Journal
RSC ADVANCES
Volume 8, Issue 2, Pages 1078-1082Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ra10474j
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Funding
- National Natural Science Foundation of China [11604173, 51673103, 51373082]
- Natural Science Foundation of Shandong Province, China [BS2015CL013]
- Taishan Scholars Program of Shandong Province, China [ts20120528]
- Key Research and Development Plan of Shandong Province, China [2016GGX102011]
- Program of Science and Technology in Qingdao City [15-9-1-112-jch]
- Project of Shandong Province Higher Educational Science and Technology Program [J16LJ07]
- China Postdoctoral Science Foundation [2017M612195]
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Stretchable sensors, as the important components of flexible electronic devices, have achieved progress in a variety of applications for monitoring physical or environmental conditions, such as sound, temperature, vibration, and pressure. However, it still remains a challenge to fabricate high performance stretchable humidity sensors. Herein, we present a novel stretchable humidity sensor, which was fabricated based on an ultrastretchable polyaniline composite fiber. Because of the composite fiber with a twining spring configuration (cotton fibers twining spirally around a polyurethane fiber) it maintains a stable electrical conductivity up to a strain of 200%. In addition, the conductivity of the composite fiber remains perfectly stable after 5000 cyclic stretching events of 200% strain. Incorporating the humidity sensitive properties of nanostructured polyaniline, the stretchable humidity sensor based on the composite fiber effectively maintains its humidity sensitivity at different elongations.
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