Heterogeneous nucleation on aerosol particles

Padilla, Kira; Talanquer, Vicente

doi:10.1063/1.1332995

Cited by 30 publications

(26 citation statements)

References 28 publications

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“…In addition, we have assumed that the liquid-vapor interface is sharp. There are several studies 35,54 that include diffuse interfaces. The results in this paper can serve as a guide in the development of more realistic models of lens-shaped nuclei on curved surfaces that includes the disjoining pressure and diffuse-interface effect.…”

Section: Discussionmentioning

confidence: 99%

Line-tension-induced scenario of heterogeneous nucleation on a spherical substrate and in a spherical cavity

Iwamatsu

2015

The Journal of Chemical Physics

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Line-tension-induced scenario of heterogeneous nucleation is studied for a lens-shaped nucleus with a finite contact angle nucleated on a spherical substrate and on the bottom of the wall of a spherical cavity. The effect of line tension on the free energy of a critical nucleus can be separated from the usual volume term. By comparing the free energy of a lens-shaped critical nucleus of a finite contact angle with that of a spherical nucleus, we find that a spherical nucleus may have a lower free energy than a lens-shaped nucleus when the line tension is positive and large, which is similar to the drying transition predicted by Widom [B. Widom, J. Phys. Chem. 99 2803(1995]. Then, the homogeneous nucleation rather than the heterogeneous nucleation will be favorable. Similarly, the free energy of a lens-shaped nucleus becomes negative when the line tension is negative and large. Then, the barrier-less nucleation with no thermal activation called athermal nucleation will be realized.

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Section: Discussionmentioning

confidence: 99%

Line-tension-induced scenario of heterogeneous nucleation on a spherical substrate and in a spherical cavity

Iwamatsu

2015

The Journal of Chemical Physics

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“…14͒, while it is nonmonotonic for the incomplete wetting. Thus far, most DFT studies on the heterogeneous nucleation focus mainly upon systems involving partially wettable particles, 16,17 namely, the second possible way of heterogeneous nucleation described above. In that case, the line tension of the threephase interface on the solid surface must be considered.…”

Section: Introductionmentioning

confidence: 99%

Heterogeneous nucleation on mesoscopic wettable particles: A hybrid thermodynamic/density-functional theory

Bykov¹,

Zeng²

2002

The Journal of Chemical Physics

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A hybrid thermodynamic and density-functional theory for heterogeneous nucleation on mesoscopic wettable particles is developed. The nonlocal density-functional theory ͑DFT͒ is on basis of the weighted-density approximation ͑WDA͒ of Tarazona. The model system consists of a Lennard-Jones ͑LJ͒ fluid and a 9-3 LJ wall for the solid particle. Effects of the droplet curvature and compressibility are accounted for in the theory. A by-product of this work is the calculation of the Tolman length using the WDA-DFT ͑Appendix A͒. Important characteristics of the heterogeneous nucleation, including the chemical potential of the liquid condensate, the free energy of droplet formation, and the barrier height to nucleation, are obtained.

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“…Such observations are in accordance with the high density of calcium carbonate observed on noninfused PPy and PTFE to a lower extent in the current work. Infusing the micro-porous PPy with lubricants lower the surface energy of the interface which increase the barrier energy for heterogeneous nucleation [29][30][31][32] and also help reducing the adhesion of solid particles onto the surface [33,34] while maintaining a smooth surface; deflect free down to the molecular scale [19]. It is this multifunctional design that provides the liquid-infused porous surfaces with the promising antifouling properties shown in Figure 4.…”

Section: Surface Characterization Scanning Electron Microscopy (Sem)mentioning

confidence: 99%

Liquid infused porous surfaces for mineral fouling mitigation

Charpentier

Neville

Baudin

et al. 2015

Journal of Colloid and Interface Science

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Preventing mineral fouling, known as scale, is a long-standing problem for a broad range of industrial applications ranging from oil production to water treatment systems to names 2 but a few. The build-up of inorganic scale such as calcium carbonate on surfaces and facilities is undesirable as it can result in safety risks and associated flow assurance issues. To date the overwhelming amount of research has mainly focused on chemical inhibition of scale bulk precipitation and little attention has been paid to deposition onto surfaces. The development of novel more environmentally-friendly strategies to control mineral fouling will most probably necessitate a multifunctional approach including surface engineering. In this study, we demonstrate that liquid infused porous surfaces provide an appealing strategy for surface modification to reduce mineral scale deposition. Microporous polypyrrole (PPy) coatings were fabricated onto stainless steel substrates by electrodeposition in potentiostatic mode. Subsequent infusion of low surface energy lubricants (fluorinated oil Fluorinert FC-70 and ionic liquid 1-Butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (BMIm) ) into the porous coatings results in liquid-repellent slippery surfaces.To assess their ability to reduce surface scaling the coatings were subjected to a calcium carbonate scaling environment and the scale on the surface was quantified using Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES). PPy surfaces infused with BMIm (and Fluorinert to a lesser extent) exhibit remarkable antifouling properties with the calcium carbonate deposition reduced by 18 times in comparison to untreated stainless steel. These scaling tests suggest a correlation between the stability of the liquid infused surfaces in artificial brines and fouling reduction efficiency. The current work shows the great potential of such novel coatings for the management of mineral scale fouling.

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Heterogeneous nucleation on aerosol particles

Cited by 30 publications

References 28 publications

Line-tension-induced scenario of heterogeneous nucleation on a spherical substrate and in a spherical cavity

Line-tension-induced scenario of heterogeneous nucleation on a spherical substrate and in a spherical cavity

Heterogeneous nucleation on mesoscopic wettable particles: A hybrid thermodynamic/density-functional theory

Liquid infused porous surfaces for mineral fouling mitigation

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