Sensing Properties of a Fabry-Perot Dielectric Structure and Dimer Nanoparticles
We investigate the use of a Fabry-Perot dielectric structure combined with differently shaped nanoparticles for Surface Enhanced Raman Scattering. In particular, we show how an ideal two-layer Fabry-Perot configuration enhances the local surface field of silver nanoparticles positioned on the surfac...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | Journal of Nanotechnology |
| Online Access: | http://dx.doi.org/10.1155/2012/745390 |
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| _version_ | 1832559829591261184 |
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| author | A. Polemi K. L. Shuford |
| author_facet | A. Polemi K. L. Shuford |
| author_sort | A. Polemi |
| collection | DOAJ |
| description | We investigate the use of a Fabry-Perot dielectric structure combined with differently shaped nanoparticles for Surface Enhanced Raman Scattering. In particular, we show how an ideal two-layer Fabry-Perot configuration enhances the local surface field of silver nanoparticles positioned on the surface of the structure. We develop the concept using disc dimers and then extend the discussion to bowtie nanoparticles. The structure is excited by a single emitter, which couples to the nanoparticles through the dielectric layers, producing a wide aperture field that can be used to excite multiple dimers. We show how an array of nanoparticles can be properly arranged in order to increase the total scattering signal generated from the structure. The layered geometry produces robust field properties in between nanoparticles, making the overall sensing characteristics less sensitive to the interparticle seperation distance and incident polarization. |
| format | Article |
| id | doaj-art-55212a316097443fae9875767f307a86 |
| institution | Kabale University |
| issn | 1687-9503 1687-9511 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Nanotechnology |
| spelling | doaj-art-55212a316097443fae9875767f307a862025-02-03T01:29:10ZengWileyJournal of Nanotechnology1687-95031687-95112012-01-01201210.1155/2012/745390745390Sensing Properties of a Fabry-Perot Dielectric Structure and Dimer NanoparticlesA. Polemi0K. L. Shuford1Department of Chemistry, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USADepartment of Chemistry, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USAWe investigate the use of a Fabry-Perot dielectric structure combined with differently shaped nanoparticles for Surface Enhanced Raman Scattering. In particular, we show how an ideal two-layer Fabry-Perot configuration enhances the local surface field of silver nanoparticles positioned on the surface of the structure. We develop the concept using disc dimers and then extend the discussion to bowtie nanoparticles. The structure is excited by a single emitter, which couples to the nanoparticles through the dielectric layers, producing a wide aperture field that can be used to excite multiple dimers. We show how an array of nanoparticles can be properly arranged in order to increase the total scattering signal generated from the structure. The layered geometry produces robust field properties in between nanoparticles, making the overall sensing characteristics less sensitive to the interparticle seperation distance and incident polarization.http://dx.doi.org/10.1155/2012/745390 |
| spellingShingle | A. Polemi K. L. Shuford Sensing Properties of a Fabry-Perot Dielectric Structure and Dimer Nanoparticles Journal of Nanotechnology |
| title | Sensing Properties of a Fabry-Perot Dielectric Structure and Dimer Nanoparticles |
| title_full | Sensing Properties of a Fabry-Perot Dielectric Structure and Dimer Nanoparticles |
| title_fullStr | Sensing Properties of a Fabry-Perot Dielectric Structure and Dimer Nanoparticles |
| title_full_unstemmed | Sensing Properties of a Fabry-Perot Dielectric Structure and Dimer Nanoparticles |
| title_short | Sensing Properties of a Fabry-Perot Dielectric Structure and Dimer Nanoparticles |
| title_sort | sensing properties of a fabry perot dielectric structure and dimer nanoparticles |
| url | http://dx.doi.org/10.1155/2012/745390 |
| work_keys_str_mv | AT apolemi sensingpropertiesofafabryperotdielectricstructureanddimernanoparticles AT klshuford sensingpropertiesofafabryperotdielectricstructureanddimernanoparticles |