Capillary filling in patterned channels

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dc.creatorKusumaatmaja, H.
dc.creatorPooley, C. M.
dc.creatorGirardo, S.
dc.creatorPisignano, D.
dc.creatorYeomans, J. M.
dc.date2008-05-27
dc.date.accessioned2026-07-07T10:04:48Z
dc.date.available2026-07-07T10:04:48Z
dc.descriptionWe show how the capillary filling of microchannels is affected by posts or ridges on the sides of the channels. Ridges perpendicular to the flow direction introduce contact line pinning which slows, or sometimes prevents, filling; whereas ridges parallel to the flow provide extra surface which may enhances filling. Patterning the microchannel surface with square posts has little effect on the ability of a channel to fill for equilibrium contact angle $θ_e \lesssim 30^{\mathrm{o}}$. For $θ_e \gtrsim 60^{\mathrm{o}}$, however, even a small number of posts can pin the advancing liquid front.
dc.description4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/0805.4231
dc.identifierhttp://arxiv.org/abs/0805.4231
dc.identifierPhysical Review E 77, 067301 (2008)
dc.identifierdoi:10.1103/PhysRevE.77.067301
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/169814
dc.subjectFluid Dynamics
dc.subjectMaterials Science
dc.subjectSoft Condensed Matter
dc.titleCapillary filling in patterned channels
dc.typetext

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