Abstract
Flexible pressure sensors have been widely studied due to their potential applications in wearable electronics. However, the poor sensitivity and narrow working range seriously hinder their developments in practical applications. This article reports a flexible pressure sensor characterizing with modulus gradient and multilayered microstructure. The sensor has an ultrahigh sensitivity of 29.69 kPa<sub>−1</sub> due to the gradient structure formed by low modulus Ag/hydrogenated styrene-butadiene block copolymer (SEBS) electrode layer and high modulus graphene (GR)/carbon nanotubes (CNTs)/polycaprolactone (PCL) composite with surface microstructure. The sensor has an ultrawide measurement range of 0–500 kPa due to its multilayered structure. In addition, the sensor has good linearity (4.85%) and repeatability (2.18%), rapid response time (50 and 30 ms), low detection limit (30 Pa), and long-term durability (1000 cycles). Experimental results suggest that the sensor can be used for effective detection of mechanical vibrations, pulse, and human motions and can also be used for measuring spatial pressure distribution after being arrayed. These applications indicate its great potential in wearable medical devices and electronic skins.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
