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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MDPI AG
2022-02-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/5/1778 |
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| author | Yuxia Zheng Paerhatijiang Tuersun Remilai Abulaiti Dengpan Ma Long Cheng |
| author_facet | Yuxia Zheng Paerhatijiang Tuersun Remilai Abulaiti Dengpan Ma Long Cheng |
| author_sort | Yuxia Zheng |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-09T20:32:43Z |
| format | Article |
| id | doaj.art-19a4e27de1f34afba125e6c7b42608b9 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T20:32:43Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-19a4e27de1f34afba125e6c7b42608b92023-11-23T23:18:42ZengMDPI AGMaterials1996-19442022-02-01155177810.3390/ma15051778Retrieval of Size Distribution and Concentration of Au-Ag Alloy Nanospheroids by Spectral Extinction MethodYuxia Zheng0Paerhatijiang Tuersun1Remilai Abulaiti2Dengpan Ma3Long Cheng4Key Laboratory of Mineral Optical Functional Materials and Application, School of Physics and Electronic Engineering, Xinjiang Normal University, Urumqi 830054, ChinaKey Laboratory of Mineral Optical Functional Materials and Application, School of Physics and Electronic Engineering, Xinjiang Normal University, Urumqi 830054, ChinaKey Laboratory of Mineral Optical Functional Materials and Application, School of Physics and Electronic Engineering, Xinjiang Normal University, Urumqi 830054, ChinaKey Laboratory of Mineral Optical Functional Materials and Application, School of Physics and Electronic Engineering, Xinjiang Normal University, Urumqi 830054, ChinaKey Laboratory of Mineral Optical Functional Materials and Application, School of Physics and Electronic Engineering, Xinjiang Normal University, Urumqi 830054, ChinaIn 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.https://www.mdpi.com/1996-1944/15/5/1778spectral extinction methodcomposite nanoparticleslocalized surface plasmon resonanceT-matrixTikhonov regularizationinverse problem |
| spellingShingle | Yuxia Zheng Paerhatijiang Tuersun Remilai Abulaiti Dengpan Ma Long Cheng Retrieval of Size Distribution and Concentration of Au-Ag Alloy Nanospheroids by Spectral Extinction Method Materials spectral extinction method composite nanoparticles localized surface plasmon resonance T-matrix Tikhonov regularization inverse problem |
| 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 | spectral extinction method composite nanoparticles localized surface plasmon resonance T-matrix Tikhonov regularization inverse problem |
| url | https://www.mdpi.com/1996-1944/15/5/1778 |
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