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arXiv 1412.7820cond-mat.mtrl-sci
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通过退火的全局最小搜索。纳米金团簇

Global Minimum Search via Annealing. Nanoscale Gold Clusters

Nadezhda A. Andreeva, Vitaly V. Chaban

摘要:

在一个相对较大的原子系统中定位全局最小势能态是非常具有挑战性的。我们目前的工作研究这个问题,使用一个例子的金纳米团簇,Au 10,Au 20,Au 30,Au 50。纳米金颗粒(NGP)通过其在诊断和治疗中的应用为生命科学做出了重大贡献。NGP的特征在于取决于合成条件的多种原子构型。我们采用退火分子动力学(AMD)作为替代和补充,以及建立本征跟随(EF)的几何优化。我们的结论是AMD和EF的组合系统地工作比EF单独更有效。

英文摘要:

Global minimum potential energy state can be very challenging to locate in a relatively large atomistic system. Our present work investigates this problem using an example of gold nanoclusters, Au10, Au20, Au30, Au50. Nanoscale gold particles (NGPs) contribute heavily life sciences through their applications in diagnostics and therapeutics. NGPs feature manifold atomistic configurations depending on the conditions of synthesis. We apply annealing molecular dynamics (AMD) as an alternative and supplement to the well-established eigenfollowing (EF) geometry optimization. We conclude that the combination of AMD and EF systematically works more efficiently than EF alone.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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