dorsal/arxiv
View SchemaFormation of an Icosahedral Structure during the Freezing of Gold Nanoclusters: Surface-Induced Mechanism
| Authors | H. -S. Nam, Nong M. Hwang, B. D. Yu, J. -K. Yoon |
|---|---|
| Categories | |
| ArXiv ID | physics/0205024 |
| URL | https://arxiv.org/abs/physics/0205024 |
| DOI | 10.1103/PhysRevLett.89.275502 |
Abstract
The freezing behavior of gold nanoclusters was studied by employing molecular dynamics simulations based on a semi-empirical embedded-atom method. Investigations of the gold nanoclusters revealed that, just after freezing, ordered nano-surfaces with a fivefold symmetry were formed with interior atoms remaining in the disordered state. Further lowering of temperatures induced nano-crystallization of the interior atoms that proceeded from the surface towards the core region, finally leading to an icosahedral structure. These dynamic processes explain why the icosahedral cluster structure is dominantly formed in spite of its energetic metastability.
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"abstract": "The freezing behavior of gold nanoclusters was studied by employing molecular\ndynamics simulations based on a semi-empirical embedded-atom method.\nInvestigations of the gold nanoclusters revealed that, just after freezing,\nordered nano-surfaces with a fivefold symmetry were formed with interior atoms\nremaining in the disordered state. Further lowering of temperatures induced\nnano-crystallization of the interior atoms that proceeded from the surface\ntowards the core region, finally leading to an icosahedral structure. These\ndynamic processes explain why the icosahedral cluster structure is dominantly\nformed in spite of its energetic metastability.",
"arxiv_id": "physics/0205024",
"authors": [
"H. -S. Nam",
"Nong M. Hwang",
"B. D. Yu",
"J. -K. Yoon"
],
"categories": [
"physics.atm-clus",
"physics.comp-ph"
],
"doi": "10.1103/PhysRevLett.89.275502",
"title": "Formation of an Icosahedral Structure during the Freezing of Gold Nanoclusters: Surface-Induced Mechanism",
"url": "https://arxiv.org/abs/physics/0205024"
},
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