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


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2021-09-07

AUTHORS

Alexei Vorobiev, Nicolò Paracini, Marité Cárdenas, Max Wolff

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. More... »

PAGES

17786

Identifiers

URI

http://scigraph.springernature.com/pub.10.1038/s41598-021-97112-x

DOI

http://dx.doi.org/10.1038/s41598-021-97112-x

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1140940084

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/34493764


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