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Ti3C2Tx Aerogel-Based Wearable Humidity Sensors with Low Hysteresis and High Linearity for Expiratory Comfort Management
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    Ti3C2Tx Aerogel-Based Wearable Humidity Sensors with Low Hysteresis and High Linearity for Expiratory Comfort Management
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    • Yanan Xiao
      Yanan Xiao
      State Key Laboratory of Integrated Optoelectronics, Key Laboratory of Advanced Gas Sensors, Jilin Province, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
      More by Yanan Xiao
    • Qi Pu
      Qi Pu
      State Key Laboratory of Integrated Optoelectronics, Key Laboratory of Advanced Gas Sensors, Jilin Province, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
      More by Qi Pu
    • Xiaoteng Jia*
      Xiaoteng Jia
      State Key Laboratory of Integrated Optoelectronics, Key Laboratory of Advanced Gas Sensors, Jilin Province, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
      *Email: [email protected]
      More by Xiaoteng Jia
    • Tianyi Gu
      Tianyi Gu
      State Key Laboratory of Integrated Optoelectronics, Key Laboratory of Advanced Gas Sensors, Jilin Province, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
      More by Tianyi Gu
    • Yong Liu
      Yong Liu
      State Key Laboratory of Integrated Optoelectronics, Key Laboratory of Advanced Gas Sensors, Jilin Province, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
      More by Yong Liu
    • Peng Sun
      Peng Sun
      State Key Laboratory of Integrated Optoelectronics, Key Laboratory of Advanced Gas Sensors, Jilin Province, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
      International Center of Future Science, Jilin University, Changchun 130012, China
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    • Fangmeng Liu*
      Fangmeng Liu
      State Key Laboratory of Integrated Optoelectronics, Key Laboratory of Advanced Gas Sensors, Jilin Province, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
      International Center of Future Science, Jilin University, Changchun 130012, China
      *Email: [email protected]
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    • Geyu Lu
      Geyu Lu
      State Key Laboratory of Integrated Optoelectronics, Key Laboratory of Advanced Gas Sensors, Jilin Province, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
      International Center of Future Science, Jilin University, Changchun 130012, China
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    Other Access OptionsSupporting Information (4)

    ACS Sensors

    Cite this: ACS Sens. 2024, 9, 12, 6709–6716
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    https://doi.org/10.1021/acssensors.4c02338
    Published November 26, 2024
    Copyright © 2024 American Chemical Society

    Abstract

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    Wearable and flexible humidity sensors hold great promise for expiratory comfort management. However, the high hysteresis and poor detection linearity restrict the immediate and accurate detection of humidity. Herein, we have prepared Ti3C2Tx MXene/chitosan/polyvinylidene difluoride aerogels with a controllable hydrophobic/hydrophilic surface to regulate the catch/escape behavior of H2O molecules. The MXene aerogel-based humidity sensor demonstrates low hysteresis (3.2% relative humidity) and a high linear relationship (R2 = 0.99). Integrated with a control circuit, an expiratory humidity monitoring system is constructed for nasal comfort management as a humidity switch. The exhaled breath humidity can be automatically regulated during dry exhalation conditions. This wearable humidity sensor enables the real-time monitoring and intelligent control of nasal exhaled humidity. This work represents a new avenue for improving breathing comfort and preventing respiratory diseases.

    Copyright © 2024 American Chemical Society

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    Supporting Information

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    The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acssensors.4c02338.

    • Additional materials characterization including SEM, AFM, and EDS images of sensitive materials; photograph of devices; time stability of humidity sensors; and details of control circuits (PDF)

    • Operation process of the nasal humidity management system at an 11% RH (MP4)

    • Operation process of the nasal humidity management system at a 59% RH (MP4)

    • Operation process of the nasal humidity management system fixed on the volunteer during breath-holding and exhaling (MP4)

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    Cited By

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    This article is cited by 1 publications.

    1. Yunlong Yu, Wei Zhang, Yaping Song, Yanyu Cui, Sen Liu, Teng Fei, Tong Zhang. Application of partially zwitterionic poly(ionic liquid)s in humidity sensors. Journal of Colloid and Interface Science 2025, 684 , 192-200. https://doi.org/10.1016/j.jcis.2025.01.030

    ACS Sensors

    Cite this: ACS Sens. 2024, 9, 12, 6709–6716
    Click to copy citationCitation copied!
    https://doi.org/10.1021/acssensors.4c02338
    Published November 26, 2024
    Copyright © 2024 American Chemical Society

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