Advancing contact lines on chemically patterned surfaces

Cubaud, Thomas; Fermigier, Marc

doi:10.1016/j.jcis.2003.08.008

Cited by 90 publications

(81 citation statements)

References 24 publications

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“…Several recent experimental results [14,15] for axisymmetric hemispherical droplets are consistent with our modified Cassie's law. They [14,15] found that the apparent contact angle satisfies the modified Cassie's law where the cosine of the apparent contact angle could be calculated from the average of the cosine of the local contact angle along the contour line rather than the average about the contact area.…”

Section: Discussionsupporting

confidence: 88%

“…Our modified Cassie's law states that the average of the local contact angle along the edge of droplet will be the observable apparent contact angle rather than the average over the contact area of the droplet. Several recent experimental works [14,15] support our modified Cassie's law.…”

Section: Introductionsupporting

confidence: 74%

“…So, we can recover the modified Cassie's law (15) again for the constant volume case as well as the constant pressure case.…”

Section: Drop In the Undersaturated Vapormentioning

confidence: 89%

“…This doubt is further reinforced by various recent experimental results [14,15] which became possible through the recent progress of micro and nano-scale fabrication of artificial surfaces.…”

Section: Introductionmentioning

confidence: 99%

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The validity of Cassie's law: A simple exercise using a simplified model

Iwamatsu

2006

Journal of Colloid and Interface Science

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The contact angle of a macroscopic droplet on a heterogeneous but flat substrate is studied using the interface displacement model which can lead to the augmented Young-Laplace equation. Droplets under the condition of constant volume as well as constant vapor pressure are considered. By assuming a cylindrical liquid-vapor surface (meniscus) and minimizing the total free energy of the interface displacement model, we derive an equation which is similar but different from the well known Cassie's law. Our modified Cassie's law is essentially the same as the formula obtained previously by Marmur [J.Colloid Interface Sci. 168, 40 (1994)]. A few consequences from this modified Cassie's law will be briefly described in the following sections of this paper. Several sets of recent experimental results seem to support the validity of our modified Cassie's law.

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Section: Discussionsupporting

confidence: 88%

Section: Introductionsupporting

confidence: 74%

“…So, we can recover the modified Cassie's law (15) again for the constant volume case as well as the constant pressure case.…”

Section: Drop In the Undersaturated Vapormentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

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The validity of Cassie's law: A simple exercise using a simplified model

Iwamatsu

2006

Journal of Colloid and Interface Science

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“…The dynamics of wetting on flat solid and liquid surfaces is quite well understood [10,11], however, despite its applicability, only a few experiments were performed on inhomogeneous, either patterned or disordered surfaces [12][13][14][40][41][42], while the dynamics of a receeding contact line remains almost unexplored. In spite of the apparent simplicity of the phenomenon, there are no simple, easily manageable models for describing it.…”

Section: Introductionmentioning

confidence: 99%

Kinetic roughening of a soft dewetting line under quenched disorder: A numerical study

Tyukodi¹,

Bréchet²,

Néda³

2014

Phys. Rev. E

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A molecular-dynamics type simulation method, which is suitable for investigating the dewetting dynamics of thin and viscous liquid layers, is discussed. The efficiency of the method is exemplified by studying a two-parameter depinning-like model defined on inhomogeneous solid surfaces. The morphology and the statistical properties of the contact line is mapped in the relevant parameter space, and as a result critical behavior in the vicinity of the depinning transition is revealed. The model allows for the tearing of the layer, which leads to a new propagation regime resulting in non-trivial collective behavior. The large deformations observed for the interface is a result of the interplay between the substrate inhomogeneities and the capillary forces.

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Sessile Droplets

Brakke

2012

The Physics of Microdroplets

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Advancing contact lines on chemically patterned surfaces

Cited by 90 publications

References 24 publications

The validity of Cassie's law: A simple exercise using a simplified model

The validity of Cassie's law: A simple exercise using a simplified model

Kinetic roughening of a soft dewetting line under quenched disorder: A numerical study

Sessile Droplets

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