Abstract
Due to its exceptional sensitivity and conductivity, flexible wearable sensors have received a lot of interest recently in the fields of human health monitoring and motion detection. In this work, a superhydrophobic and extremely permeable pressure sensor using multilayer hydroentanglement cellulose non-woven fabrics modified with carbon nanotubes was prepared by ultrasonic-assisted modification and impregnation. The sensor has high sensitivity (11.78 kPa-1 in 0-5.20 kPa and 0.058 kPa-1 in 5.20-210 kPa), fast response time (49 ms), ultra-wide pressure detection range (0–210 kPa), excellent air permeability (688 mm/s) and long-term reliability. With a 155° water contact angle, it also exhibits exceptional superhydrophobic characteristics, providing an outstanding self-cleaning effect. Importantly, the sensor has been successfully applied to monitor weak movements (pulse, voice recognition) and joint movements in real-time, which has paved the way for human health monitoring and disease diagnosis. In addition, using the superhydrophobicity and sensitivity of the sensor, it can be connected to a mobile phone via Bluetooth for remote real-time monitoring and applied to drowning alarm monitoring in underwater environments, showing great promise in practical applications.
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The data in this article are reliable and are available from the corresponding author.
Change history
05 March 2024
A Correction to this paper has been published: https://doi.org/10.1007/s10570-024-05765-4
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Acknowledgements
This work was supported by Research Start-up Fund Project of Shaoxing University and Zhejiang Provincial Science and Technology Innovation Program (New Young Talent Program) for College Students(2023R465032), the General Scientific Research Project of Zhejiang Education Department (Y202351466).
Funding
This work was supported by Zhejiang Provincial Science and Technology Innovation Program (New Young Talent Program) for College Students grant number (2023R465032), Research Start-up Fund Project of Shaoxing University.
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RZ: Data collection, Analysis, Software, Writing-Original Draft; SY: Data curation, Validation; RS: Review & Editing; CX: Software, Data curation; JW: Conceptualization, Supervision, Writing-Review & Editing; WH: Visualization, Validation; ZZ: Supervision, Writing—Review & Editing.
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The original online version of this article was revised: The authors discovered that in the process of processing the data, they have mistakenly treated Rmin as R0, resulting in a deviation in the result, which resulted in having to update the sensitivity section in Figure 4 and 6. In addition to the relative resistance values of a,b,c,d,g in Figure 5, the relative resistance values of a, b, c, d, e, and l in Figure 8 and the ordinate in Figure 9 also need to be updated, and do not affect the main results and conclusions of the paper. Due to this error, Figures 4, 5, 6, 8 and 9 are updated.
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Zhang, R., Ye, S., Suzuki, R. et al. Carbon nanotube modified cellulose nonwovens: superhydrophobic, breathable, and sensitive for drowning alarm and motion monitoring. Cellulose 31, 3143–3161 (2024). https://doi.org/10.1007/s10570-023-05695-7
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DOI: https://doi.org/10.1007/s10570-023-05695-7