文献类型：期刊文献

英文题名：All laser direct writing process for temperature sensor based on graphene and silver

作者：Li, Qi[1];Bai, Ruijie[2];Guo, Lianbo[3];Gao, Yang[1,3]

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]North Automat Control Technol Inst, Taiyuan 030006, Peoples R China;[3]Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China

年份：2024

卷号：17

期号：1

外文期刊名：FRONTIERS OF OPTOELECTRONICS

收录：EI(收录号：20240615522394);WOS:【ESCI(收录号:WOS:001156060800001)】；

基金：This work was supported by the National Natural Science Foundation of China (Grant Nos. 52205154 and 52275146), the Shanghai Super Postdoctoral Incentive Plan (No. 2022160), China Postdoctoral Science Foundation (No. 2022M721139), and the Open Project Program of Wuhan National Laboratory for Optoelectronics (No. 2020WNLOKF007).

语种：英文

外文关键词：Laser direct writing; Temperature sensor; Finite element analysis; Laser induced graphene; Laser induced silver

摘要：A highly sensitive temperature sensing array is prepared by all laser direct writing (LDW) method, using laser induced silver (LIS) as electrodes and laser induced graphene (LIG) as temperature sensing layer. A finite element analysis (FEA) photothermal model incorporating a phase transition mechanism is developed to investigate the relationship between laser parameters and LIG properties, providing guidance for laser processing parameters selection with laser power of 1-5 W and laser scanning speed (greater than 50 mm/s). The deviation of simulation and experimental data for widths and thickness of LIG are less than 5% and 9%, respectively. The electrical properties and temperature responsiveness of LIG are also studied. By changing the laser process parameters, the thickness of the LIG ablation grooves can be in the range of 30-120 mu m and the resistivity of LIG can be regulated within the range of 0.031-67.2 omega center dot m. The percentage temperature coefficient of resistance (TCR) is calculated as - 0.58%/degrees C. Furthermore, the FEA photothermal model is studied through experiments and simulations data regarding LIS, and the average deviation between experiment and simulation is less than 5%. The LIS sensing samples have a thickness of about 14 mu m, an electrical resistivity of 0.0001-100 omega center dot m is insensitive to temperature and pressure stimuli. Moreover, for a LIS-LIG based temperature sensing array, a correction factor is introduced to compensate for the LIG temperature sensing being disturbed by pressure stimuli, the temperature measurement difference is decreased from 11.2 to 2.6 degrees C, indicating good accuracy for temperature measurement.