Recently, Guo Zheng, an associate researcher at the Nanomaterials and Environmental Testing Laboratory of Hefei Institute of Intelligent Machinery, Chinese Academy of Sciences, has successfully fabricated high sensitivity and high stability Nanometer gas sensor. Relevant research results were published by Nanotechnology (2016, 27, 355702) and ACS Sensors (DOI: 10.1021 / acssensors.6b00597) respectively. In recent years, the rise of nanotechnology has brought new opportunities for the development of sensors, especially nanostructured materials, which have large active surface area and can effectively improve the sensitivity of the sensor. However, how to construct a nano sensitive interface that is easy to gas diffusion and develop a highly sensitive and highly stable nano gas sensing device is still a difficult point in current sensor research. In response to the above problems, the researchers first of the sensitive material zinc oxide as the research object, designed and synthesized its porous single crystal nanoribbons. Using the method of calcining the precursor and combining the self-assembly technology of L-B film, a uniform thin-walled porous single crystal zinc oxide nanobelt-sensitive film was successfully constructed. Gas sensitivities studies have shown that a highly sensitive and highly stable sensitive response to volatile organic contaminants has been successfully achieved based on the synergistic effect of thin, porous, and single crystal nanostructures. After the research was published, Nanotechweb. Labtalk News, org's official website, also reports on Porous and single crystalline nanobelts for promising sensing nanomaterials. In addition, the researchers also designed and synthesized three-dimensional nano-scale tin oxide hierarchical structure, and by regulating the morphology of graded nanostructures to achieve its optimization of gas sensitivity. Based on the microstructural characterization analysis, it was found that the nanostructures with a large number of surface defects and dislocations show the best sensitivity, revealing the inherent relationship between the evolution of nanostructured morphologies and their sensitivity. Nanosized gas sensors are constructed to exhibit high sensitivity to typical volatile organic compounds (VOCs) (up to ppb for the detection of acetone), as well as good stability and reproducibility (after 4 months, detection The maximum sensitivity decline of only 15%). The progress of the above research has important guiding significance for the design and development of high-performance nano-gas sensor. The research work has received the support of the National Major Scientific Research Program of nano-special, the National Natural Science Foundation of China and other projects. â–² Construction and Characterization of Porous ZnO Single Crystal Zinc Oxide Gas Sensor (Top Left), Labtalk News (Right), Evolution and Sensitivity of Three-Dimensional Tin Oxide Nanometer Hierarchy (Bottom Left)