Towards a neutron and X-ray reflectometry environment for the study of solid–liquid interfaces under shear

Abstract A novel neutron and X-ray reflectometry sample environment is presented for the study of surface-active molecules at solid–liquid interfaces under shear. Neutron reflectometry was successfully used to characterise the iron oxide–dodecane interface at a shear rate of $$7.0\times {}10^{2}$$ 7...

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Autores principales:	Alexander J. Armstrong, Thomas M. McCoy, Rebecca J. L. Welbourn, Robert Barker, Jonathan L. Rawle, Beatrice Cattoz, Peter J. Dowding, Alexander F. Routh
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/7565c3acbf4a40e99fe21839b66079b7
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spelling	oai:doaj.org-article:7565c3acbf4a40e99fe21839b66079b72021-12-02T15:37:58ZTowards a neutron and X-ray reflectometry environment for the study of solid–liquid interfaces under shear10.1038/s41598-021-89189-12045-2322https://doaj.org/article/7565c3acbf4a40e99fe21839b66079b72021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-89189-1https://doaj.org/toc/2045-2322Abstract A novel neutron and X-ray reflectometry sample environment is presented for the study of surface-active molecules at solid–liquid interfaces under shear. Neutron reflectometry was successfully used to characterise the iron oxide–dodecane interface at a shear rate of $$7.0\times {}10^{2}$$ 7.0 × 10 2 $$\hbox {s}^{-1}$$ s - 1 using a combination of conventional reflectometry theory coupled with the summation of reflected intensities to describe reflectivity from thicker films. Additionally, the structure adopted by glycerol monooleate (GMO), an Organic Friction Modifier, when adsorbed at the iron oxide–dodecane interface at a shear rate of $$7.0\times {}10^{2}$$ 7.0 × 10 2 $$\hbox {s}^{-1}$$ s - 1 was studied. It was found that GMO forms a surface layer that appears unaltered by the effect of shear, where the thickness of the GMO layer was found to be $$24.3^{+9.9}_{-10.2}$$ 24 . 3 - 10.2 + 9.9 Å under direct shear at $$7.0\times {}10^{2}$$ 7.0 × 10 2 $$\hbox {s}^{-1}$$ s - 1 and $$25.8^{+4.4}_{-5.2}$$ 25 . 8 - 5.2 + 4.4 Å when not directly under shear. Finally, a model to analyse X-ray reflectometry data collected with the sample environment is also described and applied to data collected at $$3.0\times {}10^{3}$$ 3.0 × 10 3 $$\hbox {s}^{-1}$$ s - 1 .Alexander J. ArmstrongThomas M. McCoyRebecca J. L. WelbournRobert BarkerJonathan L. RawleBeatrice CattozPeter J. DowdingAlexander F. RouthNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Alexander J. Armstrong Thomas M. McCoy Rebecca J. L. Welbourn Robert Barker Jonathan L. Rawle Beatrice Cattoz Peter J. Dowding Alexander F. Routh Towards a neutron and X-ray reflectometry environment for the study of solid–liquid interfaces under shear
description	Abstract A novel neutron and X-ray reflectometry sample environment is presented for the study of surface-active molecules at solid–liquid interfaces under shear. Neutron reflectometry was successfully used to characterise the iron oxide–dodecane interface at a shear rate of $$7.0\times {}10^{2}$$ 7.0 × 10 2 $$\hbox {s}^{-1}$$ s - 1 using a combination of conventional reflectometry theory coupled with the summation of reflected intensities to describe reflectivity from thicker films. Additionally, the structure adopted by glycerol monooleate (GMO), an Organic Friction Modifier, when adsorbed at the iron oxide–dodecane interface at a shear rate of $$7.0\times {}10^{2}$$ 7.0 × 10 2 $$\hbox {s}^{-1}$$ s - 1 was studied. It was found that GMO forms a surface layer that appears unaltered by the effect of shear, where the thickness of the GMO layer was found to be $$24.3^{+9.9}_{-10.2}$$ 24 . 3 - 10.2 + 9.9 Å under direct shear at $$7.0\times {}10^{2}$$ 7.0 × 10 2 $$\hbox {s}^{-1}$$ s - 1 and $$25.8^{+4.4}_{-5.2}$$ 25 . 8 - 5.2 + 4.4 Å when not directly under shear. Finally, a model to analyse X-ray reflectometry data collected with the sample environment is also described and applied to data collected at $$3.0\times {}10^{3}$$ 3.0 × 10 3 $$\hbox {s}^{-1}$$ s - 1 .
format	article
author	Alexander J. Armstrong Thomas M. McCoy Rebecca J. L. Welbourn Robert Barker Jonathan L. Rawle Beatrice Cattoz Peter J. Dowding Alexander F. Routh
author_facet	Alexander J. Armstrong Thomas M. McCoy Rebecca J. L. Welbourn Robert Barker Jonathan L. Rawle Beatrice Cattoz Peter J. Dowding Alexander F. Routh
author_sort	Alexander J. Armstrong
title	Towards a neutron and X-ray reflectometry environment for the study of solid–liquid interfaces under shear
title_short	Towards a neutron and X-ray reflectometry environment for the study of solid–liquid interfaces under shear
title_full	Towards a neutron and X-ray reflectometry environment for the study of solid–liquid interfaces under shear
title_fullStr	Towards a neutron and X-ray reflectometry environment for the study of solid–liquid interfaces under shear
title_full_unstemmed	Towards a neutron and X-ray reflectometry environment for the study of solid–liquid interfaces under shear
title_sort	towards a neutron and x-ray reflectometry environment for the study of solid–liquid interfaces under shear
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/7565c3acbf4a40e99fe21839b66079b7
work_keys_str_mv	AT alexanderjarmstrong towardsaneutronandxrayreflectometryenvironmentforthestudyofsolidliquidinterfacesundershear AT thomasmmccoy towardsaneutronandxrayreflectometryenvironmentforthestudyofsolidliquidinterfacesundershear AT rebeccajlwelbourn towardsaneutronandxrayreflectometryenvironmentforthestudyofsolidliquidinterfacesundershear AT robertbarker towardsaneutronandxrayreflectometryenvironmentforthestudyofsolidliquidinterfacesundershear AT jonathanlrawle towardsaneutronandxrayreflectometryenvironmentforthestudyofsolidliquidinterfacesundershear AT beatricecattoz towardsaneutronandxrayreflectometryenvironmentforthestudyofsolidliquidinterfacesundershear AT peterjdowding towardsaneutronandxrayreflectometryenvironmentforthestudyofsolidliquidinterfacesundershear AT alexanderfrouth towardsaneutronandxrayreflectometryenvironmentforthestudyofsolidliquidinterfacesundershear
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Towards a neutron and X-ray reflectometry environment for the study of solid–liquid interfaces under shear

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