Animals have an excellent sense of smell because they have more olfactory cells than humans. In particular, dogs with great olfactory ability have 1000 times more olfactory receptor cells and 6-50 times larger area of epithelial cells than humans. Lik...
Animals have an excellent sense of smell because they have more olfactory cells than humans. In particular, dogs with great olfactory ability have 1000 times more olfactory receptor cells and 6-50 times larger area of epithelial cells than humans. Likewise, in gas sensors, the ability to detect gas is improved through nanostructures and porous structures. Unlike olfactory cells, ceramic gas sensors that measure gas by reacting with oxygen on the surface have errors depending on the environment and the gas selectivity. Previous studies have shown selectivity for gases by controlling the operating temperature of the gas sensor. However, humidity interferes with the signal to other gases by bonding with oxygen on the surface. In our study, we design a nanoporous ceramic gas sensor that has stable signals even in a humid environment.