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Europhys. Lett., 53 (6), pp. 722728 (2001) EUROPHYSICS LETTERS 15 March 2001

Summary: Europhys. Lett., 53 (6), pp. 722728 (2001)
Diblock copolymer ordering induced by patterned surfaces
Y. Tsori and D. Andelman
School of Physics and Astronomy
Raymond and Beverly Sackler Faculty of Exact Sciences
Tel Aviv University - 69978 Ramat Aviv, Israel
(received 20 June 2000; accepted in final form 12 January 2001)
PACS. 36.20.-r Macromolecules and polymer molecules.
PACS. 68.55.-a Thin film structure and morphology.
PACS. 61.25.Hq Macromolecular and polymer solutions; polymer melts; swelling.
Abstract. We use a Ginzburg-Landau free-energy functional to investigate diblock copoly-
mer morphologies when the copolymer melt interacts with one surface or is confined between
two chemically patterned surfaces. For temperatures above the order-disorder transition a
complete linear response description of the copolymer melt is given, in terms of an arbitrary
two-dimensional surface pattern. The appearance of order in the direction parallel to the sur-
face is found as a result of the order in the perpendicular direction. Below the order-disorder
transition and in a thin-film geometry, our procedure enables an analytic calculation of dis-
torted perpendicular and tilted lamellar phases in the presence of uniform or striped surface


Source: Andelman, David - School of Physics and Astronomy, Tel Aviv University


Collections: Materials Science; Physics