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White-Light Spectral Interferometry for Characterizing Inhomogeneity in Solutions and Nanocolloids
[Image: see text] We demonstrate the use of white-light spectral interferometry as an effective technique involving only linear optical interactions and a partially coherent light source to measure the complex transmission response function of optical resonance and to determine the corresponding var...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2022
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10125346/ https://www.ncbi.nlm.nih.gov/pubmed/37101849 http://dx.doi.org/10.1021/acsnanoscienceau.2c00014 |
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author | Praturi, Aparna Schrod, Stefan Singh, Bhanu Pratap Vasa, Parinda |
author_facet | Praturi, Aparna Schrod, Stefan Singh, Bhanu Pratap Vasa, Parinda |
author_sort | Praturi, Aparna |
collection | PubMed |
description | [Image: see text] We demonstrate the use of white-light spectral interferometry as an effective technique involving only linear optical interactions and a partially coherent light source to measure the complex transmission response function of optical resonance and to determine the corresponding variation in the refractive index relative to a reference. We also discuss experimental arrangements to increase the accuracy and sensitivity of the technique. The superiority of the technique over single-beam absorption measurements is demonstrated by the accurate determination of the response function of the chlorophyll-a solution. The technique is then applied to chlorophyll-a solutions of varying concentrations and gold nanocolloids to characterize inhomogeneous broadening. Results on the inhomogeneity of gold nanocolloids are also supported by transmission electron micrographs, showing distributions of the size and shape of the constituent gold nanorods. |
format | Online Article Text |
id | pubmed-10125346 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-101253462023-04-25 White-Light Spectral Interferometry for Characterizing Inhomogeneity in Solutions and Nanocolloids Praturi, Aparna Schrod, Stefan Singh, Bhanu Pratap Vasa, Parinda ACS Nanosci Au [Image: see text] We demonstrate the use of white-light spectral interferometry as an effective technique involving only linear optical interactions and a partially coherent light source to measure the complex transmission response function of optical resonance and to determine the corresponding variation in the refractive index relative to a reference. We also discuss experimental arrangements to increase the accuracy and sensitivity of the technique. The superiority of the technique over single-beam absorption measurements is demonstrated by the accurate determination of the response function of the chlorophyll-a solution. The technique is then applied to chlorophyll-a solutions of varying concentrations and gold nanocolloids to characterize inhomogeneous broadening. Results on the inhomogeneity of gold nanocolloids are also supported by transmission electron micrographs, showing distributions of the size and shape of the constituent gold nanorods. American Chemical Society 2022-07-18 /pmc/articles/PMC10125346/ /pubmed/37101849 http://dx.doi.org/10.1021/acsnanoscienceau.2c00014 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Praturi, Aparna Schrod, Stefan Singh, Bhanu Pratap Vasa, Parinda White-Light Spectral Interferometry for Characterizing Inhomogeneity in Solutions and Nanocolloids |
title | White-Light
Spectral Interferometry for Characterizing
Inhomogeneity in Solutions and Nanocolloids |
title_full | White-Light
Spectral Interferometry for Characterizing
Inhomogeneity in Solutions and Nanocolloids |
title_fullStr | White-Light
Spectral Interferometry for Characterizing
Inhomogeneity in Solutions and Nanocolloids |
title_full_unstemmed | White-Light
Spectral Interferometry for Characterizing
Inhomogeneity in Solutions and Nanocolloids |
title_short | White-Light
Spectral Interferometry for Characterizing
Inhomogeneity in Solutions and Nanocolloids |
title_sort | white-light
spectral interferometry for characterizing
inhomogeneity in solutions and nanocolloids |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10125346/ https://www.ncbi.nlm.nih.gov/pubmed/37101849 http://dx.doi.org/10.1021/acsnanoscienceau.2c00014 |
work_keys_str_mv | AT praturiaparna whitelightspectralinterferometryforcharacterizinginhomogeneityinsolutionsandnanocolloids AT schrodstefan whitelightspectralinterferometryforcharacterizinginhomogeneityinsolutionsandnanocolloids AT singhbhanupratap whitelightspectralinterferometryforcharacterizinginhomogeneityinsolutionsandnanocolloids AT vasaparinda whitelightspectralinterferometryforcharacterizinginhomogeneityinsolutionsandnanocolloids |