Writing mesoscale patterns in block copolymer thin films through channel flow of a nonsolvent fluid

Vincent Pelletier, Douglas H. Adamson, Richard A. Register, Paul M. Chaikin

    Research output: Contribution to journalArticle

    Abstract

    The authors demonstrate how a nonsolvent fluid, flowing over the surface of a block copolymer thin film in a complex path defined by a channel, can locally tailor the alignment of cylindrical microdomains. The cylinders have a periodicity of ∼30 nm, while the mesoscale pattern has a millimeter length scale. A diverging-converging channel is employed to measure alignment quality over a range of applied stresses in a single experiment; the results are compared with analogous measurements where the stress is applied through a controlled-stress rheometer, and can be satisfactorily described by a melting-recrystallization model.

    Original languageEnglish (US)
    Article number163105
    JournalApplied Physics Letters
    Volume90
    Issue number16
    DOIs
    StatePublished - 2007

    Fingerprint

    channel flow
    block copolymers
    fluids
    thin films
    alignment
    rheometers
    periodic variations
    melting

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

    Cite this

    Writing mesoscale patterns in block copolymer thin films through channel flow of a nonsolvent fluid. / Pelletier, Vincent; Adamson, Douglas H.; Register, Richard A.; Chaikin, Paul M.

    In: Applied Physics Letters, Vol. 90, No. 16, 163105, 2007.

    Research output: Contribution to journalArticle

    Pelletier, Vincent ; Adamson, Douglas H. ; Register, Richard A. ; Chaikin, Paul M. / Writing mesoscale patterns in block copolymer thin films through channel flow of a nonsolvent fluid. In: Applied Physics Letters. 2007 ; Vol. 90, No. 16.
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