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Macroscopic nucleation phenomena in continuum media with long-range interactions
Nucleation, commonly associated with discontinuous transformations between metastable and stable phases, is crucial in fields as diverse as atmospheric science and nanoscale electronics. Traditionally, it is considered a microscopic process (at most nano-meter), implying the formation of a microscop...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2011
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3240980/ https://www.ncbi.nlm.nih.gov/pubmed/22355677 http://dx.doi.org/10.1038/srep00162 |
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author | Nishino, Masamichi Enachescu, Cristian Miyashita, Seiji Rikvold, Per Arne Boukheddaden, Kamel Varret, François |
author_facet | Nishino, Masamichi Enachescu, Cristian Miyashita, Seiji Rikvold, Per Arne Boukheddaden, Kamel Varret, François |
author_sort | Nishino, Masamichi |
collection | PubMed |
description | Nucleation, commonly associated with discontinuous transformations between metastable and stable phases, is crucial in fields as diverse as atmospheric science and nanoscale electronics. Traditionally, it is considered a microscopic process (at most nano-meter), implying the formation of a microscopic nucleus of the stable phase. Here we show for the first time, that considering long-range interactions mediated by elastic distortions, nucleation can be a macroscopic process, with the size of the critical nucleus proportional to the total system size. This provides a new concept of “macroscopic barrier-crossing nucleation”. We demonstrate the effect in molecular dynamics simulations of a model spin-crossover system with two molecular states of different sizes, causing elastic distortions. |
format | Online Article Text |
id | pubmed-3240980 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2011 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-32409802011-12-22 Macroscopic nucleation phenomena in continuum media with long-range interactions Nishino, Masamichi Enachescu, Cristian Miyashita, Seiji Rikvold, Per Arne Boukheddaden, Kamel Varret, François Sci Rep Article Nucleation, commonly associated with discontinuous transformations between metastable and stable phases, is crucial in fields as diverse as atmospheric science and nanoscale electronics. Traditionally, it is considered a microscopic process (at most nano-meter), implying the formation of a microscopic nucleus of the stable phase. Here we show for the first time, that considering long-range interactions mediated by elastic distortions, nucleation can be a macroscopic process, with the size of the critical nucleus proportional to the total system size. This provides a new concept of “macroscopic barrier-crossing nucleation”. We demonstrate the effect in molecular dynamics simulations of a model spin-crossover system with two molecular states of different sizes, causing elastic distortions. Nature Publishing Group 2011-11-21 /pmc/articles/PMC3240980/ /pubmed/22355677 http://dx.doi.org/10.1038/srep00162 Text en Copyright © 2011, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-sa/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-ShareALike 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/ |
spellingShingle | Article Nishino, Masamichi Enachescu, Cristian Miyashita, Seiji Rikvold, Per Arne Boukheddaden, Kamel Varret, François Macroscopic nucleation phenomena in continuum media with long-range interactions |
title | Macroscopic nucleation phenomena in continuum media with long-range
interactions |
title_full | Macroscopic nucleation phenomena in continuum media with long-range
interactions |
title_fullStr | Macroscopic nucleation phenomena in continuum media with long-range
interactions |
title_full_unstemmed | Macroscopic nucleation phenomena in continuum media with long-range
interactions |
title_short | Macroscopic nucleation phenomena in continuum media with long-range
interactions |
title_sort | macroscopic nucleation phenomena in continuum media with long-range
interactions |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3240980/ https://www.ncbi.nlm.nih.gov/pubmed/22355677 http://dx.doi.org/10.1038/srep00162 |
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