| 학회 | 한국고분자학회 |
| 학술대회 | 2004년 가을 (10/08 ~ 10/09, 경북대학교) |
| 권호 | 29권 2호, p.480 |
| 발표분야 | 고분자 구조 및 물성 |
| 제목 | Cell Dynamics Simulations of the Morphological Development of Thin Block Copolymer Films on Nanopatterned Surfaces |
| 초록 | The morphological structures of thin block copolymer films on nanopatterned surfaces are investigated using cell dynamics simulations. Prior to the simulations for thin films, exploratory bulk simulations are performed to find the intrinsic periodicity (λ0) of the block copolymer in the bulk. Thin films of the block copolymer confined between two surfaces are then simulated on L×L×Z (L » λ0, z < λ0) lattices. The upper surface is neutral and the lower surface is patterned with narrow line preferential to one of the two blocks. The morphological dependence of the thin films on the surface pattern (stripe-patterned and checker-patterned) and the commensurability between the period of the surface pattern and the block copolymer is systematically investigated. Our results show that patterned substrates direct the ordering of lamellae and cylinders in the confined films over a macroscopic scale, which suggests that patterned substrates could reach the ultimate goal of producing long-range ordered structures as templates for nanolithography. Fig. 1. Morphologies of thin block copolymer films on stripe-patterned surface (left) and checker-patterned surface (right). The images are taken from equilibrium states of cell dynamics simulations. |
| 저자 | 이원홍, 허준, 조원호 |
| 소속 | 서울대 |
| 키워드 | thin film; patterning; block copolymer |
