Flexible and wearable strain sensor based on electrospun carbon sponge/polydimethylsiloxane composite for human motion detection. Issue 7 (20th January 2021)

• Record Type: Journal Article
• Authors: Gong, He; Cai, Chuan; Gu, Hongjun; Jiang, Qiushi; Zhang, Daming; Cheng, Zhiqiang
• Is Part Of: RSC advances. Volume 11:Issue 7(2021)
• Page Start: 4186
• Page End: 4193
• Publication Date: 2021-01-20
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d0ra09070k
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Electrospun carbon sponge was used to measure tensile strains with a high gauge factor. Abstract : Flexible and wearable strain sensors have attracted considerable attention due to their potential applications in human motion detection. In this work, the as-fabricated strain sensor was obtained by encapsulation of electrospun carbon sponge (CS) with polydimethylsiloxane (PDMS). The formation mechanism of the self-assembled sponge has been explored. Meanwhile, the piezoresistive properties and the strain sensing mechanism of the CS/PDMS sensor were investigated. The results showed that the as-fabricated CS/PDMS sensor had high piezoresistive sensibility with a maximum gauge factor up to 130.49, superior stability and fast response to various cyclic loading with a tensile strain from 0% up to 40% and a tensile speed range of 2–18 mm min −1 . Finally, all the superior performances endow the sensor with abilities to precisely detect pronunciation, human palm motion, wrist joint motion, elbow joint motion, and finger motion in real-time. These results indicate that the strain sensor based on the CS/PDMS could have promising applications in flexible and wearable devices for human motion detection.