Laser-upgraded coal tar for smart pavements in road and bridge monitoring applications  

作　　者：Jincai Huang Man Zhang Haoyun He Qingang Li Yixin Zhao Qiulin Tan Xining Zang 

机构地区：[1]Department of Mechanical Engineering,Tsinghua University,Beijing,100084,China [2]State Key Laboratory of Clean and Efficient Turbomachinery Power Equipment,Department of Mechanical Engineering,Tsinghua University,Beijing,100084,China [3]Key Laboratory for Advanced Materials Processing Technology,Ministry of Education,Beijing,100084,China [4]Science and Technology on Electronic Test and Measurement Laboratory,North University of China,Taiyuan,030051,China [5]School of Energy and Mining Engineering,China University of Mining and Technology(Beijing),Beijing,100083,China

出　　处：《Microsystems & Nanoengineering》2024年第2期231-239,共9页微系统与纳米工程（英文）

基　　金：supported by the National Key Research and Development Program of China(number 2022YFB4100900);the National Natural Science Foundation of China(number 52105459);the Tsinghua University Initiative Scientific Research Program;the Tsinghua University Start-up Funding.

摘　　要：The implementation of an intelligent road network system requires many sensors for acquiring data from roads,bridges,and vehicles,thereby enabling comprehensive monitoring and regulation of road networks.Given this large number of required sensors,the sensors must be cost-effective,dependable,and environmentally friendly.Here,we show a laser upgrading strategy for coal tar,a low-value byproduct of coal distillation,to manufacture flexible strain-gauge sensors with maximum gauge factors of 15.20 and 254.17 for tension and compression respectively.Furthermore,we completely designed the supporting processes of sensor placement,data acquisition,processing,wireless communication,and information decoding to demonstrate the application of our sensors in traffic and bridge vibration monitoring.Our novel strategy of using lasers to upgrade coal tar for use as a sensor not only achieves the goal of turning waste into a resource but also provides an approach to satisfy large-scale application requirements for enabling intelligent road networks.

关 键 词：GAUGE BRIDGE SMART 

分 类 号：TN24[电子电信—物理电子学]