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Interference micro/nanolenses of salts for local modulation of Raman scattering
Micro/nanolenses play a crucial role in optics and spectroscopy, but the effect of interference patterns within each lens has been largely unexplored. Herein, we investigate modulation of Raman scattering by the interference within a single micro/nanolens of a hygroscopic salt. Lenses having two dif...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10624006/ https://www.ncbi.nlm.nih.gov/pubmed/37928860 http://dx.doi.org/10.1039/d3ra05722d |
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author | Kim, Yun-Tae Lee, Cheongha Lim, Seongyeop Lee, Chang Young |
author_facet | Kim, Yun-Tae Lee, Cheongha Lim, Seongyeop Lee, Chang Young |
author_sort | Kim, Yun-Tae |
collection | PubMed |
description | Micro/nanolenses play a crucial role in optics and spectroscopy, but the effect of interference patterns within each lens has been largely unexplored. Herein, we investigate modulation of Raman scattering by the interference within a single micro/nanolens of a hygroscopic salt. Lenses having two different diameter (d) ranges, d > 2 μm and d ∼1 μm, are placed on a silicon substrate, followed by collection of a Raman intensity map of the silicon peak. Lenses with d > 2 μm show dark and bright circular fringes in the Raman map, resembling the Newton's rings formed by optical interference. In the smaller lenses (d ∼1 μm), the map yields only a single peak at the center, representing either an intensity maximum or minimum. In both diameter ranges, whether the Raman intensity is enhanced or suppressed is determined by interference conditions, such as wavelength of the excitation laser or thickness of the SiO(2) layer. The interference in salt micro/nanolenses finds applications in local modulation of Raman scattering of a nanoscale object, as demonstrated in individual single-walled carbon nanotubes decorated with the salt lenses. |
format | Online Article Text |
id | pubmed-10624006 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-106240062023-11-04 Interference micro/nanolenses of salts for local modulation of Raman scattering Kim, Yun-Tae Lee, Cheongha Lim, Seongyeop Lee, Chang Young RSC Adv Chemistry Micro/nanolenses play a crucial role in optics and spectroscopy, but the effect of interference patterns within each lens has been largely unexplored. Herein, we investigate modulation of Raman scattering by the interference within a single micro/nanolens of a hygroscopic salt. Lenses having two different diameter (d) ranges, d > 2 μm and d ∼1 μm, are placed on a silicon substrate, followed by collection of a Raman intensity map of the silicon peak. Lenses with d > 2 μm show dark and bright circular fringes in the Raman map, resembling the Newton's rings formed by optical interference. In the smaller lenses (d ∼1 μm), the map yields only a single peak at the center, representing either an intensity maximum or minimum. In both diameter ranges, whether the Raman intensity is enhanced or suppressed is determined by interference conditions, such as wavelength of the excitation laser or thickness of the SiO(2) layer. The interference in salt micro/nanolenses finds applications in local modulation of Raman scattering of a nanoscale object, as demonstrated in individual single-walled carbon nanotubes decorated with the salt lenses. The Royal Society of Chemistry 2023-11-03 /pmc/articles/PMC10624006/ /pubmed/37928860 http://dx.doi.org/10.1039/d3ra05722d Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Kim, Yun-Tae Lee, Cheongha Lim, Seongyeop Lee, Chang Young Interference micro/nanolenses of salts for local modulation of Raman scattering |
title | Interference micro/nanolenses of salts for local modulation of Raman scattering |
title_full | Interference micro/nanolenses of salts for local modulation of Raman scattering |
title_fullStr | Interference micro/nanolenses of salts for local modulation of Raman scattering |
title_full_unstemmed | Interference micro/nanolenses of salts for local modulation of Raman scattering |
title_short | Interference micro/nanolenses of salts for local modulation of Raman scattering |
title_sort | interference micro/nanolenses of salts for local modulation of raman scattering |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10624006/ https://www.ncbi.nlm.nih.gov/pubmed/37928860 http://dx.doi.org/10.1039/d3ra05722d |
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