Evaporation in a single channel in the presence of particles

Ghiringhelli, Elisa; Marcoux, Manuel; Geoffroy, Sandrine; Prat, Marc

doi:10.1016/j.colsurfa.2022.130432

Cited by 4 publications

(11 citation statements)

References 37 publications

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“…A consequence of the plasma treatment is the modification of the wettability properties of the materials. As reported in (17), the contact angle of water on untreated SUEX is approximately 75°. As indicated in Figure 2, the plasma treated SUEX becomes much more hydrophilic, with an equilibrium contact angle of 27.4° on average.…”

Section: Plasma Treatmentsupporting

confidence: 56%

Evaporation in the presence of particles in a model porous medium: impact of corner liquid films

Ghiringhelli,

Marcoux,

Geoffroy

et al. 2024

InterPore J

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Visualization experiments with a microfluidic channel network (micromodel) were performed to study evaporation in the presence of colloidal particles. Comparisons were then performed, changing the wetting properties of the micromodel thanks to a plasma treatment. It was found that the most hydrophilic micromodel led to a faster drying and a different final distribution of the deposited particles within the channel network compared to the less hydrophilic micromodel. This is explained by the impact of capillary liquid films forming in corners of the channels. The observations suggest that the liquid corner films form a better-connected sub-network in the case of the more hydrophilic network providing a pathway for the transport of particles. As indicated by the longer drying, the corner film subnetwork is less well-connected in the less hydrophilic network, which eventually leads to a quite different final particle deposit pattern.

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Section: Plasma Treatmentsupporting

confidence: 56%

Evaporation in the presence of particles in a model porous medium: impact of corner liquid films

Ghiringhelli,

Marcoux,

Geoffroy

et al. 2024

InterPore J

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“…Finally, the confined directional drying configuration described in this work shares strong similarities with the important problem of colloid accumulation and clogging during drying of a porous medium, [60][61][62][63] for which Fig. 1 could locally describe the pore-scale dynamics.…”

Section: Discussionmentioning

confidence: 78%

“…This is mainly due to the control of evaporation conditions in this one-dimensional drying geometry and the monitoring possibilities offered by this technique. In addition to these studies, confined directional drying is also a model configuration for studying the drying of porous media saturated with a colloidal dispersion in the capillary regime 22,23 . Despite all these studies, the evaporation kinetics, J vs t, and the growth of the porous solid, x c vs t, remain open questions to this day 24 .…”

Section: Introductionmentioning

confidence: 99%

Confined directional drying of a colloidal dispersion: kinetic modeling

Pingulkar

Salmon

2023

Soft Matter

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“…In addition to these studies, confined directional drying is also a model configuration for studying the drying of porous media saturated with a colloidal dispersion in the capillary regime. 22,23 Despite all these studies, the evaporation kinetics, J vs. t, and the growth of the porous solid, x c vs. t, remain open questions to this day. 24 In the case of nanoparticles with typical radii a r 20 nm, experiments have shown that the solid layer first grows linearly, x c B t, and then follows a square root growth x c B t 0.5 indicating a decrease of the evaporation-induced flow rate J.…”

Section: Introductionmentioning

confidence: 99%