Solid-state wetting at the nanoscale

Pierre-Louis, Olivier

doi:10.1016/j.pcrysgrow.2016.04.009

Cited by 23 publications

(29 citation statements)

References 64 publications

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“…According to the calculated interfacial energies, faceted precipitates are expected to form, with <110> facets dominating, which are indeed observed in the LKMC simulations. From classical wetting theory [59], the sign and magnitude of the spreading parameter ()…”

Section: Figurementioning

confidence: 99%

Thermodynamics and kinetics of core-shell versus appendage co-precipitation morphologies: An example in the Fe-Cu-Mn-Ni-Si system

Shu¹,

Wells²,

Almirall³

et al. 2018

Acta Materialia

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What determines precipitate morphologies in co-precipitating alloy systems? We focus on alloys of two precipitating phases, with the fast-precipitating phase acting as heterogeneous nucleation sites for a second phase manifesting slower kinetics. Kinetic lattice Monte Carlo simulations show that the interplay between interfacial and ordering energies, plus active diffusion paths, strongly affect the selection of core-shell verses appendage morphologies. We study a FeCuMnNiSi alloy using the combination of atom probe tomography and simulations, and show that the ordering energy reduction of the MnNiSi phase heterogeneously nucleated on a pre-existing copper-rich precipitate exceeds the energy penalty of a predominantly Fe/Cu interface, leading to initial appendage, rather than core-shell, formation. Diffusion of Mn, Ni and Si around and through the Cu core towards the ordered phase results in subsequent appendage growth. We further show that in cases with higher primary precipitate interface energies and/or suppressed ordering, the coreshell morphology is favored.3

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Section: Figurementioning

confidence: 99%

Thermodynamics and kinetics of core-shell versus appendage co-precipitation morphologies: An example in the Fe-Cu-Mn-Ni-Si system

Shu¹,

Wells²,

Almirall³

et al. 2018

Acta Materialia

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“…(3) with the non-oscillatory surface energy (i.e., cos ω 1 h cos ω 2 h → 1) also has been used with some success to explain the stability and morphologies of Ag films on Si [21]. Notice that lim h→∞ γ(h) = γ bf [25], [26] is the surface energy density of a bulk film. From Refs.…”

Section: Model Of the Morphological Evolution Of Pb And Ag Quantumentioning

confidence: 99%

Morphologies, metastability, and coarsening of quantum nanoislands on the surfaces of the annealed Ag(110) and Pb(111) thin films

Price

Henner

Khenner

2018

Journal of Applied Physics

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Morphological evolution of heteroepitaxial nanoislands toward equilibrium (coarsening) is computed using the detailed continuum model that incorporates the quantum size effect. Results reveal the metastability of the "magic" heights, show the morphological transitions and the surface diffusion routes by which a quantum island reaches its stable height, and provide the coarsening laws for the island density and area, thus clarifying the kinetic morphology pathways in the growth of an ultrathin metal films.

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“…Similar models have also been used in the case of liquid films [1,2,[18][19][20][21]. The profile of the wetting potential can be tuned so as to obtain complete wetting or partial wetting [1,22]. For example, solid films exhibiting complete wetting correspond to a monotonically decreasing wetting potential.…”

Section: Introductionmentioning

confidence: 99%

Triple-line kinetics for solid films

Tripathi

Pierre-Louis

2018

Phys. Rev. E

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We present a derivation of the triple-line kinetic boundary conditions for a solid film in contact with a solid substrate for both nonconserved (evaporation-condensation) and conserved (surface diffusion) dynamics. The result is obtained via a matched asymptotic expansion from a mesoscopic model with a thickness-dependent wetting potential (or disjoining pressure) and mobility. In the nonconserved case, we obtain a single boundary condition, which relates the triple-line velocity with the deviation of the contact angle from its equilibrium value. In the conserved case, two kinetic boundary conditions are needed. They relate the velocity and mass flux at the triple line to the contact angle deviation and discontinuity of the chemical potential. These linear relations are described by three kinetic coefficients. The conditions under which the kinetic coefficients remain finite are obtained. We find, for example, that some kinetic coefficients diverge within the conserved model in the presence of van der Waals interaction.

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Solid-state wetting at the nanoscale

Cited by 23 publications

References 64 publications

Thermodynamics and kinetics of core-shell versus appendage co-precipitation morphologies: An example in the Fe-Cu-Mn-Ni-Si system

Thermodynamics and kinetics of core-shell versus appendage co-precipitation morphologies: An example in the Fe-Cu-Mn-Ni-Si system

Morphologies, metastability, and coarsening of quantum nanoislands on the surfaces of the annealed Ag(110) and Pb(111) thin films

Triple-line kinetics for solid films

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