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Title: Directed Assembly of Lamellae Forming Block Copolymer Thin Films near the Order-Disorder Transition

The impact of thin film confinement on the ordering of lamellae was investigated using symmetric poly(styrene-b-[isoprene-ran-epoxyisoprene]) diblock copolymers bound by nonpreferential wetting interfaces. The order–disorder transition temperature (T ODT) and the occurrence of composition fluctuations in the disordered state are not significantly affected by two-dimensional confinement. Directed self-assembly using chemical patterning is demonstrated near T ODT. These results establish the minimum feature size attainable using directed self-assembly of a given diblock copolymer system.
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Publication Date:
OSTI Identifier:
Resource Type:
Journal Article
Resource Relation:
Journal Name: Nano Lett.; Journal Volume: 14; Journal Issue: (1) ; 01, 2014
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org:
National Science Foundation (NSF)
Country of Publication:
United States