Micropatterns of non-circular droplets of nanostructured Ps-B-Peo copolymer by solvent-assisted wetting on a chemically periodic surface

Tae Hee Kim, Youn Jung Park, Giyoung Song, Dong Ha Kim, June Huh, Olaf Karthaus, Cheolmin Park

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A method to fabricate micropatterns of non-circular droplets of a self-assembled block copolymer by solvent-assisted wetting on chemically periodic surface is presented. The block copolymer is dewetted on a topographic pre-pattern to form an array of microdroplets with a sphere-capped shape and circular contact line. The droplets are then transferred onto a chemically periodic Au line pattern microcontact-printed with two types of self-assembled monolayers (SAMs). Solvent vapor application provides sufficient mobility to the block copolymer molecules to induce spreading of the transferred droplets, resulting in two types of non-circular microdroplet growth. The growth behavior depends on the size of initial droplets relative to periodic line width and on the initial registries of as-transferred droplets.

Original languageEnglish
Pages (from-to)431-438
Number of pages8
JournalMacromolecular Chemistry and Physics
Volume213
Issue number4
DOIs
Publication statusPublished - 2012 Feb 27

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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