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Shengxiang Ji, Umang Nagpal, Wen Liao, Chi-Chun Liu, Juan J. de Pablo and Paul F. Nealey Three-dimensional Directed Assembly of Block Copolymers together with Two-dimensional Square and Rectangular Nanolithography Advanced Materials 23

Version of Record online: 7 JUL 2011 | DOI: 10.1002/adma.201101813

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Self-assembling sphere-forming block copolymers that normally adopt a hexagonal packing in thin films were directed to assemble on chemically patterned surfaces into their three-dimensional bulk-like body-centered cubic morphology; two-dimensional manufacturing-relevant patterns with square and rectangular symmetry could be derived from the films using molecular transfer printing at a resolution beyond the limits of current lithographic tools and materials.

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