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Sink-effect of nanocavities: Thermodynamic and kinetic approach
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View: Figures


Image of FIG. 1.
FIG. 1.

(Color online) Schematic illustration of a nanocavity in the matrix. is the diameter of the nanocavity . The dashed circle denotes the radius of the trapping region. Some blue points mean the impurity atoms in the matrix are trapped by the nanocavity.

Image of FIG. 2.
FIG. 2.

Size-dependent surface free energies of a spherical Ag nanocrystal and a nanocavity in silicon. Some parameters used in the calculations are listed: , , (see Ref. 15).

Image of FIG. 3.
FIG. 3.

(Color online) Schematic illustrations of an Ag nucleus on the inner surface of a nanocavity in silicon (a), in which and are the radiuses of the nanocavity and the nucleation, and is the contact angle. The nucleation Gibbs free energy of Ag on the inner surface of a nanocavity with (b), and the inset shows the nucleation Gibbs free energy of impurities atoms in a nanocavity without considerations of the nanosized effect of surface free energy of the inner surface.

Image of FIG. 4.
FIG. 4.

Relationship between concentration of the impurities removed and the diffusion distance in the trapping region.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Sink-effect of nanocavities: Thermodynamic and kinetic approach