文献类型：期刊文献

英文题名：Laser Direct Writing of Flexible Large-Area Graphene Sheet for Electrical Impedance Tomography Based Multimode Sensing Purposes

作者：Gao, Yang[1,2];Dong, Fugui[1];Ju, Kuan[1];Li, Qi[1];Ling, Xiaofeng[3];Ma, Liang[4];Wang, Nan[3];Xiao, Biao[5];Ren, Facai[5]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai Key Lab Intelligent Sensing & Detect Tech, Shanghai 200237, Peoples R China;[2]Wuhan Text Univ, State Key Lab New Text Mat & Adv Proc Technol, Wuhan 430200, Hubei, Peoples R China;[3]East China Univ Sci & Technol, Sch Informat Sci & Engn, Shanghai 200237, Peoples R China;[4]Sichuan Univ, Coll Carbon Neutral Future Technol, Chengdu 610065, Sichuan, Peoples R China;[5]Shanghai Inst Special Equipment Inspection & Tech, Shanghai 200062, Peoples R China

年份：2024

卷号：24

期号：1

起止页码：750

外文期刊名：IEEE SENSORS JOURNAL

收录：;EI(收录号：20234815124503);WOS:【SCI-EXPANDED(收录号:WOS:001136951300101)】；

基金：No Statement Available

语种：英文

外文关键词：Electrical impedance tomography (EIT); flexible sensor; laser direct writing (LDW); pressure and temperature sensing

摘要：The high-performance electrical impedance tomography (EIT) based sensors rely on the formation of uniform and large-area conductive sensing layers in a highly efficient and scalable method. In this study, a laser direct writing (LDW) technology is studied to prepare a large-area graphene layer for EIT-based sensors of pressure and temperature measurements. Through the optimization of the LDW parameters, the generated graphene sheet on a polyimide (PI) substrate with a minimized electrical anisotropy of 1.68 has a sensitivity of 1.76 x 10(-4) kPa(-1) for applied pressure and a temperature coefficient of resistance (TCR) of -2.26 x 10(-4)degree celsius(-1). Besides, the EIT sensor demonstrates great potential for temperature and pressure sensing purposes, which can be employed to detect surface cracks and impact damage as well.