Mechanical Tuning of the Evaporation Rate of Liquid on Crossed Fibers

Boulogne, François; Sauret, Alban; Soh, Beatrice W.; Dressaire, Emilie; Stone, Howard A.

doi:10.1021/la505036t

Cited by 16 publications

(18 citation statements)

References 39 publications

(106 reference statements)

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“…This value needs to be compared to the evaporation rate from the flat surface of a glass filled with the same solution. In this aim, the evaporation flux from the surface is taken as purely diffusive and integrated on the length scale of the vapor concentration gradient 39 . This gives the evaporation rate from the surface: .…”

Section: Discussionmentioning

confidence: 99%

Evaporation of droplets in a Champagne wine aerosol

Ghabache

Liger-Belair

Antkowiak

et al. 2016

Sci Rep

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In a single glass of champagne about a million bubbles nucleate on the wall and rise towards the surface. When these bubbles reach the surface and rupture, they project a multitude of tiny droplets in the form of a particular aerosol holding a concentrate of wine aromas. Based on the model experiment of a single bubble bursting in idealized champagnes, the key features of the champagne aerosol are identified. In particular, we show that film drops, critical in sea spray for example, are here nonexistent. We then demonstrate that compared to a still wine, champagne fizz drastically enhances the transfer of liquid into the atmosphere. There, conditions on bubble radius and wine viscosity that optimize aerosol evaporation are provided. These results pave the way towards the fine tuning of flavor release during sparkling wine tasting, a major issue for the sparkling wine industry.

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Section: Discussionmentioning

confidence: 99%

Evaporation of droplets in a Champagne wine aerosol

Ghabache

Liger-Belair

Antkowiak

et al. 2016

Sci Rep

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“…Our results suggest that a system of fibers can be used to manipulate liquids on a micro scale. For example, by mechanically altering the angle and/or spacing distance between the fibers, or by triggering changes in the liquid volume through condensation or evaporation, [27,28] we can change the morphology adopted by the liquid on the fibers. Additionally, since the model that we have proposed is applicable to both perfectly and partially wetting liquids, we can consider using the transitions between wetting morphologies on fibers to estimate the contact angle of liquids on fibers.…”

Section: Discussionmentioning

confidence: 99%

Wetting morphologies on randomly oriented fibers

et al. 2015

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We characterize the different morphologies adopted by a drop of liquid placed on two randomly oriented fibers, which is a first step toward understanding the wetting of fibrous networks. The present work reviews previous modeling for parallel and touching crossed fibers and extends it to an arbitrary orientation of the fibers characterized by the tilting angle and the minimum spacing distance. Depending on the volume of liquid, the spacing distance between fibers and the angle between the fibers, we highlight that the liquid can adopt three different equilibrium morphologies: 1) a column morphology in which the liquid spreads between the fibers, 2) a mixed morphology where a drop grows at one end of the column or 3) a single drop located at the node. We capture the different morphologies observed using an analytical model that predicts the equilibrium configuration of the liquid based on the geometry of the fibers and the volume of liquid.

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“…We consider the characteristic length scale L of the vapor concentration gradient, which is related to the geometry of the system at long timescales [33,34]. We also denote V e as the typical value of the evaporation speed v e .…”

Section: Theoretical Backgroundmentioning

confidence: 99%

Coffee-stain growth dynamics on dry and wet surfaces

Boulogne

Ingremeau

Stone

2016

J. Phys.: Condens. Matter

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The drying of a drop containing particles often results in the accumulation of the particles at the contact line. In this work, we investigate the drying of an aqueous colloidal drop surrounded by a hydrogel that is also evaporating. We combine theoretical and experimental studies to understand how the surrounding vapor concentration affects the particle deposit during the constant radius evaporation mode. In addition to the common case of evaporation on an otherwise dry surface, we show that in a configuration where liquid is evaporating from a flat surface around the drop, the singularity of the evaporative flux at the contact line is suppressed and the drop evaporation is homogeneous. For both conditions, we derive the velocity field and we establish the temporal evolution of the number of particles accumulated at the contact line. We predict the growth dynamics of the stain and the drying timescales. Thus, dry and wet conditions are compared with experimental results and we highlight that only the dynamics is modified by the evaporation conditions, not the final accumulation at the contact line.

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Mechanical Tuning of the Evaporation Rate of Liquid on Crossed Fibers

Cited by 16 publications

References 39 publications

Evaporation of droplets in a Champagne wine aerosol

Evaporation of droplets in a Champagne wine aerosol

Wetting morphologies on randomly oriented fibers

Coffee-stain growth dynamics on dry and wet surfaces

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