Moisture-resistant MXene-sodium alginate sponges with sustained superhydrophobicity for monitoring human activities

Wearable mechanical sensors are susceptible to moisture, causing inaccuracy for monitoring human health and body motions. Although the superhydrophobic barrier on the sensor surface has been extensively explored as a passive water repel strategy, the dense superhydrophobic surface often has limited flexibility and inevitably degradates in high humidity or saturated water vapor environments due to the nucleation and growth of small size water molecules. This work reports a superhydrophobic MXene-sodium alginate sponge (SMSS) pressure sensor with efficient low-voltage Joule heating to provide sustained superhydrophobicity for moisture-resistant sensing. The superhydrophobic surface on the outside can repel large size water droplets, whereas the Joule heating efficiently removes small size water droplets and significantly reduces water molecule adsorption throughout the sponge. Because of the sustained superhydrophobic barrier and high porosity in the sponge, the SMSS pressure sensor with high sensitivity, large sensing range, and quick response can accurately and reliably function and monitor varying biophysical signals even in extreme use scenarios with high humidity or water vapor environments.

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Work Title Moisture-resistant MXene-sodium alginate sponges with sustained superhydrophobicity for monitoring human activities
Access
Open Access
Creators
  1. Yangchengyi Liu
  2. Zhong Sheng
  3. Jielong Huang
  4. Weiyi Liu
  5. Hongyan Ding
  6. Jinfeng Peng
  7. Bowen Zhong
  8. Yuhui Sun
  9. Xiaoping Ouyang
  10. Huanyu Cheng
  11. Xiufeng Wang
Keyword
  1. MXene-sodium alginate sponges
  2. Joule heating
  3. Superhydrophobicity degradation
  4. Moisture-insensitive
  5. Human activities monitoring
License In Copyright (Rights Reserved)
Work Type Article
Publisher
  1. Chemical Engineering Journal
Publication Date January 6, 2022
Publisher Identifier (DOI)
  1. https://doi.org/10.1016/j.cej.2021.134370
Deposited July 19, 2022

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Work History

Version 1
published

  • Created
  • Added CEJ-D-21-20836.pdf
  • Added Creator Yangchengyi Liu
  • Added Creator Zhong Sheng
  • Added Creator Jielong Huang
  • Added Creator Weiyi Liu
  • Added Creator Hongyan Ding
  • Added Creator Jinfeng Peng
  • Added Creator Bowen Zhong
  • Added Creator Yuhui Sun
  • Added Creator Xiaoping Ouyang
  • Added Creator Huanyu Cheng
  • Added Creator Xiufeng Wang
  • Published
  • Updated Keyword, Publication Date Show Changes
    Keyword
    • MXene-sodium alginate sponges, Joule heating, Superhydrophobicity degradation, Moisture-insensitive, Human activities monitoring
    Publication Date
    • 2022-03-15
    • 2022-01-06
  • Updated