文献类型：期刊文献

英文题名：High-performance wearable strain sensors based on fragmented carbonized melamine sponges for human motion detection

作者：Fang, Xiaoliang[1];Tan, Jianpin[1];Gao, Yang[1];Lu, Yongfeng[2];Xuan, Fuzhen[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[2]Univ Nebraska, Dept Elect & Comp Engn, Lincoln, NE 68588 USA

年份：2017

卷号：9

期号：45

起止页码：17948

外文期刊名：NANOSCALE

收录：;EI(收录号：20174804473492);WOS:【SCI-EXPANDED(收录号:WOS:000416825000038)】；

基金：This project was supported by the National Natural Science Foundation of China (Grant No. 51705154 and 51605164) and the Fundamental Research Funds for the Central Universities (Project No. 222201714014 and 222201714017), and was also sponsored by Shanghai Sailing Program 17YF1403300.

语种：英文

外文关键词：Strain - Wearable sensors - Tensile testing

摘要：Strain sensors with a large strain sensing range and high sensitivity are in high demand due to their various potential applications ranging from human motion detection to soft robotics. In this study, high-performance strain sensors are developed by fragmenting carbonized melamine sponges that are commercially available. The strain sensors, based on fragmented carbonized melamine sponges (FCMS), demonstrate high sensitivity with a gauge factor (GF) of 18.7 at an FCMS density of 1.07 mg cm(-2) and a large strain sensing range of up to 80%. As a comparison, the strain sensor based on unfragmented carbonized melamine sponges has only a GF of similar to 8.0 and limited stretchability (< 7%). In situ tension tests indicate that the strain-response mechanism of the sensor is mainly ascribed to the reorientation of individual FCMS at low strains (< 40%), while crack propagation dominates the strain-response behavior of the sensor at strains larger than 40%. The high sensitivity and large strain sensing range of the sensor, as well as the low-cost and scalable fabrication method, enable diverse applications. It can not only detect large-strain human arthrosis movements, but it also exhibits the capability to monitor subtle human physiological activity.