Ordered Morphologies of Confined Diblock Copolymers

Details Ordered Morphologies of Confined Diblock Copolymers Ordered Morphologies of Confined Diblock Copolymers

2001-01-03

arxiv.org/abs/cond-mat/0101022v1

Mat. Res. Soc. Symp. Proc. 651, T8.1.1-T8.1.11 (2001)

Physics

Condensed Matter

Soft Condensed Matter

11 pages, 7 figures, Submitted to Materials Research Society Symposium Proceedings, Dynamics in Small Confining Systems, MRS F

Scientific paper

We investigate the ordered morphologies occurring in thin-films diblock copolymer. For temperatures above the order-disorder transition and for an arbitrary two-dimensional surface pattern, we use a Ginzburg-Landau expansion of the free energy to obtain a linear response description of the copolymer melt. The ordering in the directions perpendicular and parallel to the surface are coupled. Three dimensional structures existing when a melt is confined between two surfaces are examined. Below the order-disorder transition we find tilted lamellar phases in the presence of striped surface fields.

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