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Fundamental insight into critical phenomena in condensation growth of nanoparticles in a flame
The paper deals with the gas-phase formation of nanoparticles that is a fundamental process responsible for the condensed matter in the Universe, which also attracts attention due to its involvement in the particle synthesis for various nanotechnology applications. Previously reported results on MgO...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9489868/ https://www.ncbi.nlm.nih.gov/pubmed/36127372 http://dx.doi.org/10.1038/s41598-022-20210-x |
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author | Altman, Igor Fomenko, Elena Agranovski, Igor E. |
author_facet | Altman, Igor Fomenko, Elena Agranovski, Igor E. |
author_sort | Altman, Igor |
collection | PubMed |
description | The paper deals with the gas-phase formation of nanoparticles that is a fundamental process responsible for the condensed matter in the Universe, which also attracts attention due to its involvement in the particle synthesis for various nanotechnology applications. Previously reported results on MgO nano-oxides formed by Mg combustion showed a unique phenomenon coined “the condensation stagnation” that is the occurrence of critical clusters with suppressed growth. Here we focus on the effect of an external ionizer on this condensation growth stagnation. We show that the condensation stagnation occurring in the Mg particle flame subjected to a positive ion flux is similar to that in the unaffected flame. In contrast, applying negative charging significantly influences the state of stagnation of the system, i.e., no critical clusters are observed in the products sampled from the flame. The discovered critical behavior of the state of stagnation is explained in terms of the heat transfer between the condensed MgO nanoparticles and the surrounding gas, which efficiency depends on the sign of the nanoparticle charge. This dependence of the heat transfer efficiency on the nanoparticle charge is a new fundamental effect that should become the basis for accurate modeling in two-phase high-temperature systems. |
format | Online Article Text |
id | pubmed-9489868 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-94898682022-09-22 Fundamental insight into critical phenomena in condensation growth of nanoparticles in a flame Altman, Igor Fomenko, Elena Agranovski, Igor E. Sci Rep Article The paper deals with the gas-phase formation of nanoparticles that is a fundamental process responsible for the condensed matter in the Universe, which also attracts attention due to its involvement in the particle synthesis for various nanotechnology applications. Previously reported results on MgO nano-oxides formed by Mg combustion showed a unique phenomenon coined “the condensation stagnation” that is the occurrence of critical clusters with suppressed growth. Here we focus on the effect of an external ionizer on this condensation growth stagnation. We show that the condensation stagnation occurring in the Mg particle flame subjected to a positive ion flux is similar to that in the unaffected flame. In contrast, applying negative charging significantly influences the state of stagnation of the system, i.e., no critical clusters are observed in the products sampled from the flame. The discovered critical behavior of the state of stagnation is explained in terms of the heat transfer between the condensed MgO nanoparticles and the surrounding gas, which efficiency depends on the sign of the nanoparticle charge. This dependence of the heat transfer efficiency on the nanoparticle charge is a new fundamental effect that should become the basis for accurate modeling in two-phase high-temperature systems. Nature Publishing Group UK 2022-09-20 /pmc/articles/PMC9489868/ /pubmed/36127372 http://dx.doi.org/10.1038/s41598-022-20210-x Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Altman, Igor Fomenko, Elena Agranovski, Igor E. Fundamental insight into critical phenomena in condensation growth of nanoparticles in a flame |
title | Fundamental insight into critical phenomena in condensation growth of nanoparticles in a flame |
title_full | Fundamental insight into critical phenomena in condensation growth of nanoparticles in a flame |
title_fullStr | Fundamental insight into critical phenomena in condensation growth of nanoparticles in a flame |
title_full_unstemmed | Fundamental insight into critical phenomena in condensation growth of nanoparticles in a flame |
title_short | Fundamental insight into critical phenomena in condensation growth of nanoparticles in a flame |
title_sort | fundamental insight into critical phenomena in condensation growth of nanoparticles in a flame |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9489868/ https://www.ncbi.nlm.nih.gov/pubmed/36127372 http://dx.doi.org/10.1038/s41598-022-20210-x |
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