The Kolmogorov-Johnson-Mehl-Avrami equation is wildly applied in the crystallization kinetics, and Avrami exponent involved plays an important role process. Here we show that can be obtained by a fractal model, explained as dimension time, which depends upon chain length molecule weight.

We undertake a detailed numerical study of the {\it Active Model B} proposed by Wittkowski et al. [Nature Comm. {\bf 5}, 4351 (2014)]. find that introduction activity has drastic effect on ordering kinetics. First, domain growth law shows crossover from usual Lifshitz-Slyozov for phase separation ($L \sim t^{1/3}$, where $t$ is time) to novel t^{1/4}$) at late times. Second, correlation functio...