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Size-dependent stability of ultra-small α-/β-phase tin nanocrystals synthesized by microplasma
Nanocrystals sometimes adopt unusual crystal structure configurations in order to maintain structural stability with increasingly large surface-to-volume ratios. The understanding of these transformations is of great scientific interest and represents an opportunity to achieve beneficial materials p...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6379433/ https://www.ncbi.nlm.nih.gov/pubmed/30778052 http://dx.doi.org/10.1038/s41467-019-08661-9 |
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author | Haq, Atta Ul Askari, Sadegh McLister, Anna Rawlinson, Sean Davis, James Chakrabarti, Supriya Svrcek, Vladimir Maguire, Paul Papakonstantinou, Pagona Mariotti, Davide |
author_facet | Haq, Atta Ul Askari, Sadegh McLister, Anna Rawlinson, Sean Davis, James Chakrabarti, Supriya Svrcek, Vladimir Maguire, Paul Papakonstantinou, Pagona Mariotti, Davide |
author_sort | Haq, Atta Ul |
collection | PubMed |
description | Nanocrystals sometimes adopt unusual crystal structure configurations in order to maintain structural stability with increasingly large surface-to-volume ratios. The understanding of these transformations is of great scientific interest and represents an opportunity to achieve beneficial materials properties resulting from different crystal arrangements. Here, the phase transformation from α to β phases of tin (Sn) nanocrystals is investigated in nanocrystals with diameters ranging from 6.1 to 1.6 nm. Ultra-small Sn nanocrystals are achieved through our highly non-equilibrium plasma process operated at atmospheric pressures. Larger nanocrystals adopt the β-Sn tetragonal structure, while smaller nanocrystals show stability with the α-Sn diamond cubic structure. Synthesis at other conditions produce nanocrystals with mean diameters within the range 2–3 nm, which exhibit mixed phases. This work represents an important contribution to understand structural stability at the nanoscale and the possibility of achieving phases of relevance for many applications. |
format | Online Article Text |
id | pubmed-6379433 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-63794332019-02-21 Size-dependent stability of ultra-small α-/β-phase tin nanocrystals synthesized by microplasma Haq, Atta Ul Askari, Sadegh McLister, Anna Rawlinson, Sean Davis, James Chakrabarti, Supriya Svrcek, Vladimir Maguire, Paul Papakonstantinou, Pagona Mariotti, Davide Nat Commun Article Nanocrystals sometimes adopt unusual crystal structure configurations in order to maintain structural stability with increasingly large surface-to-volume ratios. The understanding of these transformations is of great scientific interest and represents an opportunity to achieve beneficial materials properties resulting from different crystal arrangements. Here, the phase transformation from α to β phases of tin (Sn) nanocrystals is investigated in nanocrystals with diameters ranging from 6.1 to 1.6 nm. Ultra-small Sn nanocrystals are achieved through our highly non-equilibrium plasma process operated at atmospheric pressures. Larger nanocrystals adopt the β-Sn tetragonal structure, while smaller nanocrystals show stability with the α-Sn diamond cubic structure. Synthesis at other conditions produce nanocrystals with mean diameters within the range 2–3 nm, which exhibit mixed phases. This work represents an important contribution to understand structural stability at the nanoscale and the possibility of achieving phases of relevance for many applications. Nature Publishing Group UK 2019-02-18 /pmc/articles/PMC6379433/ /pubmed/30778052 http://dx.doi.org/10.1038/s41467-019-08661-9 Text en © The Author(s) 2019 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Haq, Atta Ul Askari, Sadegh McLister, Anna Rawlinson, Sean Davis, James Chakrabarti, Supriya Svrcek, Vladimir Maguire, Paul Papakonstantinou, Pagona Mariotti, Davide Size-dependent stability of ultra-small α-/β-phase tin nanocrystals synthesized by microplasma |
title | Size-dependent stability of ultra-small α-/β-phase tin nanocrystals synthesized by microplasma |
title_full | Size-dependent stability of ultra-small α-/β-phase tin nanocrystals synthesized by microplasma |
title_fullStr | Size-dependent stability of ultra-small α-/β-phase tin nanocrystals synthesized by microplasma |
title_full_unstemmed | Size-dependent stability of ultra-small α-/β-phase tin nanocrystals synthesized by microplasma |
title_short | Size-dependent stability of ultra-small α-/β-phase tin nanocrystals synthesized by microplasma |
title_sort | size-dependent stability of ultra-small α-/β-phase tin nanocrystals synthesized by microplasma |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6379433/ https://www.ncbi.nlm.nih.gov/pubmed/30778052 http://dx.doi.org/10.1038/s41467-019-08661-9 |
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