A flexible and wearable NO_(2)gas detection and early warning device based on a spraying process and an interdigital electrode at room temperature
作者机构：State Key Laboratory for Mechanical Manufacturing Systems EngineeringXi'an Jiaotong University710049 Xi'anChina Chongqing Key Laboratory of Micro-Nano Systems and Intelligent SensingChongqing Academician WorkstationChongqing 2011 Collaborative Innovation Center of Micro/Nano Sensing and Intelligent Ecological Internet of ThingsChongqing Technology and Business University400067 ChongqingChina Department of MicrosystemsFaculty of TechnologyNatural Sciences and Maritime SciencesUniversity of South-Eastern Norway(USN)Raveien 2153184 BorreNorway
出 版 物：《Microsystems & Nanoengineering》 (微系统与纳米工程（英文）)
年 卷 期：2022年第8卷第2期
页 面：97-106页
核心收录：
学科分类：0821[工学-纺织科学与工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080202[工学-机械电子工程] 0837[工学-安全科学与工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程]
基 金：funded by the Natural Science Foundation of China(51805421 91748207 51805426 and 51720105016).
摘 要：Flexible sensors used to detect NO_(2) gas generally have problems such as poor repeatability,high operating temperature,poor selectivity,and small detection range.In this work,a new spraying platform with a simple structure,low cost,and good film-forming consistency was designed and built to make a sensitive film(rGO/SnO_(2))for NO_(2) gas sensors.The relationship between the solid content of rGO and SnO_(2)nanoparticles,annealing temperature,and sensor performance was studied.The results show that the interdigital electrode-sensitive film formed by spraying 0.25 ml of a 0.4 wt%rGO/SnO_(2)mixture and annealing at 250℃exhibited the best comprehensive performance for NO_(2) detection.The sensor s response value for 100 ppm NO_(2) gas was 0.2640 at room temperature(25℃),and the response time and recovery time were 412.4 s and 587.3 s,respectively.In the range of 20-100 ppm,the relationship between the response and NO_(2) concentration was linear,and the correlation coefficient was 0.9851.In addition,a soft-monitoring node module with an overlimit warning function for NO_(2) gas was designed and manufactured based on flexible electronics.Finally,the flexible sensor and node module were embedded into woven fabric that could be used to make a mask or a watch that could detect NO_(2) gas,realizing the practical application of flexible NO_(2) gas sensors in the field of wearable electronics.
维普期刊数据库