Gold Nanoparticles as Probes for Nano-Raman Spectroscopy: Preliminary Experimental Results and Modeling
This paper presents an effective Tip-Enhanced Raman Spectrometer (TERS) in backscattering reflection configuration. It combines a tip-probe nanopositioning system with Raman spectroscope. Specific tips were processed by anchoring gold nanoparticles on the apex of tapered optical fibers, prepared by...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | International Journal of Optics |
| Online Access: | http://dx.doi.org/10.1155/2012/591083 |
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| _version_ | 1849387163232239616 |
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| author | V. Le Nader J.-Y. Mevellec T. Minea G. Louarn |
| author_facet | V. Le Nader J.-Y. Mevellec T. Minea G. Louarn |
| author_sort | V. Le Nader |
| collection | DOAJ |
| description | This paper presents an effective Tip-Enhanced Raman Spectrometer (TERS) in backscattering reflection configuration. It combines a tip-probe nanopositioning system with Raman spectroscope. Specific tips were processed by anchoring gold nanoparticles on the apex of tapered optical fibers, prepared by an improved chemical etching method. Hence, it is possible to expose a very small area of the sample (~20 nm2) to the very strong local electromagnetic field generated by the lightning rod effect. This experimental configuration was modelled and optimised using the finite element method, which takes into account electromagnetic effects as well as the plasmon resonance. Finally, TERS measurements on single-wall carbon nanotubes were successfully performed. These results confirm the high Raman scattering enhancement predicted by the modelling, induced by our new nano-Raman device. |
| format | Article |
| id | doaj-art-331356e1d44e4e9cb6a6615c32c0d034 |
| institution | Kabale University |
| issn | 1687-9384 1687-9392 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Optics |
| spelling | doaj-art-331356e1d44e4e9cb6a6615c32c0d0342025-08-20T03:55:22ZengWileyInternational Journal of Optics1687-93841687-93922012-01-01201210.1155/2012/591083591083Gold Nanoparticles as Probes for Nano-Raman Spectroscopy: Preliminary Experimental Results and ModelingV. Le Nader0J.-Y. Mevellec1T. Minea2G. Louarn3Institut des Matériaux Jean Rouxel (IMN)-UMR 6502, 2 rue de la Houssinière, BP 32229, 44322 Nantes Cédex 3, FranceInstitut des Matériaux Jean Rouxel (IMN)-UMR 6502, 2 rue de la Houssinière, BP 32229, 44322 Nantes Cédex 3, FranceLaboratoire de Physique des Gaz et des Plasmas, UMR 8578 CNRS-Université Paris-Sud, Bat. 210, Campus d’Orsay, 91405 Orsay, FranceInstitut des Matériaux Jean Rouxel (IMN)-UMR 6502, 2 rue de la Houssinière, BP 32229, 44322 Nantes Cédex 3, FranceThis paper presents an effective Tip-Enhanced Raman Spectrometer (TERS) in backscattering reflection configuration. It combines a tip-probe nanopositioning system with Raman spectroscope. Specific tips were processed by anchoring gold nanoparticles on the apex of tapered optical fibers, prepared by an improved chemical etching method. Hence, it is possible to expose a very small area of the sample (~20 nm2) to the very strong local electromagnetic field generated by the lightning rod effect. This experimental configuration was modelled and optimised using the finite element method, which takes into account electromagnetic effects as well as the plasmon resonance. Finally, TERS measurements on single-wall carbon nanotubes were successfully performed. These results confirm the high Raman scattering enhancement predicted by the modelling, induced by our new nano-Raman device.http://dx.doi.org/10.1155/2012/591083 |
| spellingShingle | V. Le Nader J.-Y. Mevellec T. Minea G. Louarn Gold Nanoparticles as Probes for Nano-Raman Spectroscopy: Preliminary Experimental Results and Modeling International Journal of Optics |
| title | Gold Nanoparticles as Probes for Nano-Raman Spectroscopy: Preliminary Experimental Results and Modeling |
| title_full | Gold Nanoparticles as Probes for Nano-Raman Spectroscopy: Preliminary Experimental Results and Modeling |
| title_fullStr | Gold Nanoparticles as Probes for Nano-Raman Spectroscopy: Preliminary Experimental Results and Modeling |
| title_full_unstemmed | Gold Nanoparticles as Probes for Nano-Raman Spectroscopy: Preliminary Experimental Results and Modeling |
| title_short | Gold Nanoparticles as Probes for Nano-Raman Spectroscopy: Preliminary Experimental Results and Modeling |
| title_sort | gold nanoparticles as probes for nano raman spectroscopy preliminary experimental results and modeling |
| url | http://dx.doi.org/10.1155/2012/591083 |
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