Advanced Materials

Controlled Orientation of Block Copolymers on Defect-Free Faceted Surfaces

Authors

  • Sung Woo Hong,

    1. Department of Polymer Science and Engineering, 120 Governors Drive, University of Massachusetts Amherst, Amherst, MA 01003, USA
    Current affiliation:
    1. Samsung Advanced Institute of Technology (SAIT), Mt. 14-1, Nongseo-dong, Giheung-gu, Yongin-si, Gyeonggi-do 446-712, Republic of Korea
    Search for more papers by this author
  • Dmitriy L. Voronov,

    1. Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
    Search for more papers by this author
  • Dong Hyun Lee,

    1. Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
    2. Department of Materials Science and Engineering and Department of Chemistry, University of California Berkeley, Berkeley, CA 94720, USA
    Current affiliation:
    1. Department of Polymer Science and Engineering, Dankook University, 126 Jukjeon-dong, Suji-gu, Yongin-si, Gyeonggi-do 448-701, Republic of Korea
    Search for more papers by this author
  • Alexander Hexemer,

    1. Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
    Search for more papers by this author
  • Howard A. Padmore,

    1. Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
    Search for more papers by this author
  • Ting Xu,

    1. Department of Materials Science and Engineering and Department of Chemistry, University of California Berkeley, Berkeley, CA 94720, USA
    Search for more papers by this author
  • Thomas P. Russell

    Corresponding author
    1. Department of Polymer Science and Engineering, 120 Governors Drive, University of Massachusetts Amherst, Amherst, MA 01003, USA
    • Department of Polymer Science and Engineering, 120 Governors Drive, University of Massachusetts Amherst, Amherst, MA 01003, USA.
    Search for more papers by this author

Abstract

The effect of a faceted surface geometry on controlling the direction of well-defined line patterns of block copolymer (BCP) microdomains over macroscopic areas is reported. Facets with asymmetric base angles can control the direction of BCP microdomains oriented either parallel or perpendicular to the facets depending on BCP film thickness.

original image

Ancillary