Response of block copolymer thin-film morphology to line-width roughness on a chemoepitaxial template

Paul N. Patrone, Gregg M. Gallatin

Research output: Contribution to journalReview article

5 Scopus citations

Abstract

Using the Leibler-Ohta-Kawasaki (LOK) phase-field model of block copolymers (BCPs), we characterize how line-width roughness (LWR) in the chemoepitaxial template affects the BCP microdomain shape. Specifically, we derive formulas for the monomer density and the microdomain interface profile of periodic, lamellar BCP melts whose template lines widths oscillate with frequency k. The key idea behind our approach is to identify variations in the microdomain interface positions (relative to their averages) as corresponding to a local excess of one of the monomer types. For lamellar systems, our analysis (i) shows that the BCP morphology arises from the constraint that the total mass in a microdomain is fixed, independent of LWR, and (ii) determines a length scale λ over which template LWR affects the polymer melt.

Original languageEnglish (US)
Pages (from-to)4824-4829
Number of pages6
JournalMacromolecules
Volume47
Issue number14
DOIs
StatePublished - Jul 22 2014

Fingerprint Dive into the research topics of 'Response of block copolymer thin-film morphology to line-width roughness on a chemoepitaxial template'. Together they form a unique fingerprint.

  • Cite this