文献类型：期刊文献

英文题名：Harnessing Anisotropic Nanoposts to Enhance Long-Range Orientation Order of Directed Self-Assembly Nanostructures via Large Cell Simulations

作者：Zhang, Liangshun[1];Wang, Liquan[1];Lin, Jiaping[1]

机构：[1]E China Univ Sci & Technol, Shanghai Key Lab Adv Polymer Mat, State Key Lab Bioreactor Engn, Key Lab Ultrafine Mat,Minist Educ,Sch Mat Sci & E, Shanghai 200237, Peoples R China

年份：2014

卷号：3

期号：8

起止页码：712

外文期刊名：ACS MACRO LETTERS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000340701900004)】；

基金：This work was supported by the National Natural Science Foundation of China (51203049, 21234002) and Research Fund for the Doctoral Program of Higher Education of China (20120074120003).

语种：英文

摘要：Self-assembly behaviors of cylinder-forming diblock copolymers directed by an array of anisotropic nanoposts with elliptical shape are explored by large cell simulations of self-consistent field theory. The strategy using elliptical nanoposts allows us to generate long-range order cylinders with single orientation by suppressing other selections of cylinder alignment. The anisotropy of nanoposts plays a significant role in improving the tolerance of commensurability conditions between the dimensions of nanopost lattices and the period of cylinders. Moreover, the local defect structures could be regulated through varying the spacing and orientation of elliptical nanoposts. This work may provide useful guidelines for designing the topographical templates and lay the groundwork for fabricating well-ordered nanostructures of block copolymer lithography.