Advanced Materials

Thermoresponsive Hydrogel Photonic Crystals by Three-Dimensional Holographic Lithography

Authors

  • Ji-Hwan Kang,

    1. National Creative Research Initiative Center for Integrated Optofluidic Systems Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology 335 Gwahangno, Yuseong-gu, Daejeon, 305-701 (Korea)
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  • Jun Hyuk Moon,

    1. Department of Chemical & Biomolecular Engineering Sogang University 1 Shinsu-dong, Mapo-gu, Seoul, 121-742 (Korea)
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  • Seung-Kon Lee,

    1. National Creative Research Initiative Center for Integrated Optofluidic Systems Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology 335 Gwahangno, Yuseong-gu, Daejeon, 305-701 (Korea)
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  • Sung-Gyu Park,

    1. National Creative Research Initiative Center for Integrated Optofluidic Systems Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology 335 Gwahangno, Yuseong-gu, Daejeon, 305-701 (Korea)
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  • Se Gyu Jang,

    1. National Creative Research Initiative Center for Integrated Optofluidic Systems Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology 335 Gwahangno, Yuseong-gu, Daejeon, 305-701 (Korea)
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  • Shu Yang,

    1. Department of Materials Science and Engineering University of Pennsylvania Philadelphia, PA 19104 (USA)
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  • Seung-Man Yang

    Corresponding author
    1. National Creative Research Initiative Center for Integrated Optofluidic Systems Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology 335 Gwahangno, Yuseong-gu, Daejeon, 305-701 (Korea)
    • National Creative Research Initiative Center for Integrated Optofluidic Systems Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology 335 Gwahangno, Yuseong-gu, Daejeon, 305-701 (Korea).
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  • This work was supported by a grant from the Creative Research Initiative Program of the Ministry of Science and Technology for “Complementary Hybridization of Optical and Fluidic Devices for Integrated Optofluidic Systems”. The authors also appreciate partial support from the Brain Korea 21 Program. J.H.K. thanks Jae-Hoon Choi for assistance with FTIR measurements. Supporting Information is available online from Wiley InterScience or from the authors.

Abstract

Well-defined three dimensional photonic crystals (PCs) of hydrogels are fabricated by prism holographic lithography over large areas. The hydrogel PCs, swollen in the humidity of air, show a tunable optical stop-band in response to temperature. The thermoresponsive behavior is caused by viscoelastic deformation upon temperature change, which is investigated by capturing the structure with silica.

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