New Technology Promotes Performance Optimization of Thin Film Sensors in Chinese Academy of Sciences

In recent years, chemical resistance sensors based on one-dimensional nanostructures (such as nanowires and nanotubes) have become ideal for explosive atmosphere detection because of their high detection sensitivity and fast response speed. material. According to the different structure of the sensitive layer of the one-dimensional nanostructure sensor, it can be divided into film-based sensors and single nanostructure-based sensors. The single nanostructure-based sensor has the advantages of small size, high detection sensitivity, low power consumption, etc. However, it has the problems of complicated preparation process, low stability, and poor repeatability. The film-based sensor has a simple preparation process, high stability and good repeatability, and is easier to be prepared on a large scale and industrialized applications. However, due to the tendency for a one-dimensional nanostructure to be agglomerated, the advantage of a large specific surface area cannot be fully exerted, thereby resulting in Thin-film sensors have lower detection sensitivity. Therefore, how to balance the advantages of the above two sensitive layer structures, which not only simplifies the preparation process, increases the stability, but also maintains a high detection sensitivity and a fast response speed, has become a challenging research topic in the field of explosive atmosphere detection.