公开(公告)号：US20220128503A1

公开(公告)日：2022-04-28

申请号：US17197176

申请日：2021-03-10

申请人： National Tsing Hua University

发明人： Nyan-Hwa TAI ,  Chi-Young LEE ,  Ching CHANG ,  Cheng-Chieh LIN ,  Tien-Wang PENG ,  Yi-Han HSIAO ,  Kang-Cheng SU ,  Hsin-Kuo KO

IPC分类号： G01N27/12

摘要： A gas sensing device includes a substrate, a conductive unit, and a sensing layer. The conductive unit is disposed on the substrate, and includes two electrodes. The sensing layer is disposed on the conductive unit, and is electrically connected with the electrodes. The sensing layer adapted to absorb carbon dioxide includes polyethyleneimine and polyethylene glycol. A detecting system including a testing device, an analyzing device and the aforementioned gas sensing device is also disclosed. The gas sensing device is detachably mounted to and is electrically connected to the testing device. Electrical property of the gas sensing device 100 changes when the gas sensing device 100 absorbs carbon dioxide.