Fabrication of Ordered Nanostructured Arrays Using Poly(dimethylsiloxane) Replica Molds Based on Three-Dimensional Colloidal Crystals

Authors

  • Hong Kyoon Choi,

    1. Department of Chemical & Biomolecular Engineering (BK 21 Graduate Program) Korea Advanced Institute of Science and Technology 373-1 Guseong-dong, Yuseong-gu Daejeon, 305-701 (Republic of Korea)
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  • Mun Ho Kim,

    1. Research Park, LG Chem, Ltd. 104-1, Moonji-dong, Yuseong-gu Daejeon 305-380 (Republic of Korea)
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  • Sang Hyuk Im,

    Corresponding author
    1. Research Park, LG Chem, Ltd. 104-1, Moonji-dong, Yuseong-gu Daejeon 305-380 (Republic of Korea)
    • Research Park, LG Chem, Ltd. 104-1, Moonji-dong, Yuseong-gu Daejeon 305-380 (Republic of Korea).
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  • O Ok Park

    Corresponding author
    1. Department of Chemical & Biomolecular Engineering (BK 21 Graduate Program) Korea Advanced Institute of Science and Technology 373-1 Guseong-dong, Yuseong-gu Daejeon, 305-701 (Republic of Korea)
    • Department of Chemical & Biomolecular Engineering (BK 21 Graduate Program) Korea Advanced Institute of Science and Technology 373-1 Guseong-dong, Yuseong-gu Daejeon, 305-701 (Republic of Korea).
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Abstract

Hexagonally arrayed structures of colloidal crystals with uniform surface are a good candidate for master molds to be used in soft lithography. Here, the fabrication of periodically arrayed nanostructures using poly(dimethylsiloxane) (PDMS) molds based on three-dimensionally (3D) ordered colloidal crystals is reported. A robust, high-quality 3D colloidal-crystal master molds is prepared using the colloidal suspension containing a water-soluble polymer. The surface patterns of the 3D colloidal crystals can then be transferred onto a polymer film via soft lithography, by means of the replication of the surface pattern with PDMS. Various hexagonally arrayed nanostructure patterns can be fabricated, including close-packed and non-close-packed 2D arrays and honeycomb structures by the structural modification of the 3D colloidal-crystal templates. The replicated hexagonally arrayed structures can also be used as templates for producing colloidal crystals with 2D superlattices.

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