To probe the underlying physics of block copolymer thin film morphology in the presence of a free interface, we have performed extensive molecular dynamics simulations of a model system composed of coarse grained block copolymers and block-selective substrates. Our simulation procedure follows the heating/annealing process of an initially disordered spincast-like structure and the emergence of lamellar order on various substrates. Our findings, which cover a wide range of annealing temperatures, include the formation of islands and holes and non-monotonic behavior of end-to-end distance with temperature. We explore the details of the energy within the films and their implications for the observed morphologies

Molecular dynamics study of block copolymer thin film morphology:  Effect of substrate and free surface

240th National Meeting (2010)

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