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Highly sensitive flexible strain sensor based on GSB-enhanced three-dimensional graphene composite
Yu, Chongsheng1,3; Sun, Tai2,3; Zhao, Bowei2; Zhang, Mengqin3; Gu, Mingxin1,3; Lin, Yuanchang2; He, Guotian2; Chen, Zongyong4; Liao, Tingmao4; Ran, Haofeng5
2022-06-01
摘要High-sensitive flexible strain sensor is a key device for artificial intelligence and wearable electronics. Specifically, the aim of this work is to investigate the design of graphene-SiO2 balls enhanced (GSB-enhanced) threedimensional (3D) graphene foam (GSBF) electrode structure, which is combined with flexible material polydimethylsiloxane (PDMS) for a highly sensitive strain sensor. The GSBF/PDMS strain sensor presents excellent performances: stretching ratio of 50%, response time of less than 128 ms and high sensitivity (the strain coefficient GF = 103, in variation range of 0-13% strain), due to its unique mechanical and conductive properties. Moreover, a high stability of more than 300 loading-unloading cycles is achieved without dramatic resistance increment. Our sensors could be used in several wearable applications including monitoring finger movement, the pulse ratio, the strain of the knee joint in patellar reflex and the movements of elbow, wrist, sole etc. Our research illustrates the potential abilities in the fields of robotic systems, healthcare and flexible electronics applications with less cost and more accessible.
关键词Graphene Three-dimensional structure Strain sensor
DOI10.1016/j.physe.2022.115187
发表期刊PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
ISSN1386-9477
卷号140页码:8
通讯作者Sun, Tai(suntai@cigit.ac.cn) ; Wei, Dapeng(dpwei@cigit.ac.cn)
收录类别SCI
WOS记录号WOS:000787859600006
语种英语