Engineering self-organising helium bubble lattices in tungsten

Abstract The self-organisation of void and gas bubbles in solids into superlattices is an intriguing nanoscale phenomenon. Despite the discovery of these lattices 45 years ago, the atomistics behind the ordering mechanisms responsible for the formation of these nanostructures are yet to be fully elu...

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Autores principales:	R. W. Harrison, G. Greaves, J. A. Hinks, S. E. Donnelly
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b7e385e3b64a4ff3919af8101a4f12c1
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id	oai:doaj.org-article:b7e385e3b64a4ff3919af8101a4f12c1
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spelling	oai:doaj.org-article:b7e385e3b64a4ff3919af8101a4f12c12021-12-02T12:32:39ZEngineering self-organising helium bubble lattices in tungsten10.1038/s41598-017-07711-w2045-2322https://doaj.org/article/b7e385e3b64a4ff3919af8101a4f12c12017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07711-whttps://doaj.org/toc/2045-2322Abstract The self-organisation of void and gas bubbles in solids into superlattices is an intriguing nanoscale phenomenon. Despite the discovery of these lattices 45 years ago, the atomistics behind the ordering mechanisms responsible for the formation of these nanostructures are yet to be fully elucidated. Here we report on the direct observation via transmission electron microscopy of the formation of bubble lattices under He ion bombardment. By careful control of the irradiation conditions, it has been possible to engineer the bubble size and spacing of the superlattice leading to important conclusions about the significance of vacancy supply in determining the physical characteristics of the system. Furthermore, no bubble lattice alignment was observed in the <111> directions pointing to a key driving mechanism for the formation of these ordered nanostructures being the two-dimensional diffusion of self-interstitial atoms.R. W. HarrisonG. GreavesJ. A. HinksS. E. DonnellyNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q R. W. Harrison G. Greaves J. A. Hinks S. E. Donnelly Engineering self-organising helium bubble lattices in tungsten
description	Abstract The self-organisation of void and gas bubbles in solids into superlattices is an intriguing nanoscale phenomenon. Despite the discovery of these lattices 45 years ago, the atomistics behind the ordering mechanisms responsible for the formation of these nanostructures are yet to be fully elucidated. Here we report on the direct observation via transmission electron microscopy of the formation of bubble lattices under He ion bombardment. By careful control of the irradiation conditions, it has been possible to engineer the bubble size and spacing of the superlattice leading to important conclusions about the significance of vacancy supply in determining the physical characteristics of the system. Furthermore, no bubble lattice alignment was observed in the <111> directions pointing to a key driving mechanism for the formation of these ordered nanostructures being the two-dimensional diffusion of self-interstitial atoms.
format	article
author	R. W. Harrison G. Greaves J. A. Hinks S. E. Donnelly
author_facet	R. W. Harrison G. Greaves J. A. Hinks S. E. Donnelly
author_sort	R. W. Harrison
title	Engineering self-organising helium bubble lattices in tungsten
title_short	Engineering self-organising helium bubble lattices in tungsten
title_full	Engineering self-organising helium bubble lattices in tungsten
title_fullStr	Engineering self-organising helium bubble lattices in tungsten
title_full_unstemmed	Engineering self-organising helium bubble lattices in tungsten
title_sort	engineering self-organising helium bubble lattices in tungsten
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/b7e385e3b64a4ff3919af8101a4f12c1
work_keys_str_mv	AT rwharrison engineeringselforganisingheliumbubblelatticesintungsten AT ggreaves engineeringselforganisingheliumbubblelatticesintungsten AT jahinks engineeringselforganisingheliumbubblelatticesintungsten AT sedonnelly engineeringselforganisingheliumbubblelatticesintungsten
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Engineering self-organising helium bubble lattices in tungsten

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