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Nucleation simulation using a model of hard/soft discs (CROSBI ID 210213)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Milanović, Željka ; Pivac, Branko ; Zulim, Ivan Nucleation simulation using a model of hard/soft discs // Physica. A, Statistical mechanics and its applications, 417 (2015), 86-95. doi: 10.1016/j.physa.2014.09.039

Podaci o odgovornosti

Milanović, Željka ; Pivac, Branko ; Zulim, Ivan

engleski

Nucleation simulation using a model of hard/soft discs

In this paper we present a computer study of the quantum dot (QD) nucleation probability with three possible models of particle interaction ; Soft Core (SC), Hard Core (HC) and Hard Core/Soft Shell (HCSS) model. Computer analysis of the nucleation probability is performed on a 500 by 500 lattice with 2000 simulations per event. If a matrix is assumed to represent an SiO2 substrate in which a pure Si quantum dot can grow, it is demonstrated that nucleation centers are more easily distinguished and initially more likely to form in the SC and HCSS models rather than in the HC model. If particles are allowed to move, nucleation centers can appear even in the HC model independent of a preexisting local density. A low probability of nucleation in the HC model and a high probability of nucleation in the SC model are evident from the system entropy curve. The probability of nucleation, therefore, depends on the local density change, percolation probability and system entropy. Low probability of nucleation in the HC model is in accordance with a lower probability of percolating clusters forming in a given model.

Nucleation; Quantum dot; Continuum percolation

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Podaci o izdanju

417

2015.

86-95

objavljeno

0378-4371

10.1016/j.physa.2014.09.039

Povezanost rada

Fizika, Elektrotehnika

Poveznice
Indeksiranost