light coming from the vertical direction to the nano-antenna, increasing the electric field in the nano-antenna by a factor of 3. The smallest air gap width between the metallic regions of the fabricated nano-antenna is about 35nm, fabricated using focused ion beam system. The small air gaps in the nano-antennas can generate very high intensity electric fields which can be used in applications in biological sensing and imaging, nanoparticle manipulations and enhancement of nonlinear effects. In this paper, to experimentally demonstrate that with the integration of a well designed grating and reflectors, the resonance inside the nano-antenna cavity is increased significantly, we exploit one application of this device: the enhancement of surface enhanced Raman scattering (SERS). The present structure can lead to SERS EFs above 1 million. © 2012 IOP Publishing Ltd. |
| spellingShingle | Li, Z Hattori, H Parkinson, P Tian, J Fu, L Tan, H Jagadish, C A plasmonic staircase nano-antenna device with strong electric field enhancement for surface enhanced Raman scattering (SERS) applications |
| title | A plasmonic staircase nano-antenna device with strong electric field enhancement for surface enhanced Raman scattering (SERS) applications |
| title_full | A plasmonic staircase nano-antenna device with strong electric field enhancement for surface enhanced Raman scattering (SERS) applications |
| title_fullStr | A plasmonic staircase nano-antenna device with strong electric field enhancement for surface enhanced Raman scattering (SERS) applications |
| title_full_unstemmed | A plasmonic staircase nano-antenna device with strong electric field enhancement for surface enhanced Raman scattering (SERS) applications |
| title_short | A plasmonic staircase nano-antenna device with strong electric field enhancement for surface enhanced Raman scattering (SERS) applications |
| title_sort | plasmonic staircase nano antenna device with strong electric field enhancement for surface enhanced raman scattering sers applications |
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