界面稳定性、界面涨落和运动诱导相分离中的吉布斯-汤姆逊关系
Interface stability, interface fluctuations, and the Gibbs-Thomson relation in motility-induced phase separations
摘要：
具有短程体积排阻相互作用的自推进粒子的极小模型已经显示出相分离的特征。在这里，我表明，所观察到的界面稳定性和波动的运动引起的相分离（MIPS）可以解释建模的活性颗粒在界面区域的微观动力学。此外，我证明了MIPS中的吉布斯-汤姆森关系的有效性，它提供了一个冷凝液滴的大小和周围的蒸汽浓度之间的函数关系。结果表明，MIPS在过饱和度消失时的粗化动力学在后期遵循经典的Lifshitz-Slyozov标度律。
英文摘要：
Minimal models of self-propelled particles with short-range volume exclusion interactions have been shown to exhibit signatures of phase separation. Here I show that the observed interfacial stability and fluctuations in motility-induced phase separations (MIPS) can be explained by modeling the microscopic dynamics of the active particles in the interfacial region. In addition, I demonstrate the validity of the Gibbs-Thomson relation in MIPS, which provides a functional relationship between the size of a condensed drop and its surrounding vapor concentration. As a result, the coarsening dynamics of MIPS at vanishing supersaturation follows the classic Lifshitz-Slyozov scaling law at the late stage.
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