Undulational Instabilities of Smectic Thin Films on a Heterogeneous Patterned Surface Under Positive and Negative Strains: The Case of Diblock Copolymers

Pereira, G.Williams, David2015-12-130021-9606http://hdl.handle.net/1885/93617We consider the problem of a thin smectic film placed on a periodically striped solid surface, with stripe width λ, and with the upper surface free. The striped surface-smectic fluid interfacial energy induces the lamellae to align perpendicularly to theKeywords: Bulk liquid; Diblock copolymer thin films; Free upper surface; Patterned surface; Smectic films; Solid surface; Stripe width; Upper surface; Thin films; Block copolymersUndulational Instabilities of Smectic Thin Films on a Heterogeneous Patterned Surface Under Positive and Negative Strains: The Case of Diblock Copolymers19992015-12-12