This paper describes an all-soft, templated assembly of block copolymers (BCPs) with programmable alignment. Using polymeric nanowrinkles as a confining scaffold, poly(styrene)-block-poly(dimethylsiloxane) (PS-b-PDMS) BCPs were assembled to be parallel or perpendicular to the wrinkle orientation by manipulating the substrate strain. Self-consistent field theory modeling revealed that wrinkle curvature and surface affinity govern the BCP structural formation. Furthermore, control of BCP alignment was demonstrated for complex wrinkle geometries, various copolymer molecular weights, and functional wrinkle skin layers. This integration of BCP patterning with flexible 3D architectures offers a promising nanolithography approach for next-generation soft electronics.

中文翻译：

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嵌段共聚物的应变依赖性纳米皱缩限制。

本文介绍了一种具有可编程排列方式的嵌段共聚物（BCP）的全软模板组装。使用聚合物纳米皱纹作为约束支架，通过控制底物应变，将聚（苯乙烯）-嵌段-聚（二甲基硅氧烷）（PS-b-PDMS）的BCP组装成与皱纹方向平行或垂直。自洽场理论建模表明，皱纹曲率和表面亲和力控制着BCP结构的形成。此外，对于复杂的皱纹几何形状，各种共聚物分子量和功能性皱纹皮肤层，证明了BCP排列的控制。BCP图案与灵活的3D架构的这种集成为下一代软电子产品提供了一种有希望的纳米光刻方法。