Abstract
The behavior of a diblock copolymer lamellar layer, in the melt, assembled at a substrate with a small-amplitude periodic roughness, characterized by a wavevector q, is studied. The polymer configurations are described using the Alexander-de Gennes model of polymer brushes. For a single lamella of thickness h, at small wavevectors (qh q c , the undulation of the free surface has a sign opposite to that of the solid surface.
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