Journal
ACS NANO
Volume 16, Issue 5, Pages 8161-8171Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.2c01540
Keywords
aramid nanofiber; carbon nanotube; aerogel; sensor; polypyrrole; information encryption
Categories
Funding
- National Nature Science Foundation of China [22178211]
- Key Research and Development Program of Shaanxi Province of China [2021ZDLGY14-05]
- Key Project of Shaanxi Provincial Department of Education, China [20JY002]
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A newly developed nanocomposite conductive fiber exhibits lightweight, high flexibility, and strong weavability, making it suitable for flexible wearable devices. The ANF/CNT/PPy aerogel fiber prepared in this study has low density, high conductivity, and tensile strength, and can be used for motion detection and information transmission with high sensitivity and long life.
Nanocomposite conductive fiber has been newly developed as a lightweight material with high flexibility and strong weavability, which can meet the requirements of flexible wearable devices. Herein, lightweight porous aramid nanofibers (ANF) and carbon nanotube (CNT) aerogel fibers coated with polypyrrole (PPy) layers are prepared by a wet spinning method for motion detection and information transmission. The ANF/CNT/PPy aerogel fiber with low density (56.3 mg/cm(3)), conductivity (6.43 S/m), and tensile strength (2.88 MPa) were used as motion sensors with high sensitivity (0.12) and long life (1000 cycles). At the same time, the differential conductivity of aerogel fibers is utilized to reduce the information transmission time (up to 46%). High- and low-temperature-resistant (-196 to 100 degrees C) aerogel fibers are also available as a quick heater and ionic solution detector. In summary, the prepared ANF/CNT/PPy aerogel fiber can be used as a multifunctional sensor for human-health detection and motion monitoring.
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