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Estimation of the scaling of the nucleation time with volume when the nucleation rate does not exist

机译:不存在成核速率时,成核时间随体积变化的比例估计

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Recent experimental [Diao et al., J. Am. Chem. Soc. 2011 133, 3756.] and simulation results [Sear, J. Phys. Cond. Matt. 2012 24, 052205.] are not consistent with a nucleation rate that is in the thermodynamic limit. This has consequences, if the rate is not in the thermodynamic limit, the time for nucleation will not necessarily scale as one over system size. Here, I show how to analyze data for nucleation times to test for the existence of a well-defined nucleation rate. I also show how to estimate the scaling of the nucleation time with the number of nucleation sites. The prediction is that the farther the system is from the thermodynamic limit, the more rapidly the nucleation time varies with system size. To make this prediction, I use extreme-value statistics. I also show how nucleation data can be analyzed to extract information on the heterogeneity in the surfaces on which nucleation is occurring.
机译:最近的实验[Diao等,J。Am。化学Soc。 2011 133,3756.]和仿真结果[Sear,J. Phys。条件。马特2012 24,052205.]与热力学极限内的成核速率不一致。这具有后果,如果速率不在热力学极限内,则成核时间不一定会超过整个系统大小。在这里,我展示了如何分析成核时间的数据,以测试是否存在明确定义的成核速率。我还展示了如何估计成核时间随成核位点数量的变化。预测是,系统距离热力学极限越远,成核时间随系统尺寸的变化就越快。为了做出此预测,我使用了极值统计。我还展示了如何分析成核数据,以提取有关发生核的表面异质性的信息。

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