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Burn Time of Metal Nanoparticles

This article will discuss the combustion of metal nanoparticles and explain the burn time dependence on particle size. In contrary to common belief in the power law (t(b)~d(0.3)), which, in our knowledge, is simply an experimental fit to data, we propose the logarithmic law (t(b)~ln(d)) that describ...

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Detalles Bibliográficos
Autor principal: Altman, Igor
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6539649/
https://www.ncbi.nlm.nih.gov/pubmed/31035524
http://dx.doi.org/10.3390/ma12091368
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author Altman, Igor
author_facet Altman, Igor
author_sort Altman, Igor
collection PubMed
description This article will discuss the combustion of metal nanoparticles and explain the burn time dependence on particle size. In contrary to common belief in the power law (t(b)~d(0.3)), which, in our knowledge, is simply an experimental fit to data, we propose the logarithmic law (t(b)~ln(d)) that describes well the known results on nano-aluminum combustion. We derived the logarithmic dependence from a simple model taking into account the energy balance on the surface of a burning metal nanoparticle. The model in question is based on the small energy accommodation coefficient (EAC), which was recently utilized to solve experimental puzzles such as the significant temperature gap between the burning nanoparticle and the environment. A discussion on EAC, which value is important for the correct modeling of nanoparticle combustion, is also included. A way to generalize the considered combustion model is suggested.
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spelling pubmed-65396492019-06-05 Burn Time of Metal Nanoparticles Altman, Igor Materials (Basel) Article This article will discuss the combustion of metal nanoparticles and explain the burn time dependence on particle size. In contrary to common belief in the power law (t(b)~d(0.3)), which, in our knowledge, is simply an experimental fit to data, we propose the logarithmic law (t(b)~ln(d)) that describes well the known results on nano-aluminum combustion. We derived the logarithmic dependence from a simple model taking into account the energy balance on the surface of a burning metal nanoparticle. The model in question is based on the small energy accommodation coefficient (EAC), which was recently utilized to solve experimental puzzles such as the significant temperature gap between the burning nanoparticle and the environment. A discussion on EAC, which value is important for the correct modeling of nanoparticle combustion, is also included. A way to generalize the considered combustion model is suggested. MDPI 2019-04-26 /pmc/articles/PMC6539649/ /pubmed/31035524 http://dx.doi.org/10.3390/ma12091368 Text en © 2019 by the authors and USA Government; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons by Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Altman, Igor
Burn Time of Metal Nanoparticles
title Burn Time of Metal Nanoparticles
title_full Burn Time of Metal Nanoparticles
title_fullStr Burn Time of Metal Nanoparticles
title_full_unstemmed Burn Time of Metal Nanoparticles
title_short Burn Time of Metal Nanoparticles
title_sort burn time of metal nanoparticles
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6539649/
https://www.ncbi.nlm.nih.gov/pubmed/31035524
http://dx.doi.org/10.3390/ma12091368
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