Strain-Dependent Nanowrinkle Confinement of Block Copolymers

Young Ah Lucy Lee, Victor Pryamitsyn, Dongjoon Rhee, Monica Olvera De La Cruz, Teri W. Odom

Research output: Contribution to journalArticle

Abstract

This paper describes an all-soft, templated assembly of block copolymers (BCPs) with programmable alignment. Using polymeric nanowrinkles as a confining scaffold, poly(styrene)-block-poly(dimethylsiloxane) (PS-b-PDMS) BCPs were assembled to be parallel or perpendicular to the wrinkle orientation by manipulating the substrate strain. Self-consistent field theory modeling revealed that wrinkle curvature and surface affinity govern the BCP structural formation. Furthermore, control of BCP alignment was demonstrated for complex wrinkle geometries, various copolymer molecular weights, and functional wrinkle skin layers. This integration of BCP patterning with flexible 3D architectures offers a promising nanolithography approach for next-generation soft electronics.

Original languageEnglish
Pages (from-to)1433-1439
Number of pages7
JournalNano letters
Volume20
Issue number2
DOIs
Publication statusPublished - Feb 12 2020

Keywords

  • block copolymers
  • confinement
  • directed self-assembly
  • self-consistent field theory
  • wrinkles

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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  • Cite this

    Lee, Y. A. L., Pryamitsyn, V., Rhee, D., De La Cruz, M. O., & Odom, T. W. (2020). Strain-Dependent Nanowrinkle Confinement of Block Copolymers. Nano letters, 20(2), 1433-1439. https://doi.org/10.1021/acs.nanolett.9b05189