Duru, Paul and Hallez, Yannick
A Three-Step Scenario Involved in Particle Capture on a Pore Edge.
(2015)
Langmuir, 31 (30). 8310-8317. ISSN 0743-7463
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(Document in English)
PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader 287kB |
Official URL: http://dx.doi.org/10.1021/acs.langmuir.5b01298
Abstract
A scenario is proposed to describe the capture of a spherical particle around a cylindrical pore. This geometry, “ideal” as far as the problem of particle capture on a filtration membrane is concerned, is clearly relevant in view of the pore-scale geometry of nucleopore or microsieve filtration membranes, and also of some microfluidic systems used to perform fluid−particle separation. The present scenario consists of three successive steps: particle deposition on the membrane away from the pore, subsequent reentrainment of some of the deposited particles by rolling on the membrane surface, and final arrest by a stabilizing van der Waals torque when the particle rolls over the pore edge. A modeling of these three steps requires the hydrodynamic and physicochemical particle−membrane interactions to be detailed close to the singular pore edge region and raises questions concerning the role of particle surface roughness. The relevance and robustness of such of a scenario for rough micrometer-sized latex particles is emphasized and comparisons are made with existing experimental data.
Item Type: | Article |
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Additional Information: | Thanks to American Chemical Society editor. The definitive version is available at http://pubs.acs.org/ The original PDF of the article can be found at Langmuir website : http://pubs.acs.org/journal/langd5 |
HAL Id: | hal-01223261 |
Audience (journal): | International peer-reviewed journal |
Uncontrolled Keywords: | |
Institution: | French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE) Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE) Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE) |
Laboratory name: | |
Statistics: | download |
Deposited On: | 28 Oct 2015 10:19 |
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