Smart City Research Center;
School of Automation;
Hangzhou Dianzi University;
Hangzhou 310018;
China;
Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology;
College of Chemical and Biological Engineering;
Zhejiang University;
Hangzhou 310027;
China;
α-Fe2O3; ethanol; sensor; chemi-resistive; in; realistic; environment; micro-electro-mechanical; systems(MEMS);