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Retrieval of Size Distribution and Concentration of Au-Ag Alloy Nanospheroids by Spectral Extinction Method

In order to monitor the synthesis processes or characterize nanoparticles for application, a new method that allows in situ determination of the two-dimensional size distribution and concentration of Au-Ag alloy nanospheroids, based on their extinction spectrum, is developed. Non-negative Tikhonov r...

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Autores principales: Zheng, Yuxia, Tuersun, Paerhatijiang, Abulaiti, Remilai, Ma, Dengpan, Cheng, Long
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8911737/
https://www.ncbi.nlm.nih.gov/pubmed/35269008
http://dx.doi.org/10.3390/ma15051778
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author Zheng, Yuxia
Tuersun, Paerhatijiang
Abulaiti, Remilai
Ma, Dengpan
Cheng, Long
author_facet Zheng, Yuxia
Tuersun, Paerhatijiang
Abulaiti, Remilai
Ma, Dengpan
Cheng, Long
author_sort Zheng, Yuxia
collection PubMed
description In order to monitor the synthesis processes or characterize nanoparticles for application, a new method that allows in situ determination of the two-dimensional size distribution and concentration of Au-Ag alloy nanospheroids, based on their extinction spectrum, is developed. Non-negative Tikhonov regularization and T-matrix method were used to solve the inverse problem. The effects of the two-dimensional size steps, wavelength range, and measurement errors of extinction spectrum on the retrieval results were analyzed to verify the feasibility and accuracy of the retrieval algorithm. Through comparative analysis, the size steps and wavelength range that make the retrieval error smaller are found. After adding 0.1% random noise to the extinction spectrum, a small variation in the retrieval error of the mean size is observed. The results showed that the error of the mean size is smaller than 2% and the error of the concentration is smaller than 3%. This method is simple, fast, cheap, nondestructive, and can be done in situ during the growth process of nanoparticles.
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spelling pubmed-89117372022-03-11 Retrieval of Size Distribution and Concentration of Au-Ag Alloy Nanospheroids by Spectral Extinction Method Zheng, Yuxia Tuersun, Paerhatijiang Abulaiti, Remilai Ma, Dengpan Cheng, Long Materials (Basel) Article In order to monitor the synthesis processes or characterize nanoparticles for application, a new method that allows in situ determination of the two-dimensional size distribution and concentration of Au-Ag alloy nanospheroids, based on their extinction spectrum, is developed. Non-negative Tikhonov regularization and T-matrix method were used to solve the inverse problem. The effects of the two-dimensional size steps, wavelength range, and measurement errors of extinction spectrum on the retrieval results were analyzed to verify the feasibility and accuracy of the retrieval algorithm. Through comparative analysis, the size steps and wavelength range that make the retrieval error smaller are found. After adding 0.1% random noise to the extinction spectrum, a small variation in the retrieval error of the mean size is observed. The results showed that the error of the mean size is smaller than 2% and the error of the concentration is smaller than 3%. This method is simple, fast, cheap, nondestructive, and can be done in situ during the growth process of nanoparticles. MDPI 2022-02-26 /pmc/articles/PMC8911737/ /pubmed/35269008 http://dx.doi.org/10.3390/ma15051778 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zheng, Yuxia
Tuersun, Paerhatijiang
Abulaiti, Remilai
Ma, Dengpan
Cheng, Long
Retrieval of Size Distribution and Concentration of Au-Ag Alloy Nanospheroids by Spectral Extinction Method
title Retrieval of Size Distribution and Concentration of Au-Ag Alloy Nanospheroids by Spectral Extinction Method
title_full Retrieval of Size Distribution and Concentration of Au-Ag Alloy Nanospheroids by Spectral Extinction Method
title_fullStr Retrieval of Size Distribution and Concentration of Au-Ag Alloy Nanospheroids by Spectral Extinction Method
title_full_unstemmed Retrieval of Size Distribution and Concentration of Au-Ag Alloy Nanospheroids by Spectral Extinction Method
title_short Retrieval of Size Distribution and Concentration of Au-Ag Alloy Nanospheroids by Spectral Extinction Method
title_sort retrieval of size distribution and concentration of au-ag alloy nanospheroids by spectral extinction method
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8911737/
https://www.ncbi.nlm.nih.gov/pubmed/35269008
http://dx.doi.org/10.3390/ma15051778
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