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Issue 72, 2014
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Mixed-morphology and mixed-orientation block copolymer bilayers

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Block copolymers have attracted considerable attention due to their ability to self-assemble into highly regular structures, spanning length scales from several nanometers to over 100 nm. Block copolymers confined in thin films have been extensively utilized as soft templates for nanofabrication, but most applications have been restricted to single-layer templates with smectic and hexagonal symmetries. Here we show that a multi-step approach that includes shear alignment, thin film lift-off, and stacking can access novel three-dimensional block copolymer structures with long-range order and mixed symmetries. This technique allows control over the long-range order and also expands the range of nanolithographic templates accessible through guided self-assembly.

Graphical abstract: Mixed-morphology and mixed-orientation block copolymer bilayers

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Article information

07 Jul 2014
13 Aug 2014
First published
13 Aug 2014

RSC Adv., 2014,4, 38412-38417
Article type
Author version available

Mixed-morphology and mixed-orientation block copolymer bilayers

N. A. García, R. L. Davis, S. Y. Kim, P. M. Chaikin, R. A. Register and D. A. Vega, RSC Adv., 2014, 4, 38412
DOI: 10.1039/C4RA06764A

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