奥斯特瓦尔德成熟
蒸发
材料科学
聚合物
化学物理
扩散
非平衡态热力学
图层(电子)
成熟
纳米技术
化学工程
热力学
化学
复合材料
物理
工程类
食品科学
作者
Qiyun Tang,Marcus Müller,Christopher Y. Li,Wenbing Hu
标识
DOI:10.1103/physrevlett.123.207801
摘要
We demonstrate by molecular simulations that the Ostwald ripening of crystalline polymer nuclei within the fast-evaporation-induced 2D skin layer is retarded at suitable temperatures and evaporation rates. Such an anomalous ripening can be attributed to the interplay between the thermodynamically driven diffusion of noncrystalline fragments toward the growing nuclei and the diffusive current away from the free surface caused by the densification in the nonequilibrium skin layer. The growth orientation of the nuclei inside the skin plane can be adjusted during this anomalous ripening process, which is beneficial for fabricating 2D polymer crystals.
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