Bosse, A.
, Garcia-Cervera, C.
and Fredrickson, G.
(2007),
Microdomain Ordering in Laterally Confined Block Copolymer Thin Films, Macromolecules, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=852775
(Accessed September 8, 2024)
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Microdomain Ordering in Laterally Confined Block Copolymer Thin Films
Published
Author(s)
, Carlos Garcia-Cervera, Glenn Fredrickson
Abstract
We examine the effects of small-scale, hexagonal, lateral confinement on microdomain ordering in $AB$ diblock copolymer thin films using self-consistent field theory (SCFT) simulations. Specifically, we examine a hexagonal confinement well with side length $L$ approximately equal to five cylindrical microdomain lattice spacings. The commensurability constraints of the small-scale lateral confinement, coupled with surface-induced effects allows the confining well to have a significant effect on the perfection of microdomain order. We identify commensurability windows in $L$ that depend on the segment wall interaction, and the ``temperature'' annealing rate (modeled as a Flory $\chi ~ 1/T$ annealing rate). The effect of added majority-block homopolymer is also explored.Citation
Macromolecules
Volume
40
Pub Type
Journals
Download Paper
Keywords
block copolymers, commensurability, lateral confinement, mean-field, self-assembly, simulations, surface-directed ordering, thin films
Citation
Issues
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Created November 29, 2007, Updated February 19, 2017