2012
DOI: 10.1017/jfm.2012.295
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Delaying the onset of dynamic wetting failure through meniscus confinement

Abstract: Dynamic wetting is crucial to processes where liquid displaces another fluid along a solid surface, such as the deposition of a coating liquid onto a moving substrate. Numerous studies report the failure of dynamic wetting past some critical process speed. However, the hydrodynamic factors that influence the transition to wetting failure remain poorly understood from an empirical and theoretical perspective. The objective of this investigation is to determine the effect of meniscus confinement on the onset of … Show more

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Cited by 56 publications
(98 citation statements)
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“…It was found that a PET mask placed over the interior plate greatly reduces adhesive forces that otherwise result from this interaction (figure 5). Similar to findings from our prior work (Vandre et al 2012), critical speeds appear to be independent of P app when the meniscus is located in the gap formed between the mask and substrate (figure 5a). Wetting characteristics, including U crit , become sensitive to changes in P app when the meniscus is positioned near the mask corner (figure 5b).…”
Section: Experimental Methodssupporting
confidence: 88%
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“…It was found that a PET mask placed over the interior plate greatly reduces adhesive forces that otherwise result from this interaction (figure 5). Similar to findings from our prior work (Vandre et al 2012), critical speeds appear to be independent of P app when the meniscus is located in the gap formed between the mask and substrate (figure 5a). Wetting characteristics, including U crit , become sensitive to changes in P app when the meniscus is positioned near the mask corner (figure 5b).…”
Section: Experimental Methodssupporting
confidence: 88%
“…This sequence portrays air-film thickness variations that propagate across the meniscus, nucleating rupture sites that ultimately cause air-bubble entrainment. Recorded critical speeds and air-film sizes compare well against predictions from the computational model used in our prior work (Vandre et al 2012(Vandre et al , 2013, further supporting a hydrodynamic mechanism for the onset of air entrainment.…”
Section: Introductionsupporting
confidence: 71%
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