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arXiv 0704.0393cond-mat.mtrl-sci
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负载型金属纳米粒子熔融的热力学模型

A thermodynamic model for the melting of supported metal nanoparticles

S. C. Hendy

摘要:

我们构建了一个简单的热力学模型来描述一个球形弯曲的自由表面的支撑金属纳米粒子的熔化,有和没有表面熔化。我们使用该模型来研究最近的分子动力学模拟的结果,这表明一个支持的金属颗粒的熔化温度是相同的自由球形粒子具有相同的表面曲率。我们的模型表明,这是唯一的情况下,当接触角的固体和液体颗粒是相似的。对于表面熔化开始的温度也是如此。

英文摘要:

We construct a simple thermodynamic model to describe the melting of a supported metal nanoparticle with a spherically curved free surface both with and without surface melting. We use the model to investigate the results of recent molecular dynamics simulations, which suggest the melting temperature of a supported metal particle is the same as that of a free spherical particle with the same surface curvature. Our model shows that this is only the case when the contact angles of the supported solid and liquid particles are similar. This is also the case for the temperature at which surface melting begins.

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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