The characteristics of heterogeneous nucleation on concave surfaces and implications for directed nucleation or surface activity by surface nanopatterning

Qian, Ma; Ma, Jie

doi:10.1016/j.jcrysgro.2012.06.031

Cited by 54 publications

(76 citation statements)

References 13 publications

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“…(13) can also be written as Eq. (19). The generalized shape factor of the line contribution for a nucleus on a concave substrate is given by…”

Section: B Nucleus On a Concave Spherical Substratementioning

confidence: 99%

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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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“…(13) can also be written as Eq. (19). The generalized shape factor of the line contribution for a nucleus on a concave substrate is given by…”

Section: B Nucleus On a Concave Spherical Substratementioning

confidence: 99%

“…(19) for g cv on the convex substrate. Therefore, the hydrophobicity and hydrophilicity interchange their roles in the line-tension contribution to the free energy between convex and concave substrates.…”

Section: B Nucleus On a Concave Spherical Substratementioning

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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“…Hence, this paper is to treat heterogenous nucleation on the more complicated geometry of substrate than those previously concerned in Refs. [8,9,11]. In other words, we consider nucleation in a cave with certain surface curvature and one apex, which is more close to practice.…”

Section: Introductionmentioning

confidence: 97%

“…On the basis of Volmer-Flood's model, Fletcher [7] studied heterogenous nucleation on a spherical substrate surface. Recently Qian and Ma [8,9] realized a rigorous thermodynamic formulation for nucleation on both of convex and concave spherical surfaces. The nucleation substrate (wall of molds or nucleating agents) surfaces would contain a myriad of grooves or caves due to surface roughness in practical casting situation.…”

Section: Introductionmentioning

confidence: 99%

“…These cavities are generally assumed as spherical cavities having the iso-curvature or conical cavities having one apex. If there does not exist cusps in the cave, lateral surface of the cave would be better approximated by a concave spherical surface [9]. On the other hand, if the cave surface curvature along a nucleus growing direction can be neglected, the cave would be assumed as a conical cavity, in which nucleation formation was investigated by Lu et al [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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Heterogenous nucleation in a cave with an apex and iso-curvature lateral surface

Liu

2015

Journal of Crystal Growth

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Microstructural Control via Copious Nucleation Manipulated by In Situ Formed Nucleants: Large‐Sized and Ductile Metallic Glass Composites

Song

Wang

et al. 2016

Advanced Materials

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A novel strategy to control the precipitation behavior of the austenitic phase, and to obtain large-sized, transformation-induced, plasticity-reinforced bulk metallic glass matrix composites, with good tensile properties, is proposed. By inducing heterogeneous nucleation of the transformable reinforcement via potent nucleants formed in situ, the characteristics of the austenitic phase are well manipulated.

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The characteristics of heterogeneous nucleation on concave surfaces and implications for directed nucleation or surface activity by surface nanopatterning

Cited by 54 publications

References 13 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

Heterogenous nucleation in a cave with an apex and iso-curvature lateral surface

Microstructural Control via Copious Nucleation Manipulated by In Situ Formed Nucleants: Large‐Sized and Ductile Metallic Glass Composites

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