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Graded intrafillable architecture-based iontronic pressure sensor with ultra-broad-range high sensitivity

Author

Listed:
  • Ningning Bai

    (Southern University of Science and Technology)

  • Liu Wang

    (Southern University of Science and Technology
    Massachusetts Institute of Technology)

  • Qi Wang

    (Southern University of Science and Technology)

  • Jue Deng

    (Southern University of Science and Technology
    Massachusetts Institute of Technology)

  • Yan Wang

    (Southern University of Science and Technology)

  • Peng Lu

    (Southern University of Science and Technology)

  • Jun Huang

    (Southern University of Science and Technology)

  • Gang Li

    (Southern University of Science and Technology)

  • Yuan Zhang

    (Southern University of Science and Technology)

  • Junlong Yang

    (Southern University of Science and Technology)

  • Kewei Xie

    (Southern University of Science and Technology)

  • Xuanhe Zhao

    (Massachusetts Institute of Technology)

  • Chuan Fei Guo

    (Southern University of Science and Technology
    Southern University of Science and Technology)

Abstract

Sensitivity is a crucial parameter for flexible pressure sensors and electronic skins. While introducing microstructures (e.g., micro-pyramids) can effectively improve the sensitivity, it in turn leads to a limited pressure-response range due to the poor structural compressibility. Here, we report a strategy of engineering intrafillable microstructures that can significantly boost the sensitivity while simultaneously broadening the pressure responding range. Such intrafillable microstructures feature undercuts and grooves that accommodate deformed surface microstructures, effectively enhancing the structural compressibility and the pressure-response range. The intrafillable iontronic sensor exhibits an unprecedentedly high sensitivity (Smin > 220 kPa−1) over a broad pressure regime (0.08 Pa-360 kPa), and an ultrahigh pressure resolution (18 Pa or 0.0056%) over the full pressure range, together with remarkable mechanical stability. The intrafillable structure is a general design expected to be applied to other types of sensors to achieve a broader pressure-response range and a higher sensitivity.

Suggested Citation

  • Ningning Bai & Liu Wang & Qi Wang & Jue Deng & Yan Wang & Peng Lu & Jun Huang & Gang Li & Yuan Zhang & Junlong Yang & Kewei Xie & Xuanhe Zhao & Chuan Fei Guo, 2020. "Graded intrafillable architecture-based iontronic pressure sensor with ultra-broad-range high sensitivity," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-019-14054-9
    DOI: 10.1038/s41467-019-14054-9
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    Cited by:

    1. Bo Li & Chuanyang Cai & Yang Liu & Fang Wang & Bin Yang & Qikai Li & Pengxiang Zhang & Biao Deng & Pengfei Hou & Weishu Liu, 2023. "Ultrasensitive mechanical/thermal response of a P(VDF-TrFE) sensor with a tailored network interconnection interface," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    2. Yuan Zhang & Junlong Yang & Xingyu Hou & Gang Li & Liu Wang & Ningning Bai & Minkun Cai & Lingyu Zhao & Yan Wang & Jianming Zhang & Ke Chen & Xiang Wu & Canhui Yang & Yuan Dai & Zhengyou Zhang & Chuan, 2022. "Highly stable flexible pressure sensors with a quasi-homogeneous composition and interlinked interfaces," Nature Communications, Nature, vol. 13(1), pages 1-12, December.

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