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Infrared Optical Functions of Water Retrieved Using Attenuated Total Reflection Spectroscopy

Comprehensive modeling of non-polarized infrared attenuated total reflection spectrum based on Fresnel equations and wavenumber-dependent dielectric function models of isotropic materials is shown to be a suitable and easy methodology to retrieve optical functions. The scheme is completely general a...

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Autor principal: Vieira, Luis G.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: SAGE Publications 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9903249/
https://www.ncbi.nlm.nih.gov/pubmed/36085565
http://dx.doi.org/10.1177/00037028221128813
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author Vieira, Luis G.
author_facet Vieira, Luis G.
author_sort Vieira, Luis G.
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description Comprehensive modeling of non-polarized infrared attenuated total reflection spectrum based on Fresnel equations and wavenumber-dependent dielectric function models of isotropic materials is shown to be a suitable and easy methodology to retrieve optical functions. The scheme is completely general and can be used even for strong dispersion and absorption resonances. Attenuated total reflection spectra in liquid water, measured in the spectral region 100–4400 cm(−1) with diamond and germanium as internal reflection elements, were used to illustrate and evaluate the method. The refractive index of water computed from the dispersion analysis is critically compared with literature data.
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spelling pubmed-99032492023-02-08 Infrared Optical Functions of Water Retrieved Using Attenuated Total Reflection Spectroscopy Vieira, Luis G. Appl Spectrosc Submitted Papers Comprehensive modeling of non-polarized infrared attenuated total reflection spectrum based on Fresnel equations and wavenumber-dependent dielectric function models of isotropic materials is shown to be a suitable and easy methodology to retrieve optical functions. The scheme is completely general and can be used even for strong dispersion and absorption resonances. Attenuated total reflection spectra in liquid water, measured in the spectral region 100–4400 cm(−1) with diamond and germanium as internal reflection elements, were used to illustrate and evaluate the method. The refractive index of water computed from the dispersion analysis is critically compared with literature data. SAGE Publications 2022-10-05 2023-02 /pmc/articles/PMC9903249/ /pubmed/36085565 http://dx.doi.org/10.1177/00037028221128813 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/This article is distributed under the terms of the Creative Commons Attribution 4.0 License (https://creativecommons.org/licenses/by/4.0/) which permits any use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access page (https://us.sagepub.com/en-us/nam/open-access-at-sage).
spellingShingle Submitted Papers
Vieira, Luis G.
Infrared Optical Functions of Water Retrieved Using Attenuated Total Reflection Spectroscopy
title Infrared Optical Functions of Water Retrieved Using Attenuated Total Reflection Spectroscopy
title_full Infrared Optical Functions of Water Retrieved Using Attenuated Total Reflection Spectroscopy
title_fullStr Infrared Optical Functions of Water Retrieved Using Attenuated Total Reflection Spectroscopy
title_full_unstemmed Infrared Optical Functions of Water Retrieved Using Attenuated Total Reflection Spectroscopy
title_short Infrared Optical Functions of Water Retrieved Using Attenuated Total Reflection Spectroscopy
title_sort infrared optical functions of water retrieved using attenuated total reflection spectroscopy
topic Submitted Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9903249/
https://www.ncbi.nlm.nih.gov/pubmed/36085565
http://dx.doi.org/10.1177/00037028221128813
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