The stretchable carbon black-based strain fiber with a remarkable linearity in a wide sensing range  

作　　者：Hao Wang Yang Yue Wenze Zou Yang Pan Xiaogang Guo 

机构地区：[1]Institute of Advanced Structure Technology,Beijing Institute of Technology,Beijing,Hebei,China [2]School of Computer Science and Engineering,Nanjing University of Science and Technology,Nanjing,Jiangsu,China [3]Xuteli School,Beijing Institute of Technology,Beijing,Hebei,China

出　　处：《International Journal of Smart and Nano Materials》2022年第3期529-541,共13页国际智能和纳米材料杂志（英文）

基　　金：This work was supported by the National Natural Science Foundation of China[12072030].

摘　　要：Ascribed to its wide sensing range,high sensitivity,and low stiff-ness to match target objects with complex 3D shapes,the stretch-able strain sensor has shown its promising applications in various fields,ranging from healthcare,bodynet,and intelligent traffic system,to the robotic system.This paper presents a low-cost and straightforward fabrication technology for the stretchable strain fiber with the combined attributes of a wide sensing range,excep-tional linearity,and high durability.The hybrid composite consist-ing of carbon black and silicone is utilized as the functional material to respond to the external mechanical deformation due to the piezoresistive effect.To address the remarkable hysteresis of the CB-silicone composites,the latex tubes with excellent mechanical robustness and a considerable accessible tensile strain are intro-duced as the outer supporting components.After injecting the conductive CB-silicone composite into these tubes,the stretchable strain fibers are successfully prepared.Notably,the stretchable strain sensor exhibits linearity(R^(2)=0.9854)in a wide sensing range(0-400%)and remarkable durability even after the 2500 cycles under 100%tension.Additionally,the potential of this stretchable strain fiber as the wearable strain sensor and the realtime feedback is demonstrated by detecting the body motion and the expansion devices.

关 键 词：Soft and stretchable strain sensor high linearity wide sensing range wearable electronics 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]