Abstract
Wearable and stretchable strain sensors have attracted much attention for their unique applications in monitoring human motion and health. However, state-of-the-art sensors lack sensing reliability on temperature and humidity changes at the wearable microinterface, leading to suboptimal sensing accuracy in body area sensing networks. For that, we design and fabricate a strain sensor using silk/polyurethane composite yarns with a core-sheath structure. The silk is modified using graphene with the assistance of 3-glycidyloxypropyl trimethoxy silane as coupling agent. The sensor exhibits fast response speed (i.e., 80 ms), high durability (>1500 cycles), remarkable linear sensing feature (R2 = 99.8 %) throughout the whole working range, and negative resistance response towards strain deformation. More importantly, the sensor performance will not be affected by temperature and humidity changes in typical use conditions. Testing is conducted and sensor responses in various body motions are also reported. In addition, a demonstration for the real-time body area sensing network using the fabricated sensor is provided. Experimental results from this study show that the fabricated strain sensor will have huge potentials for future personalized healthcare and public health management.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.