Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2010-07-22
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
11 figures, plus 1 as graphical abstract
Scientific paper
An experimental and theoretical study on the structure and energetics of stellated gold clusters at several sizes is presented. Systematic molecular dynamics simulations on Kepler-Poisont classi- ?ed clusters are performed based on cubo-octahedral and icosahedral cores, following present and previous studies that suggest stellated clusters grew up from these seeds. For cluster sizes up to 10802 atoms full atomistic molecular dynamics simulations at room temperature have been carried out. Results show that stellated clusters in the bigger size regime maintain their star-like shape at room temperature, and by means of linear ?tting of energy data to proper function models, it is predicted that the two type of stellated structures might coexist at room temperature for relatively large sizes, being these ?ndings in good agreement with experimental results.
Cabrera-Trujillo J. M.
Jose-Yacaman M.
Montejano-Carrizales J. M.
Velazquez-Salazar J. J.
Zhang L. Rodriguez-Loopez J. W.
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