Multi-Level Micro/Nanotexturing by Three-Dimensionally Controlled Photofluidization and its Use in Plasmonic Applications

Authors

  • Hong Suk Kang,

    1. Graduate School of EEWS, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Korea
    Current affiliation:
    1. These authors equally contributed to this work.
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  • Seungwoo Lee,

    Corresponding author
    1. Dana-Farber Cancer Institute and Harvard Medical School, Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02215, USA
    2. Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Korea
    Current affiliation:
    1. These authors equally contributed to this work.
    • Seungwoo Lee, Dana-Farber Cancer Institute and Harvard Medical School, Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02215, USA.

      Jung-Ki Park, Graduate School of EEWS, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Korea

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  • Sol-Ah Lee,

    1. Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Korea
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  • Jung-Ki Park

    Corresponding author
    1. Graduate School of EEWS, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Korea
    2. Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Korea
    • Seungwoo Lee, Dana-Farber Cancer Institute and Harvard Medical School, Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02215, USA.

      Jung-Ki Park, Graduate School of EEWS, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Korea

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Abstract

original image

The Field-Gradient Effect extends the photofluidization of azobenzene materials to 3D, multi-level micro/nanotexturing with a newly conceptualized design strategy based on “field-gradient photofluidization”. In particular, we successfully characterized the vertical gradient optical absorption within the azobenzene material and the resulting field-gradient photofluidization both theoretically and experimentally. Furthermore, we could create the heterogeneously integrated micro/nanotextures at any desired surface heights, capability that is potentially beneficial for plasmonic applications.

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