The freezing of silver nanodroplets is studied by molecular dynamics simulations on time scales which mimic typical experimental situations. At small sizes (2-3 nm) both crystalline and non-crystalline structures (icosahedra and decahedra) are observed; while at large sizes, also around magic icosahedral numbers, we show that silver droplets solidify preferentially as non-icosahedral clusters. We compare two different ways of growing clusters: the solid-state growth from a very small seed and the freezing of a droplet. We find that the final shape of clusters depends on the growth process, and that the solid-state growth gives results in better agreement with the experiments.

Freezing of silver nanodroplets / F. Baletto, C. Mottet, R. Ferrando. - In: CHEMICAL PHYSICS LETTERS. - ISSN 0009-2614. - 354:1-2(2002), pp. 82-87. [10.1016/S0009-2614(02)00107-0]

Freezing of silver nanodroplets

F. Baletto;
2002

Abstract

The freezing of silver nanodroplets is studied by molecular dynamics simulations on time scales which mimic typical experimental situations. At small sizes (2-3 nm) both crystalline and non-crystalline structures (icosahedra and decahedra) are observed; while at large sizes, also around magic icosahedral numbers, we show that silver droplets solidify preferentially as non-icosahedral clusters. We compare two different ways of growing clusters: the solid-state growth from a very small seed and the freezing of a droplet. We find that the final shape of clusters depends on the growth process, and that the solid-state growth gives results in better agreement with the experiments.
Settore FIS/03 - Fisica della Materia
Settore CHIM/02 - Chimica Fisica
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/932164
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