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Organohydrogel-based transparent terahertz absorber via ionic conduction loss

Author

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  • Wenke Xie

    (University of Electronic Science and Technology of China)

  • Qian Tang

    (University of Electronic Science and Technology of China)

  • Jinlong Xie

    (University of Electronic Science and Technology of China)

  • Yang Fei

    (University of Electronic Science and Technology of China)

  • Hujie Wan

    (University of Electronic Science and Technology of China)

  • Tao Zhao

    (University of Electronic Science and Technology of China
    University of Electronic Science and Technology of China
    University of Electronic Science and Technology of China
    University of Electronic Science and Technology of China)

  • Tianpeng Ding

    (University of Electronic Science and Technology of China
    University of Electronic Science and Technology of China)

  • Xu Xiao

    (University of Electronic Science and Technology of China
    University of Electronic Science and Technology of China)

  • Qiye Wen

    (University of Electronic Science and Technology of China
    University of Electronic Science and Technology of China
    University of Electronic Science and Technology of China)

Abstract

The fast-growing terahertz technologies require high-performance terahertz absorber for suppressing electromagnetic interference. Since the dissipation mechanism in terahertz band usually focuses on electronic conduction loss, almost all terahertz absorbers are constructed with electronically conducting materials being opaque, which limits their applications in scenarios requiring high visible transmittance. Here, we demonstrate a transparent terahertz absorber based on permittivity-gradient elastomer-encapsulated-organohydrogel. Our organohydrogel-based terahertz absorber exhibits a high absorbing property (average reflection loss of 49.03 dB) in 0.5–4.5 THz band with a thin thickness of 700 μm and a high average visible transmittance of 85.51%. The terahertz absorbing mechanism mainly derives from the ionic conduction loss of the polar liquid in organohydrogel. Besides, the hydrophobic and adhesive elastomer coating endows this terahertz absorber high absorbing stability and interfacial adhesivity. This work paves a viable way to designing transparent terahertz absorbers.

Suggested Citation

  • Wenke Xie & Qian Tang & Jinlong Xie & Yang Fei & Hujie Wan & Tao Zhao & Tianpeng Ding & Xu Xiao & Qiye Wen, 2024. "Organohydrogel-based transparent terahertz absorber via ionic conduction loss," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-023-44344-2
    DOI: 10.1038/s41467-023-44344-2
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    References listed on IDEAS

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    1. Lei Shi & Tianxiang Zhu & Guoxin Gao & Xinyu Zhang & Wei Wei & Wenfeng Liu & Shujiang Ding, 2018. "Highly stretchable and transparent ionic conducting elastomers," Nature Communications, Nature, vol. 9(1), pages 1-7, December.
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