论文标题
结晶动力学速率因子的统一缩放定律
Unified scaling law for rate factor of crystallization kinetics
论文作者
论文摘要
结晶动力学的特征直接定义了速率特征：晶体成核速率，晶体生长速率和所谓的动力学速率因子也称为固定速率（粒子在结晶核表面上）。我们表明，作为降低温度的功能，动力学速率因子遵循统一的缩放功率定律。我们的模型原子系统（结晶体积液体和液体薄膜）以及可用的实验数据来证实了这种情况。我们发现，这种统一比例定律的指数与系统的玻璃形成能力的度量有关。本研究的结果扩展了统一描述晶体成核和生长动力学的统一描述。
Features of the crystallization kinetics define directly the rate characteristics: the crystal nucleation rate, the crystal growth rate and the so-called kinetic rate factor known also as the attachment rate (of particles to the surface of a crystalline nucleus). We show that the kinetic rate factor as function of the reduced temperature follows a unified scaled power law. This scenario is confirmed by our simulation results for model atomistic systems (crystallizing volumetric liquids and liquid thin film) and by available experimental data for crystallizing polymers. We find that the exponent of this unified scaling law is associated with a measure of the glass-forming ability of a system. The results of the present study extend the idea of a unified description of the rate characteristics of the crystal nucleation and growth kinetics by means of the scaling relations.
