Gas sensor is an important branch of sensor technology, which has been widely used to detect various toxic, harmful, explosive, and volatile gases. In the industrial filed, the production process will produce toxic and harmful gases, which will not only seriously endanger human health, but also cause air pollution. Therefore, ultra-sensitive gas sensors are urgently needed to monitor harmful trace-level leakage gases. In the civilian filed, gas sensors can be widely used in detecting domestic formaldehyde, checking up alcohol driving, monitoring refrigerator food freshness, and other applications, leading to smart life. With the development of science and technology, the application fields of gas sensors have been widened. For example, gas sensors will have great development prospects in the field of noninvasive disease diagnosis through detecting the composition and concentration of exhaled breath. Typically, ammonia, acetone, and nitrogen dioxide can be used as characteristic exhaled markers of kidney disease, diabetes, and asthma, respectively. In addition, ultra-sensitive gas sensors can also be used in explosive detection and other military fields. Our group is devoted to the development of novel nanomaterials and fabrication of high sensitivity, high selectivity, and excellent long-term stability MEMS-based ultra sensitive gas sensors.
Development of novel sensitive nanomaterials
Fabrication of MEMS-based gas sensors
Development of gas sensor circuit system