期刊
NANOMATERIALS
卷 9, 期 10, 页码 -出版社
MDPI
DOI: 10.3390/nano9101399
关键词
Fe3O4 nanowire; silver; humidity sensor; respiration monitoring
类别
资金
- Science Challenge Project [TZ2018004]
- National Key R&D Program of China [2016YFB0303004]
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University
Functional textiles with unique functions, including free cutting, embroidery and changeable shape, will be attractive for smart wear of human beings. Herein, we fabricated a sandwich-like humidity sensor made from silver coated one-dimensional magnetite nanowire (Fe3O4 NW) arrays which were in situ grown on the surface of modified polypropylene nonwoven fabric via simultaneous radiation induced graft polymerization and co-precipitation. The humidity sensor exhibits an obvious response to the relative humidity (RH) ranging from RH 11% to RH 95% and its response value reaches a maximum of 6600% (Delta I/I-0) at 95% relative humidity (RH). The humidity sensor can be tailored into various shapes and embroidered on its surface without affecting its functionalities. More interesting, the intensity of its response is proportional to the size of the material. These features permit the sensor to be integrated into commercial textiles or a gas mask to accurately monitor a variety of important human activities including respiration, blowing, speaking and perspiration. Moreover, it also can distinguish different human physical conditions by recognizing respiration response patterns. The sandwich-like sensor can be readily integrated with textiles to fabricate promising smart electronics for human healthcare.
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