Directed Assembly of Block Copolymers by Sparsely Patterned Substrates

摘要: Self-consistent field theory and dissipative particle dynamics simulations are used to demonstrate the controlled positioning alignment of cylindrical domains by chemical surface patterns in an asymmetric slit. Self-assembly copolymer melt is simulated near dense sparse patterns, both with one two characteristic length scales. In particular, we compare effect a hexagonal pattern, rectangular triangle pattern. The parallel microdomains between preferentially attractive homogeneous surfaces shown transform into stable perpendicular phase case substrate which commensurate morphology bulk. For when different scales interactions involved, for observe that self-assembly diblocks multiplies density factor 2 4, respectively. A 2-fold resolution en...