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Advanced Materials

Three-dimensional Directed Assembly of Block Copolymers together with Two-dimensional Square and Rectangular Nanolithography

Authors

  • Shengxiang Ji,

    1. Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China
    2. Department of Chemical & Biological Engineering, University of Wisconsin, 1415 Engineering Drive, Madison, WI 53706, USA
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  • Umang Nagpal,

    1. Department of Chemical & Biological Engineering, University of Wisconsin, 1415 Engineering Drive, Madison, WI 53706, USA
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  • Wen Liao,

    1. Department of Chemical & Biological Engineering, University of Wisconsin, 1415 Engineering Drive, Madison, WI 53706, USA
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  • Chi-Chun Liu,

    1. Department of Chemical & Biological Engineering, University of Wisconsin, 1415 Engineering Drive, Madison, WI 53706, USA
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  • Juan J. de Pablo,

    1. Department of Chemical & Biological Engineering, University of Wisconsin, 1415 Engineering Drive, Madison, WI 53706, USA
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  • Paul F. Nealey

    Corresponding author
    1. Department of Chemical & Biological Engineering, University of Wisconsin, 1415 Engineering Drive, Madison, WI 53706, USA
    • Department of Chemical & Biological Engineering, University of Wisconsin, 1415 Engineering Drive, Madison, WI 53706, USA.
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Abstract

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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