Highly Sensitive and Selective PbTiO Gas Sensors with Negligible Humidity Interference in Ambient Atmosphere.

Three PbTiO nanostructures were synthesized using a one-step hydrothermal reaction with different TiO powders as Ti sources, and their gas-sensing properties were investigated. The sensor comprising PbTiO nanoplates (NPs) exhibited a high response (resistance ratio = 80.4) to 5 ppm ethanol at 300 °C and could detect trace concentrations of ethanol down to 100 ppb.

Physical Properties of (NaK )NbO Thin Film Grown at Low Temperature Using Two-Dimensional CaNbO Nanosheet Seed Layer.

A monolayer CaNbO (CNO) nanosheet was deposited on a Pt/Ti/SiO/Si substrate using the Langmuir-Blodgett method. This monolayer CNO nanosheet with a (001) surface termination was used as a seed layer to reduce the growth temperature of the crystalline (NaK )NbO (NKN) film. The crystalline NKN film was preferentially grown along the [001] direction at 400 °C.