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- Title
Carbon nanotube modified cellulose nonwovens: superhydrophobic, breathable, and sensitive for drowning alarm and motion monitoring.
- Authors
Zhang, Rui; Ye, Suxian; Suzuki, Ryuki; Xie, Chengbo; Wang, Jian; Huang, Weizhe; Zou, Zhuanyong
- 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.
- Subjects
CARBON nanotubes; STRUCTURAL health monitoring; CELLULOSE fibers; PRESSURE sensors; CELLULOSE; RANGE of motion of joints; CONTACT angle; NONWOVEN textiles
- Publication
Cellulose, 2024, Vol 31, Issue 5, p3143
- ISSN
0969-0239
- Publication type
Article
- DOI
10.1007/s10570-023-05695-7