| 초록 |
The phase behavior of block copolymers (BCPs) has widely been investigated, particularly in 1D and cylindrical 2D confinements. However, other anisotropic confinements such as trigonal prism and cone shape are barely investigated in this area. These confinements have vertices which impose more severe enthalpic and entropic constraints to the BCPs. In our research group, we fabricated conic porous aluminum oxides by the repeated cycles of anodization and pore widening. Furthermore, we used them as templates to confine polystyrene–b-poly(methyl methacrylate) (PS-b-PMMA) BCPs. The PS-b-PMMA was spin-coated on the cone-shaped AAO and annealed for 4 days. After that, the AAO was etched and transmission election microscopy (TEM) was employed to investigate the morphologies of the confined BCPs. As hexagonal cone arrays have some useful functionalities such as antireflection and super hydrophobicity, we expect that this study would give insights for the combination of these functionalities. |
