| 초록 |
While block copolymer (BCP) has been actively studied for its application in various nanotechnologies, BCP brushes with one end of the chains attached to the substrate has not been active explored yet. Self-Consistent Field Theory (SCFT) calculations, which are limited to the systems of high molecular weights and high grafting densities, predicted that BCP brush would present similar phase behavior as BCP thin films. However, more diverse BCP brush morphologies are observed experimentally and those are strongly affected by the grafting density. Hence, we conducted simulations with a coarse-grained model which relieves the constraints on high grafting density and investigated BCP brush phase behaviors upon wide range of parameter space, including the grafting density, segregation strength between the blocks, preference between polymer blocks and the substrate. We anticipate that our study provides a guideline for experimentalists to design useful nanostructures from BCP brushes. |
