In order to enable the students to better understand the forefront of international research and stimulate students' interest in scientific research,and based on large amount of research work,a comprehensive experiment on preparation of MoS_2/Si heterogeneous thin film,microstructure characterization and gas sensing property measurement is designed.This experiment has a novel topic and covers the wealth of knowledge.All the steps for the experiment are connected closely and it is helpful to deepen the stude...