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Anisotropic Pair Correlations and Structure Factors of Confined Hard-Sphere Fluids: An Experimental and Theoretical Study
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).ORCID iD: 0000-0003-1702-5645
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Number of Authors: 72012 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 108, no 3, article id 037802Article in journal (Refereed) Published
Abstract [en]

We address the fundamental question: how are pair correlations and structure factors of hard-sphere fluids affected by confinement between hard planar walls at close distance? For this purpose, we combine x-ray scattering from colloid-filled nanofluidic channel arrays and first-principles inhomogeneous liquid-state theory within the anisotropic Percus-Yevick approximation. The experimental and theoretical data are in remarkable agreement at the pair-correlation level, providing the first quantitative experimental verification of the theoretically predicted confinement-induced anisotropy of the pair-correlation functions for the fluid. The description of confined fluids at this level provides, in the general case, important insights into the mechanisms of particle-particle interactions in dense fluids under confinement.

Place, publisher, year, edition, pages
2012. Vol. 108, no 3, article id 037802
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Physical Sciences
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URN: urn:nbn:se:su:diva-162427DOI: 10.1103/PhysRevLett.108.037802ISI: 000299328500025PubMedID: 22400786OAI: oai:DiVA.org:su-162427DiVA, id: diva2:1267972
Available from: 2018-12-04 Created: 2018-12-04 Last updated: 2020-02-20Bibliographically approved

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Nygard, K.Sarman, StenChodankar, S.Buitenhuis, J.
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