Advanced Institute of Engineering Science for Intelligent Manufacturing;
Guangzhou University;
Guangzhou 510006;
China;
School of Physics and Electronic Engineering;
Guangzhou University;
Guangzhou 510006;
China;
Faculty of Electrical Engineering and Computer Science;
Ningbo University;
Ningbo 315211;
China;
gas; sensor; 2D; nanomaterials; 2D/2D; nanocomposite; heterojunction; flexible; sensor;