Carbonization fabrication of a piezoresistive sensor with improved sensitivity via Ni decoration of carbonized cotton fibers

作     者：HE Xiang WANG FengMing LIANG YiYing WU JiaWei LIANG JiongHong SHEN GengZhe LI BaiJun SU DaoJian ZHANG Chi SONG WeiDong HE Xin 

作者机构：School of Applied Physics and MaterialsWuyi UniversityJiangmen 529020China School of Materials and EnergyGuangdong University of TechnologyGuangzhou 510006China 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2022年第65卷第12期

页      面：3000-3009页

核心收录：

学科分类：0810[工学-信息与通信工程] 0821[工学-纺织科学与工程] 08[工学] 080202[工学-机械电子工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 082102[工学-纺织材料与纺织品设计] 0802[工学-机械工程] 0702[理学-物理学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：supported by the Natural Science Foundation of Guangdong Province(Grant No.2021A1515010691) College Innovation Team Project of Guangdong Province(Grant No.2021KCXTD042) Major Program of Basic Research and Applied Research of Guangdong Province(Grant No.2019KZDXM051) Wuyi University-Hong Kong-Macao Joint Research and Development Fund(Grant No.2019WGALH06) 

主　　题：carbonized cotton fabric Ni nanoparticles flexible piezoresistive sensor wearable device 

摘      要：The development of wearable electronics urgently requires the cost-effective and scalable fabrication of high-performance pressure *** work aims to develop a simple carbonization strategy to facilitate sensor sensitivity by decorating discrete nickel nanoparticles on carbonized cotton fibers(CCFs).The increased air gap between the fibers at the unloading state,as well as the enlargement of the deformation distance and the contact area between the conductive materials at the loading state,contribute to a more significant resistance ***,the sensitivity of the piezoresistive sensor is improved more than 5 times within 1 N by introducing Ni nanoparticles,and it is characterized by a rapid response(~160 ms)and recovery(~100 ms),wide detection range(~20 N/~130 kPa),and good durability(~4000 cycles).The flexible sensor has been successfully demonstrated to monitor human movements,physical stimuli,and pressure ***,the proposed device can control temperature accurately as a uniform and large-scale *** work reveals that the Ni@CCFs-based sensor is prospective in wearable electronics,artificial intelligence,health monitoring,medical diagnosis and treatment.