Pascal Thebault, Stefan Niedermayer, Stefan Landis, Nicolas Chaix, Patrick Guenoun, Jean Daillant, Xingkun Man, David Andelman, Henri Orland
Finding affordable ways of generating high-density ordered nanostructures that can be transferred to a substrate is a major challenge for industrial applications like memories or optical devices with high resolution features. In this work, we report on a novel technique to direct self-assembled structures of block copolymers by NanoImprint Lithography. Surface energy of a reusable mold and nanorheology are used to organize the copolymers in defect-free structures over tens of micrometers in size. Versatile and controlled in-plane orientations of about 25 nm half-period lamellar nanostructures are achieved and, in particular, include applications to circular tracks of magnetic reading heads.
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http://arxiv.org/abs/1203.5318
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