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Ordering phenomena in confined fluids

English title Ordering phenomena in confined fluids
Applicant van der Veen Friso
Number 120350
Funding scheme Project funding (Div. I-III)
Research institution Paul Scherrer Institut
Institution of higher education Paul Scherrer Institute - PSI
Main discipline Condensed Matter Physics
Start/End 01.05.2008 - 30.04.2009
Approved amount 57'450.00
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Keywords (5)

Confined fluids; Solid-liquid interfaces; Synchrotron X-ray scattering; Complex fluids; Surface forces apparatus (SFA)

Lay Summary (English)

Lead
Lay summary
Confinement-induced ordering phenomena in fluids are studied. We consider molecular fluids confined by two opposing surfaces at nanometer distance. These systems serve as a model for a lubricated contact. It has been conjectured that the lubricating properties of confined fluids change dramatically because of structural ordering effects in the fluid, occurring when the distance between the surfaces becomes less than a few molecule (particle) diameters. The prime aim of our studies is to test this hypothesis. The fluid's structures are investigated with the use of synchrotron X-ray diffraction. Recently we realized a variable gap in the range of 1-10 nanometer and we demonstrated the feasibility of diffraction from a liquid confined within a volume of no more than a few femtoliter.
Direct link to Lay Summary Last update: 21.02.2013

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Number Title Start Funding scheme
105351 Ordering phenomena in confined fluids 01.10.2004 Project funding (Div. I-III)

Abstract

Confinement-induced ordering phenomena in fluids are studied. We consider molecular fluids confined by two opposing surfaces at nanometer distance. These systems serve as a model for a lubricated contact. It has been conjectured that the lubricating properties of confined fluids change dramatically because of structural ordering effects in the fluid, occurring when the distance between the surfaces becomes less than a few molecule (particle) diameters. The prime aim of our studies is to test this hypothesis. The fluid's structures are investigated with the use of synchrotron X-ray diffraction. Recently we realized a variable gap in the range of 1-10 nanometer and we demonstrated the feasibility of diffraction from a liquid confined within a volume of no more than a few femtoliter.
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