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Advanced Materials

Optofluidic Synthesis of Electroresponsive Photonic Janus Balls with Isotropic Structural Colors

Authors

  • Shin-Hyun Kim,

    1. National Creative Research Initiative Center for Integrated Optofluidic Systems Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology Daejeon, 305-701 (Korea)
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  • Seog-Jin Jeon,

    1. National Creative Research Initiative Center for Integrated Optofluidic Systems Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology Daejeon, 305-701 (Korea)
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  • Woong Chan Jeong,

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

    1. National Creative Research Initiative Center for Integrated Optofluidic Systems Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology Daejeon, 305-701 (Korea)
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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 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 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 Education, Science & 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. Supporting Information is available online from Wiley InterScience or from the authors.

Abstract

Electroresponsive photonic Janus balls with optical and electrical anisotropy were prepared using a high-throughput optofluidic device, which produced monodisperse emulsion drops. Self-organized colloidal crystals in emulsion droplets displayed isotropic structural colors in their own respective domains. Electrical anisotropy induced by the presence of carbon black enabled alignment of the balls under the AC electric field.

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