Π-GISANS: probing lateral structures with a fan shaped beam

Abstract We have performed grazing incidence neutron small angle scattering using a fan shaped incident beam focused along one dimension. This allows significantly reduced counting times for measurements of lateral correlations parallel to an interface or in a thin film where limited depth resolutio...

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Autores principales:	Alexei Vorobiev, Nicolò Paracini, Marité Cárdenas, Max Wolff
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/1a604e3b238f4107b298de8442fa92f0
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spelling	oai:doaj.org-article:1a604e3b238f4107b298de8442fa92f02021-12-02T14:58:46ZΠ-GISANS: probing lateral structures with a fan shaped beam10.1038/s41598-021-97112-x2045-2322https://doaj.org/article/1a604e3b238f4107b298de8442fa92f02021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-97112-xhttps://doaj.org/toc/2045-2322Abstract We have performed grazing incidence neutron small angle scattering using a fan shaped incident beam focused along one dimension. This allows significantly reduced counting times for measurements of lateral correlations parallel to an interface or in a thin film where limited depth resolution is required. We resolve the structure factor of iron inclusions in aluminium oxide and show that the ordering of silica particles deposited on a silicon substrate depends on their size. We report hexagonal packing for 50 nm but not for 200 nm silica spheres deposited by a modified Langmuir-Schaefer method on a silicon substrate. For the 200 nm particles we extract the particles shape from the form factor. Moreover, we report dense packing of the particles spread on a free water surface. We name this method π-GISANS to highlight that it differs from GISANS as it gives lateral information while averaging the in-depth structure.Alexei VorobievNicolò ParaciniMarité CárdenasMax WolffNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Alexei Vorobiev Nicolò Paracini Marité Cárdenas Max Wolff Π-GISANS: probing lateral structures with a fan shaped beam
description	Abstract We have performed grazing incidence neutron small angle scattering using a fan shaped incident beam focused along one dimension. This allows significantly reduced counting times for measurements of lateral correlations parallel to an interface or in a thin film where limited depth resolution is required. We resolve the structure factor of iron inclusions in aluminium oxide and show that the ordering of silica particles deposited on a silicon substrate depends on their size. We report hexagonal packing for 50 nm but not for 200 nm silica spheres deposited by a modified Langmuir-Schaefer method on a silicon substrate. For the 200 nm particles we extract the particles shape from the form factor. Moreover, we report dense packing of the particles spread on a free water surface. We name this method π-GISANS to highlight that it differs from GISANS as it gives lateral information while averaging the in-depth structure.
format	article
author	Alexei Vorobiev Nicolò Paracini Marité Cárdenas Max Wolff
author_facet	Alexei Vorobiev Nicolò Paracini Marité Cárdenas Max Wolff
author_sort	Alexei Vorobiev
title	Π-GISANS: probing lateral structures with a fan shaped beam
title_short	Π-GISANS: probing lateral structures with a fan shaped beam
title_full	Π-GISANS: probing lateral structures with a fan shaped beam
title_fullStr	Π-GISANS: probing lateral structures with a fan shaped beam
title_full_unstemmed	Π-GISANS: probing lateral structures with a fan shaped beam
title_sort	π-gisans: probing lateral structures with a fan shaped beam
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/1a604e3b238f4107b298de8442fa92f0
work_keys_str_mv	AT alexeivorobiev pgisansprobinglateralstructureswithafanshapedbeam AT nicoloparacini pgisansprobinglateralstructureswithafanshapedbeam AT maritecardenas pgisansprobinglateralstructureswithafanshapedbeam AT maxwolff pgisansprobinglateralstructureswithafanshapedbeam
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Π-GISANS: probing lateral structures with a fan shaped beam

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