Coupling of wrinkle patterns to microsphere-array lithographic patterns

Takuya Ohzono, Sachiko I. Matsushita, Masatsugu Shimomura

    Research output: Contribution to journalArticle

    55 Citations (Scopus)

    Abstract

    We report a method to modulate spontaneously formed microwrinkle patterns on a metal-capped elastomer surface by introducing lithographic patterns (structures) on the original surface as spatial triggers for directed wrinkling. The lithographic patterns are designed to have approximately the same lateral length scales as the characteristic wavelength of the microwrinkles by utilizing self-assembled two-dimensional microsphere arrays with hexagonal packing as a lithographic mask. When the lateral periodicity of the lithographic pattern is close to the wavelength of wrinkles, a novel directional order originating from the hexagonal packing of microspheres is induced. Otherwise, the wrinkle crests tend to form along the small ridges of the lithographic structure. The compression direction-dependent and reversible ordering of wrinkle patterns by compressive strain is also found for patterns with directional order.

    Original languageEnglish
    Pages (from-to)227-230
    Number of pages4
    JournalSoft Matter
    Volume1
    Issue number3
    DOIs
    Publication statusPublished - 2005 Aug 28

    ASJC Scopus subject areas

    • Chemistry (miscellaneous)

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