Advanced Materials

Nanopattern Fabrication of Gold on Hydrogels and Application to Tunable Photonic Crystal

Authors

  • Naonobu Shimamoto,

    1. Molecular and System Life Science Unit, RIKEN Advanced Science Institute, Hirosawa 2-1, Wako, Saitama 351-0198 Japan
    2. Research Institute for Electronic Science, Hokkaido University, Kita 20, Nishi 10, Kita-ku, Sapporo, Hokkaido 001-0020 Japan
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  • Yoshito Tanaka,

    1. Research Institute for Electronic Science, Hokkaido University, Kita 20, Nishi 10, Kita-ku, Sapporo, Hokkaido 001-0020 Japan
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  • Hideyuki Mitomo,

    1. Molecular and System Life Science Unit, RIKEN Advanced Science Institute, Hirosawa 2-1, Wako, Saitama 351-0198 Japan
    2. Research Institute for Electronic Science, Hokkaido University, Kita 20, Nishi 10, Kita-ku, Sapporo, Hokkaido 001-0020 Japan
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  • Ryuzo Kawamura,

    1. Molecular and System Life Science Unit, RIKEN Advanced Science Institute, Hirosawa 2-1, Wako, Saitama 351-0198 Japan
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  • Kuniharu Ijiro,

    1. Molecular and System Life Science Unit, RIKEN Advanced Science Institute, Hirosawa 2-1, Wako, Saitama 351-0198 Japan
    2. Research Institute for Electronic Science, Hokkaido University, Kita 20, Nishi 10, Kita-ku, Sapporo, Hokkaido 001-0020 Japan
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  • Keiji Sasaki,

    1. Research Institute for Electronic Science, Hokkaido University, Kita 20, Nishi 10, Kita-ku, Sapporo, Hokkaido 001-0020 Japan
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  • Yoshihito Osada

    Corresponding author
    1. Molecular and System Life Science Unit, RIKEN Advanced Science Institute, Hirosawa 2-1, Wako, Saitama 351-0198 Japan
    • Molecular and System Life Science Unit, RIKEN Advanced Science Institute, Hirosawa 2-1, Wako, Saitama 351-0198 Japan.
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Abstract

Pattern fabrication was performed by transcribing Au nano-dots from Si to the hydrogel surface. The nano-dots exhibited excellent adhesion despite extensive hydrogel expansion and contraction. Au nano-dots on a hydrogel can produce iridescent color, and its spectral response can be finely modulated by controlling the nano-dot spacing. This is a novel tunable photonic crystal made from soft and wet matter.

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