Monte Carlo simulations based on a modified bond-fluctuation and vacancy-diffusion algorithm on a simple cubic lattice were employed to examine the morphology of thin films of the symmetric AmB2nAm triblock copolymer confined between two hard homogeneous parallel walls. The walls preferred either segment A or segment B. Parallel lamellae, parallel cylinders and perpendicular cylinders morphologies, dependent on the composition, film thickness and interaction energies, were identified in these simulations, in agreement with the experimental observations of several researchers.
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Feng et al. (2002) studied this question.