We introduce a computationally efficient continuum technique to simulate the complex kinetic pathways of block copolymer self-assembly. Subdiffusive chain dynamics is taken into account via nonlocal Onsager coefficients. An application to directed self-assembly of thin films of diblock copolymers on patterned substrates reveals the conditions under which experimentally observed metastable structures intervene in the desired thin-film morphology. The approach generalizes easily to multiblock copolymers and more complex guiding patterns on the substrate, and its efficiency allows for the systematic optimization of guiding patterns and process conditions.

中文翻译：

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嵌段共聚物定向自组装的动力学途径：高效连续谱建模的见解。

我们引入了一种计算有效的连续体技术来模拟嵌段共聚物自组装的复杂动力学路径。通过非局部Onsager系数考虑了亚扩散链动力学。将双嵌段共聚物的薄膜定向自组装在带图案的基材上的应用揭示了在条件下实验观察到的亚稳态结构以所需的薄膜形态介入的条件。该方法很容易推广到基材上的多嵌段共聚物和更复杂的引导图案，并且其效率允许引导图案和工艺条件的系统优化。