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Chatain, Dominique; Wynblatt, P.; Hagège, S.; Siem, Ellen J.; Carter, W. Craig

doi:10.1023/a:1015194308627

Cited by 15 publications

(7 citation statements)

References 3 publications

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“…As shown in Appendix B, when the liquid-gas interface has zero curvature, the free energy of N voids, having total volume V , in corner configurations is independent of N and there is no driving force either for coarsening of the voids or for anticoarsening. This result agrees with previous results by Chatain et al [1]. For the 3-D model, Fig.…”

Section: Discussionsupporting

confidence: 94%

“…3. Chatain et al [1] collect their stability data using the same principle, although in their paper they employ a different set of constitutive variables.…”

Section: Discussionmentioning

confidence: 99%

“…A thermodynamic model is presented of a gas-filled void at an idealized reentrant surface feature, and the model is used to calculate the most stable void configuration (including the possibility of the void being liberated from the surface). The approach is similar to that used by Chatain et al [1] to analyze the thermodynamically stable shapes of two-phase systems enclosed within a cubic cavity. By calculating the free energy of the stable configuration relative to that of a liberated void of the same size, the minimum work required to release the void is predicted.…”

Section: Introductionmentioning

confidence: 99%

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Stability of voids formed in cavities at liquid–solid interfaces

Bullard

2004

Journal of Colloid and Interface Science

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Section: Discussionsupporting

confidence: 94%

“…3. Chatain et al [1] collect their stability data using the same principle, although in their paper they employ a different set of constitutive variables.…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Stability of voids formed in cavities at liquid–solid interfaces

Bullard

2004

Journal of Colloid and Interface Science

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“…As such, we decided to investigate whether the formation of bimetallic NCs of Cu and Ag can be predicted with a simple thermodynamic model focused on surface and interface effects. We have revisited models studying wetting in multiphase systems − to probe how the geometry of Cu and Ag domains in a nanoparticle is primarily determined by the ratio of surface and interface energies. Here, surface energy refers to the energy needed to create a boundary between a solid and a vapor, while interface energy is the cost to create an interface between two different solids .…”

Section: Introductionmentioning

confidence: 99%

Tailoring Morphology of Cu–Ag Nanocrescents and Core–Shell Nanocrystals Guided by a Thermodynamic Model

Osowiecki

Satish

et al. 2018

J. Am. Chem. Soc.

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The ability to predict and control the formation of bimetallic heterogeneous nanocrystals is desirable for many applications in plasmonics and catalysis. Here, we report the synthesis and characterization of stable, monodisperse, and solution-processed Cu-Ag bimetallic nanoparticles with specific but unusual elemental arrangements that are consistent with a recently developed thermodynamic model. Using air-free scanning transmission electron microscopy with energy-dispersive X-ray spectroscopy, the distribution of Cu and Ag positions was unambiguously identified within individual nanocrystals (NCs), leading to the discovery of a Cu-Ag nanocrescent shape. A simple yet versatile thermodynamic model was applied to illustrate how the interplay between surface and interface energies determines the particle morphology. It is found that there exists a range of surface-to-interface energy ratios under which crescent-shaped nanocrystals are the thermodynamically favored products, with the morphology tunable by adjusting the Ag content. We further show the conversion of Cu-Ag nanocrescents into Ag@CuO upon mild oxidation, whereas fully core-shell Cu@Ag NCs are robust against oxidation up to 100 °C. The plasmonic and interband absorptions of Cu-Ag NCs depend on the composition and the degree of Cu oxidation, which may find application in light-driven catalysis.

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“…Chatain et al developed a theory for the morphology of a two-phase system embedded in a cavity with cubic symmetry [11] and presented a structure map indicating which morphologies are stable as a function of the relevant parameters.…”

mentioning

confidence: 99%

Particle Image Velocimetry

Yuan¹,

Shin²,

Liao³

et al. 2008

Topics in Applied Physics

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The equilibrium structure of embedded nanocrystals formed from strongly segregating binaryalloys is considered within a simple thermodynamic model. The model identifies two dimensionless interface energies that dictate the structure, and allows prediction of the stable structure for any choice of these parameters. The resulting structure map includes three distinct nanocrystal morphologies: core/shell, lobe/lobe, and completely separated spheres.

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Untitled

Cited by 15 publications

References 3 publications

Stability of voids formed in cavities at liquid–solid interfaces

Stability of voids formed in cavities at liquid–solid interfaces

Tailoring Morphology of Cu–Ag Nanocrescents and Core–Shell Nanocrystals Guided by a Thermodynamic Model

Particle Image Velocimetry

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