Interfaces and Grain Boundaries of Lamellar Phases

Abstract

Interfaces between lamellar and disordered phases, and grain boundaries within lamellar phases, are investigated employing a simple Landau free energy functional. The former are examined using analytic, approximate methods in the weak segregation limit, leading to density profiles which can extend over many wavelengths of the lamellar phase. The latter are studied numerically and exactly. We find a change from smooth chevron configurations typical of small tilt angles to distorted omega configurations at large tilt angles in agreement with experiment.

9 pages, 6 figures 9 pages, 6 figures

References in corpus (1)

• Interfaces of Modulated Phases

Cited by in corpus (6)

• Surface induced ordering in thin film diblock copolymers: tilted lamellar phases
• Defects in Lamellar Diblock Copolymers: Chevron- and Omega-shaped Tilt Boundaries
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• Coupled Modulated Bilayers
• Shear induced alignment in a model of a block copolymer
• Diblock Copolymer Ordering Induced by Patterned Surfaces Above the Order-Disorder Transition