Modeling and simulation of droplet evaporation using a modified Cahn–Hilliard equation

Lee, Hyun Geun; Yang, Junxiang; Kim, Sangkwon; Kim, Junseok

doi:10.1016/j.amc.2020.125591

Cited by 10 publications

(4 citation statements)

References 22 publications

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“…Most models on the wetting phenomenon in literature are based on Equation ( 9), such as the work of Jacqmin, [167] Cahn, [173] de Gennes, [174] and many other references. [175][176][177][178][179] This equation is sometimes called natural boundary condition. At static equilibrium when d𝜌/dt = 0, it has been demonstrated that this boundary condition is equivalent to the Young's law.…”

Section: Thermodynamic Interpretation For the Wetting Effect On Patte...mentioning

confidence: 99%

Wetting Effect on Patterned Substrates

Wang

Nestler

2023

Advanced Materials

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A droplet deposited on a solid substrate leads to the wetting phenomenon. A natural observation is the lotus effect, known for its superhydrophobicity. This special feature is engendered by the structured microstructure of the lotus leaf, namely, surface heterogeneity, as explained by the quintessential Cassie-Wenzel theory (CWT). In this work, recent designs of functional substrates are overviewed based on the CWT via manipulating the contact area between the liquid and the solid substrate as well as the intrinsic Young's contact angle. Moreover, the limitation of the CWT is discussed. When the droplet size is comparable to the surface heterogeneity, anisotropic wetting morphology often appears, which is beyond the scope of the Cassie-Wenzel work. In this case, several recent studies addressing the anisotropic wetting effect on chemically and mechanically patterned substrates are elucidated. Surface designs for anisotropic wetting morphologies are summarized with respect to the shape and the arrangement of the surface heterogeneity, the droplet volume, the deposition position of the droplet, as well as the mean curvature of the surface heterogeneity. A thermodynamic interpretation for the wetting effect and the corresponding open questions are presented at the end.

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Section: Thermodynamic Interpretation For the Wetting Effect On Patte...mentioning

confidence: 99%

Wetting Effect on Patterned Substrates

Wang

Nestler

2023

Advanced Materials

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“…Some relevant studies also focus on the morphology of droplets in various external environments, such as electric (Cheng and Chaddock, 1986;Chen et al, 2007), gravitational (Zeng et al, 2022), noise (Borcia et al, 2019), and thermal fields (Adera et al, 2013;Lee et al, 2021b;Dai et al, 2022). Therefore, we can apply an appropriate external field to regulate the wetting behavior of the droplet, by adjusting the contact angle on a rigid substrate.…”

Section: Contact On a Rigid Surfacementioning

confidence: 99%

Factors influencing wettability and surface/interface mechanics of plant surfaces: a review

Tie,

Gao,

Huang

et al. 2023

Front. Mater.

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A wide variety of abundant plant leaves exist in nature, and the wettability of their surfaces is formed to adapt to diverse external environments. In this paper we will focus on the factors influencing the wettability of various plant leaves prevalent in nature. And we hope to investigate the interfacial problems of plants from a mechanical point of view. It is found that there are many factors affecting the surface wettability of leaves, such as chemical composition, surface microstructures, hierarchical structures, and growth age. Different influencing factors have different contributions to the change of surface wettability. The surface wax composition influences the surface wettability from a chemical point of view while the hierarchical structure consisting of nanostructures and micron structures also influences the wettability from a structural point of view. Also as the growth age of the plant increases, there is a combined effect on the chemical composition and microstructure of the leaves. Then we discuss the surface/interface mechanics of droplets on various plant leaves and analyze the wetting properties of droplets on different substrates. Finally, we hope that the surface/interface mechanics of plant leaves may be systematically utilized in the future for the preparation of multifunctional biomimetic materials, realizing the crossover of chemistry, biology, mechanics, and other materials science fields.

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“…Such diffuse interface models generalize to fluid mixtures previous models developped for single species fluids [2,3,4,5]. Diffuse interface models have been used successfully to describe spinodal decomposition, droplets dynamics, three phase contact lines, surface diffusion, as well as transcritical flames [1,2,3,4,5,6,7,8,9,10,11].…”

Section: Introductionmentioning

confidence: 97%

Kinetic derivation of Cahn-Hilliard fluid models

Giovangigli

2021

Phys. Rev. E

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Modeling and simulation of droplet evaporation using a modified Cahn–Hilliard equation

Cited by 10 publications

References 22 publications

Wetting Effect on Patterned Substrates

Wetting Effect on Patterned Substrates

Factors influencing wettability and surface/interface mechanics of plant surfaces: a review

Kinetic derivation of Cahn-Hilliard fluid models

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