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Schematic illustration of the two-phase structure of the vaporlike nanocavity and the liquidlike matrix amorphous phase. Arrows mean shrinkage of the nanocavity under the larger driving force of the inner skin by external activation.
Size-dependent inner surface elastic energy (the inset) and chemical energy with and total surface free energy with for Si sample. The necessary parameters used in this model are as follows (Ref. 29): , , , and .
Distribution of the radial component of the displacement in the inner wall of the nanocavity: (a) shows (A) , (B) , (C) , and (D) ; (b) shows the and dependence of the radial displacement.
Size dependence of the intrinsic bulk modulus of the nanocavity in the Si matrix : (A) , (B) , and (C) .
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