000014536 001__ 14536
000014536 005__ 20161115100154.0
000014536 04107 $$aeng
000014536 046__ $$k2016-08-21
000014536 100__ $$aXiang, Yaolei
000014536 24500 $$aWetting transition of submerged structures under hydrostatic and flow conditions

000014536 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000014536 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000014536 506__ $$arestricted
000014536 520__ $$2eng$$aSuperhydrophobicity relies on the maintenance of air cushions on structured hydrophobic surfaces buried underwater. However, the water-air interfaces are subject to instabilities induced by various mechanisms, leading to the wetting transition from a Cassie-Baxter to Wenzel state. In this work, the wetting transition on submerged microtextures under a hydrostatic or flow condition is studied. Confocal microscopy technique is used to observe the dynamic evolution of the water-air interfaces. The whole wetting transition process is monitored, and the classic CB, Wenzel states and an intermediate metastable state are directly observed. A diffusion-based mode is developed to predict the evolution process of metastable states under both hydrostatic and flow conditions. The acceleration of air diffusion by a convection regime to is captured, which is well described by a scaling law. The current work reveals the underlying mechanism of wetting transition on submerged structures and provides a longevity prediction of underwater superhydrophobicity.

000014536 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000014536 653__ $$a

000014536 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000014536 720__ $$aXiang, Yaolei
000014536 8560_ $$ffischerc@itam.cas.cz
000014536 8564_ $$s154936$$uhttps://invenio.itam.cas.cz/record/14536/files/TS.FM06-3.02.pdf$$yOriginal version of the author's contribution as presented on CD,  page 800, code TS.FM06-3.02
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000014536 962__ $$r13812
000014536 980__ $$aPAPER